| Entries |
| Document | Title | Date |
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| 20080225452 | Advanced Feeder Architecture With Automated Power Restoration - A method and apparatus for restoring power to loads connected to a feeder powered by a power source. The feeder is provided with a plurality of switching devices and a master electronic device which is in operative communication with the switching devices and has a plurality of power restoration plans stored therein. Upon occurrence of a fault in a zone of the feeder, the identity of the switching device which is closest to and upstream from the faulted zone relative to the power source is used in order to select a power restoration plan and restore power to some or all the loads connected to non-faulted zones of the feeder from one or more additional feeders. | 09-18-2008 |
| 20080253048 | Protection circuit and electronic device - A protection circuit has: a microcomputer that, on receiving a signal indicating that a power supply circuit connected to it is in an abnormal state, transmits a first protection signal to thereby bring the power supply circuit into a protected state; and a microcomputer protector that, on receiving a signal indicating that the microcomputer is in a no-operation-clock state, transmits a second protection signal to thereby bring the power supply circuit into a protected state. | 10-16-2008 |
| 20080310062 | MICRO-ELECTROMECHANICAL SYSTEM BASED SELECTIVELY COORDINATED PROTECTION SYSTEMS AND METHODS FOR ELECTRICAL DISTRIBUTION - Electrical distribution systems implementing micro-electromechanical system based switching devices. Exemplary embodiments include a method in an electrical distribution system, the method including determining if there is a fault condition in a branch of the electrical distribution system, the branch having a plurality of micro electromechanical system (MEMS) switches, re-closing a MEMS switch of the plurality of MEMS switches, which is furthest upstream in the branch and determining if the fault condition is still present. Exemplary embodiments include an electrical distribution system, including an input port for receiving a source of power, a main distribution bus electrically coupled to the input port, a service disconnect MEMS switch disposed between and coupled to the input port and the main distribution bus and a plurality of electrical distribution branches electrically coupled to the main distribution bus. | 12-18-2008 |
| 20090316317 | Power plate for driving at least one robot - A power plate for driving a robot is provided herein. The power plate is capable of driving the robot in a stable manner. This stable drive of the robot is achieved by preventing a whole system paralysis phenomenon, which is caused by a local short-circuit occurring in a certain part of the power plate. The whole system paralysis is prevented by selectively breaking power supplied to a power supply pattern in association with the part where the short-circuit occurs. | 12-24-2009 |
| 20100142108 | NETWORK UNIT INCLUDING NETWORK TRANSFORMER AND NETWORK PROTECTOR - A network unit includes an enclosure having first and second compartments, plural input terminals, and a primary switch having an input and an output, the input being electrically connected to the input terminals. The output of the primary switch is electrically connected to the input of a network transformer. A network protector includes an input, an output and a circuit breaker electrically connected between the input and the output of the network protector. The network protector input is electrically connected to the network transformer output. Plural circuit protection devices are electrically connected between the network protector output and plural output terminals. The circuit breaker is substantially enclosed by the second compartment. The network transformer, the primary switch and part of the network protector are enclosed by the first compartment. | 06-10-2010 |
| 20100149708 | INTEGRATED ELECTRIC POWER DISTRIBUTION CENTER FIRE PROTECTION SYSTEM - An electrical distribution control system for a vehicle such as an aircraft may be provided fire-suppression protection without requiring that all control elements are located in a fire-containment enclosure. A primary electric load center (ECL) may be located in a fire-containment equipment bay. Secondary power control centers (SPC's) may be located away from the equipment bay and close to set of loads which are controlled by the SPC's. Each SPC may be provided with a fire detecting sensor that may signal the ECL to interrupt input power to the SPC in the event of a fire in the SPC. The SPC may be constructed from self-extinguishing material. In an absence of input power to the SPC, a fire may self extinguish, thus preventing flame propagation or production of excessive external heat. | 06-17-2010 |
| 20100259859 | METHOD OF ENSURING THE COORDINATED ARC FAULT PROTECTION IN A HEIRARCHIAL POWER DISTRIBUTION SYSTEM - A coordinated arc fault protection scheme in a hierarchical power distribution system is disclosed. The methods according to embodiments of the present invention may be considered an “event and time graded” analysis. In event and time based analysis, the number of confirmed arc signature may be monitored with respect to time in the main feeder line as well as the branched feeders. The confirmed arc signature in the branched feeder, as well as in the main feeder, may be captured and time stamped. A trip command may be issued first in the intended branched feeder if the branched feeder experiences a minimum number of events within a given time. During the same time period, the main feeder also monitors similar arcing events. If the tripping of the branched feeder occurs and the main feeder still detects arcing events, the main feeder may be tripped after a certain period of time or a certain number of confirmed arc signature. If there is no arc in the branched feeder and the main feeder itself experiences the arc, then the main feeder may be tripped after a predetermined period of time so that the current to all the branched feeders may be cut and the main feeder may be protected. | 10-14-2010 |
| 20110096448 | Apparatus and method for protecting an electric line - The present invention relates to an apparatus and a method for protecting an electric line in a vehicle, it being possible to adapt the apparatus to the properties of the electric line to be protected. The apparatus for protecting an electric line comprises an electric fuse and a controllable switching element, the controllable switching element and the electric fuse being formed as a parallel circuit, and the parallel circuit being connectable in series to the electric line, the electric fuse being disposed in a first branch of the parallel circuit, which has a first resistance, and the controllable switching element being disposed in a second branch of the parallel circuit, and the controllable switching element being configured to accommodate at least two states, a first state with a second resistance higher than the first resistance, and a second state with a third resistance lower than the first resistance, and to switch into the second state when there is a pulse load condition. | 04-28-2011 |
| 20110149453 | FAULT CIRCUIT INTERRUPTER DEVICE - In one embodiment, there is a fault interrupter device comprising at least one sensor comprising at least one first transformer having at least one outer region forming an outer periphery and at least one inner hollow region. There is also at least one second transformer that is disposed in the inner hollow region of the at least one first transformer. The transformers can be substantially circular in configuration, and more particularly, ring shaped. In another embodiment there is a rotatable latch which is used to selectively connect and disconnect a set of separable contacts to selectively disconnect power from the line side to the load side. The rotatable latch is in one embodiment coupled to a reset button. In at least one embodiment there is a slider which is configured to selectively prevent the manual tripping of the device. | 06-23-2011 |
| 20110170219 | Islanded Power System with Distributed Power Supply - An islanded power system with a distributed power supply includes a system abnormality detection unit, which outputs an abnormality detection signal when an abnormality in a commercial system is detected; a breaker, which interrupts a supply of power from the commercial system when the abnormality detection signal is input from the system abnormality detection unit; a status detection unit, which outputs a breaker status signal when the breaker's open state is detected; and an electrical storage device, which compensates a fluctuation in load until a rotating machine generator switches to an islanded operation after the supply of power from the commercial system is interrupted by the breaker by starting the supply of power when the breaker status signal is input. | 07-14-2011 |
| 20110205677 | SWITCH-ON PROTECTION DEVICE FOR AN ELECTRICAL DEVICE THAT CAN BE OPERATED ON A SUPPLY VOLTAGE - The invention relates to a switch-on protection device ( | 08-25-2011 |
| 20110235224 | SEMICONDUCTOR INTEGRATED CIRCUIT - A circuit device connected between a neighboring pair of terminals in a semiconductor integrated circuit is protected from electrostatic damage due to a surge voltage when the surge voltage is applied between the neighboring pair of terminals. The semiconductor integrated circuit is formed to include terminals P | 09-29-2011 |
| 20120033338 | MONITORING DEVICE FOR AN ELECTRICAL POWER SOURCE AND LOAD - Disclosed is a device for monitoring an electrical power flow between a power source and a load. The monitoring device includes a monitoring module configured to monitor one or more aspects of the electrical power flow, the monitoring module configured to detect a fault condition when one or more aspects fall outside a predetermined operating range. In addition, the device includes a protection module configured to interrupt the electrical power flow upon detection of the fault condition. In some embodiments, the monitoring device includes a reset module configured to re-establish electrical power flow between the power source and the load. In some embodiments, the monitoring device further includes a diagnostic module configured to determine diagnostic information based at least in part on one or more of the monitored aspects of the electrical power flow. | 02-09-2012 |
| 20120039006 | Compressor Protection And Grid Fault Detection Device - A compressor monitoring system includes current and voltage monitors, current and voltage averaging modules, a control module, and a switch. The current monitor measures a current drawn by a motor of a compressor. The current averaging module generates first and second average current values based on the current measured by the current monitor. The voltage monitor measures a utility power voltage. The voltage averaging module generates first and second average voltage values based on the voltage measured by the voltage monitor. The control module selectively generates a fault signal when a first ratio is greater than a first predetermined threshold and a second ratio is less than a second predetermined threshold. The first ratio is based on the first and second average current values. The second ratio is based on the first and second average voltage values. The switch deactivates the motor when the fault signal is generated. | 02-16-2012 |
| 20120063044 | DISCHARGE DEVICE FOR VEHICLE - A discharge device for a vehicle includes a discharging circuit that connects a second capacitor and a discharging resistor in parallel through activation of a forced connection device. When a collision of the vehicle is detected, the discharge device forcibly stops electricity supply from the storage battery to the electric circuit including the second capacitor, and activates the forced connection device to forcibly discharge the second capacitor. A pair of connecting terminals of the forced connection device are arranged to be pressed against each other with an insulating member disposed therebetween. The forced connection device includes a gas generator for generating combustion gas directed to the insulating member. When an abnormality is detected, the forced connection device short-circuits the connecting terminals with each other through activation of the gas generator. The second capacitor and the discharge device are provided integrally. | 03-15-2012 |
| 20120140367 | PROTECTION LOCKOUT IN SUBSTATION AUTOMATION - Exemplary embodiments are directed to engineering of protection lockout functionality in a Substation Automation (SA) system. The system includes a breaker IED having protection-zone related intelligence in a lockout function block lockout function instances are assigned to respective protection zones, and are specified for each protection function which protection-zone(s) it shall trip and reset after lockout. Hence for switch yard configurations and power networks where a protection function trips multiple breakers by using several bay control or protection devices a more efficient implementation of lockout functionality is possible. | 06-07-2012 |
| 20120140368 | Hardware Overvoltage Disconnecting Circuit - A hardware overvoltage disconnecting circuit wherein a DC power supply module is disconnected from a power network when the AC power network is in the state of overvoltage. The circuit includes a disconnecting relay and a voltage detection circuit. The disconnecting relay is connected in series between an AC power network and a power factor correction circuit of a power supply module. A first sampling terminal of the voltage detection circuit samples the voltage of the AC power network between the AC power network and the disconnecting relay, and an output of the voltage detection circuit is connected to a control terminal of the disconnecting relay. When the AC power network is in the state of overvoltage, the disconnecting relay is disconnected and the power supply module is disconnected from the AC power network. When the voltage of the AC power network is normal, the disconnecting relay is connected. | 06-07-2012 |
| 20120154967 | SYSTEM FOR MONITORING OVER VOLTAGE PROTECTION OF BATTERY PACK AND METHOD THEREOF - An over voltage protection (OVP) monitoring system and a method thereof. The OVP monitoring system includes a battery pack connected to an external system, the battery pack including a battery, a first memory to store a voltage value of the battery, a second memory comprising a first sub-memory and a second sub-memory to store numbers of OVP operations of the battery, a controller to store the voltage value of the battery in the first memory upon an occurrence of an OVP operation and to increment a number of OVP operations stored in either the first sub-memory or the second sub-memory according to the voltage value of the battery stored in the first memory and a signal generator to generate either a first alarm signal or a second alarm signal based on the contents of the first and second sub-memories. | 06-21-2012 |
| 20120182655 | Methods and Systems Involving Monitoring Circuit Connectivity - A circuit protection system includes a first current sensing device operative to measure a current of a first phase of a voltage source, a second current sensing device operative to measure a current of a second phase of a voltage source, and a logic portion communicatively connected to the first current sensing device and the second current sensing device, the logic portion operative to receive measured currents from the first current sensing device and the second current sensing device, determine whether the measured current of the first phase is less than a threshold current value during a time period, and output an indication that a short exists in the first phase of the voltage source responsive to determining that the measured current of the first phase is not less than the threshold current value during the time period. | 07-19-2012 |
| 20120194954 | CONDUCTION BREAKING DEVICE - A conduction breaking device includes a movable member accommodated in an accommodation chamber of a case. A cutter portion projects from an advancing side of the movable member in the moving direction. A gas generator is arranged on the trailing side of the movable member in the moving direction. A conduction member extends to connect a pair of external connection portions and includes a pair of base portions and a breakable portion. The base portions are located in the side wall of the case and extend along the moving direction of the movable member. The breakable portion is shaped to connect the base portions to each other and to block the advancing side of the movable member in the moving direction. Step portions are formed in the breakable portion. Engaging portions that are engageable with the step portions are formed in the case. | 08-02-2012 |
| 20120200966 | PROTECTION SYSTEM FOR AN ELECTRICAL POWER NETWORK - A protection system is provided for an electrical power network. The system has one or more circuit breaker arrangements which on activation isolate electrical faults within the network, and one or more fault detectors. The or each fault detector measures an inductance of a respective section of the network. The system is configured to activate one or more of the circuit breaker arrangements in response to measured inductances which are indicative of a fault. | 08-09-2012 |
| 20120229943 | DEVICE FOR DETECTING A FAULT IN AN AC SUPPLY - A device for detecting a fault in an AC supply comprises a circuit (CT, | 09-13-2012 |
| 20120236451 | ELECTRICITY STORAGE SYSTEM AND CONTROL DEVICE - There is provided an electricity storage system which comprises an electricity storage device, a charge and discharge switch device which is placed connected to the electricity storage device, a control block which is a charge and discharge control device which controls charging from a power supply and discharging from the electricity storage device to an external load, and an electricity storage device breaker with transmission and reception functions which is provided between the electricity storage device and the charge and discharge switch device, disconnects connection with the electricity storage device according to detection of abnormality of the electricity storage device or according to an instruction of the control block, and notifies the execution of the disconnection to the control block. The control block comprises a hardware disconnection instruction unit in addition to a software disconnection instruction unit. | 09-20-2012 |
| 20120243135 | DEACTIVATION DEVICE FOR DISCONNECTING AN ELECTRICAL ENERGY SOURCE FROM A LOAD, AND CIRCUIT SYSTEM HAVING A DEACTIVATION DEVICE - A deactivation device for disconnecting an electrical energy source from a load includes at least two one-time switches. The one-time switches become inoperative upon switching in response to the presence of a load exceeding a critical value, thereby disconnecting an electrical connection. The one time switches are connected in parallel, and the deactivation device is configured in such a way that, except for a one-time switch, which is provided for disconnecting the energy source from the load and for connecting the energy source to the load, the at least one other one-time switch remains open. In the case of an inoperativeness of the one one-time switch, the at least one other one-time switch is used for disconnecting the energy source from the load and for connecting the energy source to the load. | 09-27-2012 |
| 20120327541 | DIGITAL PROTECTION RELAY AND OPERATION METHOD THEREOF - The present disclosure relates to a digital protection relay and an operation method of the digital protection relay for enhancing the operation of a frequency change rate relay element (81R) thereof, and the digital protection relay and an operation method thereof may calculate a plurality of different frequency change rates from the measured frequency and use a value of the frequency change rate selected based on a predetermined criteria in the control of a relay operation, thereby providing an effect of enhancing reliability for the operation of the frequency change rate relay element. | 12-27-2012 |
| 20130003237 | HIGH VOLTAGE INTERLOCK CIRCUIT UTILIZING SERIAL COMMUNICATIONS - The system provides for controlling the connection of electrical power sources to electrical loads installed on a motor vehicle and limiting exposure of personnel to relatively high electrical voltages from the electrical power sources. The system includes a serial communication bus and power cables routed through the motor vehicle. At least a first connector is provided through which the serial communication bus and a power cable are routed allowing temporary severing of the serial communication bus and the power cable. The power cable includes a circuit interrupter which isolates the connector from the electrical power source in response to certain conditions on the serial communication bus, including, but not limited to, the cessation of data traffic on the serial communication bus. | 01-03-2013 |
| 20130050888 | HIGH VOLTAGE DC SWITCHYARD WITH SEMICONDUCTOR SWITCHES - A high voltage DC switchyard comprises at least one busbar, at lest two DC lines connected to said at least one busbar through DC breakers comprising a section of at least one semiconductor device of turn-off type and rectifying member in anti-parallel therewith. At least one said DC line is connected to at least one said busbar through a unidirectional said DC breaker, i.e. a DC breaker that may only block current therethrough in one direction. | 02-28-2013 |
| 20130120887 | PROTECTION DEVICE FOR LITHIUM BATTERY ASSEMBLY - A protection device for battery assembly includes a battery unit having multiple secondary Lithium batteries and the battery unit is electrically connected with a detection-control unit which is electrically connected to a by-pass which is a charge/discharge circuit. The detection-control unit has a voltage detection circuit and a micro controller unit to detect output voltage of the battery unit. A receiving device is electrically connected to the detection-control unit to receive wireless signals from a remote controller. The receiving device transmits signals to the detection-control unit. An emitting device is electrically connected to the detection-control unit to send signals to the remote controller when the battery unit has abnormal voltages. The battery unit is monitored and controlled by the detection-control device. | 05-16-2013 |
| 20130128403 | DELAY PROTECTION CIRCUIT AND ELECTRONIC DEVICE EMPLOYING THE SAME - A delay protection circuit is installed between a power supply unit and a load of an electronic device, and includes a first capacitor and second capacitors. The delay protection circuit allows the supply of electric power to the load by the PSU, and detects power being output by the PSU. If the power output by the PSU exceeds a rated power of the load, the first capacitor becomes chargeable by the PSU, and the load is electrically disconnected from the PSU once a voltage on the first capacitor achieves a predetermined voltage level. The second capacitors are also available for charging by the PSU according to a difference between the power being output by the PSU and the rated power of the load to provide automatic adjustability of a delay time for the voltage on the first capacitor to achieve the predetermined voltage. | 05-23-2013 |
| 20130148245 | LINE ISOLATORS FOR ISOLATING MULTIPLE FAULTS IN EMERGENCY SYSTEMS - A system for isolating faults in emergency systems, the system including first and second power lines, and one or more zones. Each zone has first and second zone line isolators, the first zone line isolator is connected between the first power line and the respective zone, and the second line isolator is connected between the second power line and the respective zone. Each first line isolator is configured to disconnect the zone from the first power line upon occurrence of a short circuit in the zone. Each second line isolator is configured to connect power from the second power line upon occurrence of an open circuit in the zone. | 06-13-2013 |
| 20130163132 | HIGH SPEED SIGNALING OF POWER SYSTEM CONDITIONS - A high-speed signaling device on a branch of an electric power distribution system modulates the signal from the branch and communicates the signal to an intelligent electronic device on a feeder to the branch at speeds sufficient for the intelligent electronic device to modify protection algorithms based on the signal from the high-speed signaling device. The intelligent electronic device may be a recloser control that controls protective equipment such as a recloser. The signal may be sent via infrared and/or radio frequency. The signal may be modulated so as to communicate information such as the phase with which it is associated. The high-speed signaling device may further communicate current information to the intelligent electronic device. | 06-27-2013 |
| 20130308235 | METHOD FOR ELIMINATING A FAULT ON A HIGH-VOLTAGE DC LINE, SYSTEM FOR TRANSMITTING AN ELECTRIC CURRENT VIA A HIGH-VOLTAGE DC LINE, AND CONVERTER - In order to be able to eliminate a fault on a high-voltage DC line with an AC voltage supply system which is connected via a self-commutated converter in a reliable manner with a comparatively low level of expenditure, the short-circuiting current flowing in the event of the fault is reduced by way of driving in each case at least one H-bridge submodule in phase branches of the converter, which is of modular design, so as to generate a counter-voltage to the voltage across the arc. There is also provide a system for transmitting an electric current via a high-voltage DC line, and also a converter. | 11-21-2013 |
| 20140078628 | POWER DISTRIBUTION SYSTEMS AND METHODS OF OPERATING A POWER DISTRIBUTION SYSTEM - A power distribution system includes a first circuit protection device and a second circuit protection device coupled to the first circuit protection device downstream of the first circuit protection device. The second circuit protection device includes a trip mechanism configured to interrupt a current flowing through the second circuit protection device, and a trip unit operatively coupled to the trip mechanism. The trip mechanism is configured to determine, for the second circuit protection device, a protective threshold, a blocking threshold that is lower than the protective threshold, and a backup threshold that is higher than the protective threshold, activate the trip mechanism based on a determination that the current flowing through the second circuit protection device exceeds the protective threshold, and transmit a first blocking signal to the first circuit protection device upon a determination that the current exceeds the blocking threshold. | 03-20-2014 |
| 20140192448 | POWER SWITCHING ARRANGEMENT - A circuit protection system for a power panel is disclosed. The circuit protection system includes a transistor connected in a channel of a power panel, the transistor connected between return connections of a load and a return path, and the power panel including a plurality of channels connected to the load. The circuit protection system also includes control circuitry electrically connected in parallel with the transistor, the control circuitry configured to selectively activate the transistor to allow current to pass through the transistor based on an observed voltage across the transistor. | 07-10-2014 |
| 20140240880 | COORDINATED CONTROL METHOD FOR POWER DISTRIBUTION SYSTEM WITH DC BUS ELECTRIFICATION SCHEME AND APPARATUS THEREOF - The present invention discloses a coordinated control method for power distribution system with DC bus electrification scheme and apparatus thereof. The method comprises: detecting what kind of disturbances occurs, and at least one of following steps: restoring the voltages of the failed DC buses if power loss is detected on the DC buses due to temporary or permanent failures of upstream power supplies; controlling the voltage of the abnormal DC buses if overvoltage or under-voltage is detected on the DC buses due to internal or external disturbances; and supporting the voltages of the abnormal AC buses if overvoltage or under-voltage is detected on the AC buses due to internal or external disturbances. The methods and apparatus can further improve the fault-ride-through capability for power plant under external or internal disturbances, and facilitate smooth automatic switching process between two DC buses etc. | 08-28-2014 |
| 20140254052 | DISPLAY UNIT CONFIGURED TO DISPLAY TRIP INFORMATION AND CIRCUIT INTERRUPTER INCLUDING THE SAME - A display unit is configured for use with a circuit interrupter which outputs a trip notification, trip information, and direct current power to the display unit The display unit comprises: a processor having a routine; a secondary power source configured to output secondary power; a memory display configured to receive the direct current power or the secondary power; and a power source selection circuit configured to switch the memory display from the direct current power to the secondary power in response to the display unit receiving the trip notification, wherein the routine of said processor is structured to control the memory display to display the trip information in response to the display unit receiving the trip notification. | 09-11-2014 |
| 20140254053 | TRAVELLING-WAVE BASED FAULT PROTECTION OF HIGH-VOLTAGE TRANSMISSION LINES - An improved method of fault detection in a high-voltage direct current (HVDC) power transmission line is provided. The fault detection is based on fault-induced travelling waves. The method comprises estimating an amplitude of fault-induced travelling waves at the fault location, and calculating a fault resistance (R | 09-11-2014 |
| 20150116875 | SAFETY DEVICE FOR A HIGH-VOLTAGE SYSTEM AND METHOD FOR SAFEGUARDING A HIGH-VOLTAGE SYSTEM - The invention relates to a safety device for a high-voltage system, having a coupling device which switchably couples high-voltage components of the high-voltage system to external components, and which is designed to electrically separate the high-voltage components from the external components depending on actuation of a safety switch, having a discharge circuit which is designed to electrically discharge the high-voltage components depending on actuation of the safety switch, and having a monitoring device which is designed to monitor electric parameters of the discharge circuit or of the high-voltage components, and to release the lock of a housing for the high-voltage components if at least one of the electric parameters of the discharge circuit or of the high-voltage components falls below a predetermined threshold value. | 04-30-2015 |
| 20150318686 | METHOD AND SYSTEM FOR REPORTING FAULTS AND CONTROL IN AN ELECTRICAL POWER GRID - A system and method for reporting and control in an electrical power distribution grid including a plurality of sensor devices forming a sensor network are disclosed. Each sensor device monitors and measures attributes of line current for an associated electrical power distribution line at a selected location. Control sensor devices will have control capabilities in addition to its monitoring and measurement capabilities. The sensor devices can detect a fault in a branch of the power grid and send control and fault detected messages to an adjacent upstream sensor on a wireless network comprising a plurality of contention access and contention free time slots wherein a number of the contention free time slots is equal to or greater than a number of sensors in the plurality of sensors. | 11-05-2015 |
| 20150333503 | CENTRALIZED DC CURTAILMENT FOR OVERVOLTAGE PROTECTION - A disconnect unit and an associated method in a photovoltaic system includes a plurality of input power lines configured to receive power from a photovoltaic (PV) generator, and deliver the received power to an inverter. The disconnect unit further includes a sensor configured to determine a voltage at the plurality of input power lines, and a controller configured to selectively disconnect and reconnect one or more of the plurality of input power lines based on the determined voltage. | 11-19-2015 |
| 20150340859 | METHOD OF FAULT CLEARANCE - There is a method of fault clearance for a voltage source converter that interconnects a DC network and an AC network. The voltage source converter is connected to the DC network via one or more DC circuit interruption devices. The method comprises the steps of: (a) detecting a fault in the DC network; (b) carrying out a primary protection sequence, wherein the step of carrying out the primary protection sequence involves carrying out a first sub-sequence that includes the steps of: i. opening the or each DC circuit interruption device, ii. setting a DC power order of the voltage source converter to zero, iii. controlling the voltage source converter to exchange re-circuit breaker active power with the AC network. | 11-26-2015 |
| 20160072269 | Assembly for Electrically Protecting a Potential Short-Circuit or an Overload in a Direct Current Power Network Having a System-Determined, Variable Source-Internal Resistance - An assembly for electrical protecting a potential short-circuit path in a power network having an energy store and having a system-determined, variable source internal resistance. The assembly includes a separating element, the triggering characteristic of which is insufficiently sized for protecting a first and second conductor section of the potential short-circuit path in a first operating state of the energy store, and a second protection device, which is configured to protect the first and second conductor section against a load which occurs below the triggering limit of the separating element in the first operating state. | 03-10-2016 |
| 20160190789 | SERVICE RESTORATION METHOD FOR MULTI-FAULTS IN DISTRIBUTION NETWORK - A multi-faults service restoration method for a power distribution network overcomes the defect that a traditional service restoration method for the power distribution network cannot solve multi-faults. The method includes the steps of performing multi-faults judgment on multi-faults with processing unfinished, to form many multi-faults and many single-faults; then performing unaided fault recovery area division on the multi-faults, and performing power restoration on unaided fault recovery areas one by one; and after the multi-faults are processed, performing power restoration on each single-fault. By adopting the method, the service restoration efficiency is greatly improved, thus contributing to the real-time of service restoration; the factor of load balance is considered when common power restoration lines are decoupled, so that the load rates of the power restoration lines participating in service restoration are more similar after service restoration, and therefore the power supply reliability of the power distribution network is improved. | 06-30-2016 |
| 20160380426 | ELECTRICAL SWITCH - An electrical switch is disclosed for switching an electric current between a feed and an outgoer. The electrical switch can be mounted in a switchgear assembly and as a result electrical contact can be made with the electrical switch by a feed and an outgoer of the switchgear assembly. In one embodiment, the electrical switch includes an internal voltage tap for supplying power to a switch-internal electronics system and a changeover switch. The changeover switch adjusts the electrical connection between the feed or the outgoer and the internal voltage tap. | 12-29-2016 |
