60 results about "Bus coupler" patented technology

The invention discloses a topology state monitoring-based high-voltage distribution network self-healing model construction method and system, equipment and a medium. The method comprises the steps of obtaining main network topology structure data, equipment operation state data and typical wiring mode data; based on topological structure data and typical wiring mode data, a main network self-healing model including bus self-healing, buscouple self-healing and total station self-healing types is constructed by adopting a graph theory adjacency matrix, and the charging and discharging states of the model are periodically polled and judged according to equipment operation state data. And the linkage analysis of the topology power-off state and the bus voltage abnormity is fused before and after the self-healing process is started, and the self-healing action logic is locked through multiple conditions, so that the problem that the traditional technology is lack of standardized modeling, dynamic state evaluation and linkage analysis is solved, the strategy reusability and the fault power recovery efficiency are improved, the misoperation risk is reduced, and the reliability of the system is improved. And the safety and reliability of the operation of the main network are ensured.

The utility model discloses a novel dual-power multi-standby plug-in low-voltage switch cabinet, which comprises a base, a bus coupler cabinet mounted in the middle of the top end of the base, a first wire inlet cabinet mounted on one side of the top end of the base, and a second wire inlet cabinet mounted on the other side of the top end of the base, drawer type circuit breakers are installed in the middle of the bus coupler cabinet, the middle of the first wire inlet cabinet and the middle of the second wire inlet cabinet respectively, a change-over switch is installed on one side of the top of the front face of the bus coupler cabinet, an automatic switching microcomputer is installed on the other side of the top of the front face of the bus coupler cabinet, and two wire outlet drawers are installed at the bottom of the first wire inlet cabinet and the bottom of the second wire inlet cabinet respectively. According to the novel dual-power-supply multi-standby plug-in low-voltage switch cabinet, the two wire inlet cabinets and the bus coupler cabinet of the low-voltage switch cabinet adopt electrical interlocking to ensure that the three wire inlet cabinets and the bus coupler cabinet cannot be switched on at the same time, and a standby power automatic switching microcomputer and a change-over switch are additionally arranged on the contact cabinet to realize three switching functions of standby power automatic switching, manual operation and stopping.

The invention provides a double-bus differential protection processing method, device and equipment. The method comprises the following steps: acquiring state information of a bus coupler switch and polarity requirement information of a bus coupler current transformer; according to the polarity requirement information, input information in a functional soft pressing plate of the protection device is obtained; obtaining a bus coupler current coefficient of each bus according to the state information and the input information; according to the bus coupler current coefficient of each bus, obtaining a small-difference action current of each bus; and performing control protection processing on each bus according to the small difference action current of each bus and a preset setting value. According to the scheme, polarity self-adaption of the protection device can be realized, the calculation accuracy of small-difference action current of each bus is ensured, the protection device is prevented from generating abnormal differential current to give an alarm or even malfunction, a secondary wiring mode of the current transformer does not need to be changed, and the reliability is high. The workload of technical improvement work of the transformer substation is reduced; and the working safety and the working efficiency are improved.

The invention relates to the field of combined electric appliances, in particular to a double-bus GIS (gas insulated switchgear) extension structure with a reserved interval and a charged withstand voltage test method.The double-bus GIS extension structure with the reserved interval comprises a first bus, a second bus and early-stage equipment arranged on the first bus and the second bus, and the first bus and the second bus are provided with bus interfaces to be extended; the earlier-stage equipment comprises an earlier-stage line I, an earlier-stage line II, a bus coupler, a bus bar I PT, a bus bar II PT, an earlier-stage main transformer I and an earlier-stage main transformer II; the system further comprises extension equipment, and the extension equipment comprises a first extension bus and a second extension bus which are connected with the first bus and the second bus respectively, and an extension line, a reserved interval and an extension main transformer which are arranged on the first extension bus and the second extension bus. Power failure of the whole station is not needed, the consequence that early-stage equipment cannot operate is avoided, the cost is saved, and the flexibility of normal power supply is improved.

The utility model provides a remote expansion module based on an EtherCAT bus, a PCB is provided with an output port or an input port, the output port or the input port is arranged on one side of the PCB corresponding to the operation side of a cabinet, the PCB is also provided with an inlet wire flat cable socket and an outlet wire flat cable socket, and the inlet wire flat cable socket and the outlet wire flat cable socket are connected with the output port or the input port. And the positions of the wire inlet flat cable socket and the wire outlet flat cable socket on the third side are close to the side, corresponding to the operation side of the case, of the PCB. According to the utility model, the remote expansion module based on the EtherCAT bus is connected with the power supply and the EtherCAT bus coupler by adopting the flat cable, a shell can not be adopted, and only a simple bracket is fixed on the guide rail during subsequent installation, so that the cost is lower, the manufacturing is easy, the expansion flexibility is high, and the efficiency is improved; moreover, according to the scheme of the utility model, the operation of inserting the flat cable is flexible, simple and convenient, the flat cable can be quickly mounted on the bus through the flat cable, and the flexibility is high.

A power plant includes a plant controller in communication with and operatively connected to a plurality of BESSs. Each of the plurality of BESSs is composed of a plurality of BESS enclosures, a bus bar including a bus coupler, and a plurality of BESS circuit breakers. Each of the plurality of ESSs is connectable via a respective one of the plurality of BESS circuit breakers to the bus bar to supply electric power to an electric grid. The plant controller is arranged to control the bus coupler to separate the plurality of BESSs into a first network and a second network, control the first network to operate the power plant in a self-supply mode when the bus coupler is in an open state, and control the second network to operate the power plant in black-start mode when the bus coupler is in the open state.

The invention relates to a zero-delay real-time hybrid test method and system based on EtherCAT-PDO mapping and application, and belongs to the technical field of structural engineering tests. Comprising the following steps: establishing an EtherCAT master station manager, and uniformly managing EtherCAT network resources by adopting a single example mode; the EtherCAT slave station equipment is configured to comprise a bus coupler, an analog output module and an analog input module; a straight-through zero-delay data exchange mechanism is set, and data are directly written into a PDO mapping area to realize lowest-delay transmission; a PDO data mapping mechanism is established, and real-time transmission from a numerical substructure calculation result to a physical substructure loading instruction is achieved; a multi-substructure parallel communication architecture is established, and a plurality of numerical substructures and physical substructures are supported to participate in a hybrid test at the same time. According to the method, the technical problems of data loss, overlarge delay, insufficient expansibility and the like in the existing real-time hybrid test communication method are effectively solved.

The utility model discloses a kind of 35kV2500A side expansion bus coupler structures, including side expansion bus coupler and side expansion bushing, side expansion bus coupler is also equipped with side expansion fitting in, side expansion fitting opposite side expansion bus coupler both ends protrude and insert side expansion bushing on conductive fitting, electric clamp ring is also equipped on the conductive fitting, side expansion fitting is equipped with annular groove opposite electric clamp ring, side expansion fitting is also equipped with fitting ring that relative conductive fitting elastically protrudes. Side expansion bus coupler of the utility model when using, through the side expansion fitting in side expansion bus coupler and insert side expansion bushing, through side expansion fitting electric contact conductive fitting realizes electric conduction, and further set up electric clamp ring and telescopic abutting structure, improve limited contact area and improve conductive performance, meet the use of high pressure environment.

The application provides a kind of double busbar bus differential protection processing method, device and equipment, method includes: obtaining the state information of bus coupler switch and the polarity requirement information of bus coupler current transformer;According to the polarity requirement information, obtain the input information in the function soft pressure plate of protection device;According to state information and input information, obtain the bus coupler current coefficient of each bus;According to the bus coupler current coefficient of each bus, obtain the small differential operating current of each bus;According to the small differential operating current of each bus and the preset setting value, control protection processing is carried out to each bus.The scheme of the application can realize the polarity self-adaptation of protection device, ensure the calculation accuracy of the small differential operating current of each bus, avoid the abnormal differential flow of protection device to alarm or even malfunction, without changing the secondary wiring mode of current transformer, reduce the workload of substation technical improvement, and improve the work safety and work efficiency.

The application relates to the field of nuclear phase devices, and discloses a non-contact sensing-based nuclear phase device and method for a ring main unit (RMU) cabinet, which comprises a cabinet body, first and second sections of bus bars are respectively arranged at the top of the cabinet body, a mobile nuclear phase assembly is arranged in the cabinet body, and a control panel is arranged on one side of the cabinet body, wherein the first section of bus bars comprises A-phase bus bars, B-phase bus bars and C-phase bus bars from left to right, and the second section of bus bars comprises A-phase bus bars, B-phase bus bars and C-phase bus bars from right to left; the mobile nuclear phase assembly comprises a telescopic cylinder fixedly arranged on the inner top wall of the cabinet body, horizontal rods are symmetrically arranged at the output end of the telescopic cylinder, and two sliding rail units are symmetrically connected to the two horizontal rods; the telescopic cylinder can drive the sliding rail units to rotate around the fixed shaft, so that the nuclear phase detection unit can be conveniently moved to the position below the corresponding phase bus bar to be detected in the sliding rail unit, and nuclear phase detection is facilitated.

At least one aspect of the present disclosure is directed to a high voltage direct current (HVDC) bus coupler system. The HVDC bus coupler system can include a monitoring unit to detect fault events. The HVDC bus coupler system can include a controller. The controller can include one or more processors to receive a signal indicating an event associated with at least one of a plurality of energy containers in a first configuration. The one or more processors can identify a first energy container corresponding to the event The one or more processors can determine a second configuration of the plurality of energy containers. The one or more processors can modify a configuration of the plurality of energy containers, from the first configuration to the second configuration.

The application belongs to the technical field of power systems, and provides an arc protection system installation optimization method, an arc protection system and a power system. The application adopts a current signal cable to connect a photosensitive probe in a main bus switch compartment and a feeder bus switch compartment with a first main control unit and a second main control unit. The main bus switch compartment and the feeder bus switch compartment are provided with light strips. The application adopts a photosensitive signal cable to connect the main bus switch compartment and the feeder bus switch compartment with the first main control unit and the second main control unit. The application adopts a tripping signal cable to connect a bus coupler switch tripping outlet, a generator incoming line switch tripping outlet and a switch position with the first main control unit and the second main control unit. On the basis of current and arc signal judgment, the bus coupler switch tripping outlet, the generator incoming line switch tripping outlet and the switch position are connected with the first main control unit and the second main control unit through the tripping signal cable, so that the position of a power supply point can be determined, the problem that arc protection cannot accurately remove a faulty bus in a double bus wiring form is solved, and the problem of false removal of a normal power supply point is avoided.

The invention discloses a fault detection method and system for a double-bus system, and the method comprises the steps: obtaining the current of each branch and the current of a bus coupler on two buses under the double-bus system; when it is judged that a fault occurs in the area, large-difference differential current and braking current under the double-bus system are solved, when it is judged that the fault occurs in the area, small-difference differential current of two buses under the double-bus system is solved, and the large-difference differential current and the small-difference differential current of the two buses are processed; time domain feature data of the large-difference differential current and time domain feature data of the small-difference differential current of the two buses are fused, a BP neural network is trained through a fused data set, and a trained double-bus fault detection model is obtained; and the trained double-bus fault detection model is utilized to analyze and diagnose the time domain characteristics of the double buses, so that the fault occurrence position and the fault type can be judged. According to the method, the specific fault type can be judged by using the algorithm model, and the accuracy and reliability of bus fault detection are improved.

The invention provides a medium and low voltage integrated power distribution spare power automatic switching intelligent measurement and control system, which relates to the technical field of spare power automatic switching, and comprises a 6KV system comprehensive protection module, a 6KV system control module, a measurement and control acquisition module, an operation and maintenance management module, a communication switching module and a 400V switching control module, the communication switching module is electrically connected with the 6KV system comprehensive protection module, the 6KV system control module, the measurement and control acquisition module, the operation and maintenance management module and the 400V switching control module. The 6KV system comprehensive protection module collects incoming and outgoing line voltages and incoming and outgoing line currents of a 6KV bus, and sends a tripping command to the communication switching module when a fault occurs so as to correspondingly adjust the 6KV system control module and the measurement and control acquisition module. The 6KV system control module drives a 6KV circuit breaker and a bus tie switch in the 6KV system comprehensive protection module; and the 400V switching control module distributes 400V of a main transformer low-voltage bus to the 6KV system control module, the measurement and control acquisition module and the communication switching module. According to the invention, the anti-interference capability and the self-recovery capability can be enhanced.

The utility model discloses a ring main unit system with bus coupler cabinets capable of being interlocked in a crossed mode. The system comprises a first wire inlet cabinet, a second wire inlet cabinet and a corresponding first bus coupler cabinet which are connected together through a top bus, a second bus coupler cabinet is arranged, first lock structures are arranged in cabinet bodies of the first wire inlet cabinet, the second wire inlet cabinet and the first bus coupler cabinet, and a first closing device is arranged at a load switch operation hole in the right side of the first lock structure; a second lock structure is arranged in the first bus coupler cabinet and the second bus coupler cabinet; a second closing device is arranged at a grounding switch operation hole in the right side of the second lock structure of the first bus coupler cabinet; the grounding switch operation hole at the right side of the second lock structure of the second bus coupler cabinet is provided with the first closing device, and the grounding switch operation hole at the right side of the first lock structure of the second bus coupler cabinet is provided with the second closing device. The technical problem that safety accidents are likely to occur due to the fact that the cross interlocking function between the two bus coupler cabinets in the two-section bus system cannot be achieved is solved.

The application discloses a high-voltage side spare power automatic switching device based on PLC and an automatic switching method thereof, and the automatic switching device comprises a PLC, a first bus, a second bus, a third bus, a first plant internal power supply incoming line, a second plant internal power supply incoming line, a third plant internal power supply incoming line, a fourth plant internal power supply incoming line, a fifth external power supply incoming line, a first incoming line switch, a second incoming line switch, a third incoming line switch, a fourth incoming line switch, a fifth incoming line switch, a first bus coupler switch and a second bus coupler switch, wherein the first plant internal power supply incoming line and the second plant internal power supply incoming line are connected with the first bus respectively, the third plant internal power supply incoming line and the fourth plant internal power supply incoming line are connected with the third bus respectively, the fifth external power supply incoming line is connected with the second bus, each incoming line switch is arranged on each power supply incoming line, and the bus coupler switch is arranged between the buses. The automatic switching device and the automatic switching method thereof have high stability, can reliably switch between operation modes, and have simple automatic switching lines and high automatic switching efficiency.

The invention relates to the technical field of inflatable cabinets, in particular to a circuit breaker inflatable cabinet which comprises a cabinet body, three bus couplers are arranged on one side wall of the cabinet body, three side expansion sleeves are arranged on the other side wall of the cabinet body, the circuit breaker inflatable cabinet further comprises connecting pieces used for connecting the bus couplers and the corresponding side expansion sleeves, and the bus couplers and the side expansion sleeves are completely the same in structure and size. Comprising an insulating substrate and a conductive rod. One end of the connecting piece is provided with a clamping groove matched with the circular plug of the bus coupler, and the other end of the connecting piece is provided with an arc-shaped groove matched with the circular plug of the side expansion sleeve; one side end, provided with the clamping groove, of the connecting piece is further provided with an annular inserting part matched with the inserting groove; when the annular inserting part is inserted into one corresponding inserting groove along with the connecting piece and the clamping groove of the connecting piece is completely matched with the circular plug, the circular plug is inserted in place; the device has the advantages that the structure is simple, and parts are simplified.

The utility model discloses an intelligent injection molding integrated device for a high protection side expansion bus coupler device, and relates to the technical field of injection molding devices, the intelligent injection molding integrated device comprises an injection molding platform, the front side and the rear side of the upper end of the injection molding platform are both provided with sliding rails, and the upper ends of the two sets of sliding rails are both provided with two sets of sliding seats; two sets of limiting plates are further arranged on the two sides of the upper ends of the two sets of sliding rails, a set of connecting rods are arranged between the side walls of every two front and rear sets of sliding bases, rotating rods are arranged on the side walls of the two sets of connecting rods, a bottom die is arranged between the ends of the two sets of rotating rods, and a motor is arranged on the outer wall of the connecting rod on one side; the motor is connected with one set of rotating rods, and a first air cylinder is arranged on the outer wall of the connecting rod on the other side. According to the intelligent injection molding integrated device for the high-protection side expansion bus coupler device, the demolding process can be more convenient and faster, and the production efficiency of the bus coupler device is higher.

The invention discloses a method and a system for identifying an association relationship between a distribution line and a main transformer, and the method comprises the steps: obtaining an initial bus hitching position of the distribution line through a bus connection fixed value or a distribution line disconnecting link position, and obtaining an association relationship between the distribution line and the main transformer based on a bus number, a main transformer switch state, a main transformer current parameter and a buscouple section switch state; a topological search method is adopted to construct a mapping relation between a main transformer and a distribution line, when the main transformer is overloaded, the load of the distribution line is cut off in turns based on the mapping relation and the load priority, and after the operation modes of equipment such as the main transformer, the distribution line and a bus coupler segment are changed, a device constant value area and a tripping matrix do not need to be adjusted. The line protection device and the association identification device automatically identify the association relationship between the main transformer and the distribution line, provide a basis for the main transformer overload intertripping of the distribution line or other functions, provide a load dynamic weight formula and a multi-round load shedding decision scheme, and achieve accurate load shedding.

This invention discloses a gas-insulated metal-enclosed switchgear bus tie cabinet. The cabinet consists of circuit breaker cabinets and instrument transformer cabinets arranged side by side. Each cabinet comprises a front cabinet, a gas chamber, and a rear cabinet arranged sequentially from front to back, mounted on the switchgear's base frame. The internal space of the gas chambers in both the circuit breaker and instrument transformer cabinets is divided into double chambers by horizontal partitions. The upper chamber of the circuit breaker cabinet's gas chamber is the circuit breaker cabinet busbar chamber, and the lower chamber is the circuit breaker chamber. Similarly, the upper chamber of the instrument transformer cabinet's gas chamber is the instrument transformer cabinet busbar chamber, and the lower chamber is the instrument transformer chamber. The circuit breaker and instrument transformer chambers are interconnected, and the electrical components within are connected via copper busbars, forming the lower chamber of the bus tie cabinet. This invention meets relevant national standards, features a reasonable cabinet structure layout, occupies a small area, is easy to select and combine, and facilitates engineering design and mass production. The two switchgear units can form an organic whole with parallel-operating incoming line cabinets, outgoing line cabinets, and feeder cabinets, resulting in an aesthetically pleasing appearance.

The invention provides a method for preventing countercurrent of a new energy power station and an edge gateway. The method comprises the following steps: collecting the real-time power of a common connection point, the real-time power of an inverter and PCS equipment, and the remote signaling state of a bus tie switch; according to the real-time power of the common connection point and the real-time power of the inverter and the PCS equipment, the load power is calculated, the tidal current direction is identified, according to preset power generation target parameters, the power generation deviation is calculated, the power generation plan is dynamically adjusted and issued to the inverter and the PCS equipment, the execution conditions of the inverter and the PCS equipment are recovered in real time, and the adjustment error requirement is met after multi-round iteration; if it is monitored that the telemetering and telesignalling signals are not refreshed for a long time, it is judged that communication is abnormal; and when communication abnormity occurs, the inverter and the PCS equipment are controlled to run in a derating manner or stop running according to the capacity percentage. According to the invention, the investment cost of the secondary equipment of the new energy power station is reduced, and the active power of the distributed photovoltaic system is adjusted through group adjustment and group control of the inverter and the energy storage PCS.

The invention provides a new-generation high-reliability intelligent substation transformation cross-interval information transmission processing method. A 110 kV system main wiring of a 220 kV intelligent substation comprises a double-bus wiring, a main transformer, a plurality of 110 kV line intervals and a bus coupler interval; a 110kV spare power automatic switching device is configured in a 110kV system, an incoming line 1 spare power switching mode is adopted, a 110kV side of a main transformer is an incoming line 1 of the 110kV spare power automatic switching device, a connecting line of the 110kV system and other stations is an incoming line 2 of the 110kV spare power automatic switching device, tripping and closing, intertripping and locking GOOSE messages of the 110kV spare power automatic switching device are transmitted through a process layer network, and a line is partially sent out according to whether the 110kV connecting line is overloaded or not; by applying the technical scheme, effective connection of virtual and real loops of new and old equipment in the transformation process of a new-generation high-reliability intelligent substation is realized, safe and reliable operation of new and old system equipment in a transition stage is ensured, the safe and stable operation requirement of a power grid is met, and the method can be used as a reference for subsequent engineering.

The invention discloses a switching method for rapid loop opening of an electromagnetic looped network of a 110kV transformer substation. The method comprises the following steps: testing a charging condition of a line and a discharging condition of a device; tripping of the incoming line b is carried out, and the incoming line a can be tested; tripping of an incoming line a is carried out, and an incoming line b can be tested; bus tie switch tripping is carried out, and an incoming line a can be tested in a standby power switching mode; bus tie switch tripping is carried out, and an incoming line b can be used for standby power switching test; when the incoming line a trips, the bus coupler can be used for spare power switching test; when the incoming line b trips, the bus coupler can be used for spare power switching test; carrying out a fast switching function charging test; performing a function test of converting main supply of the incoming line a into main supply of the incoming line b; testing the main supply function of the incoming line b to the main supply function of the incoming line a; the operation function test of the whole station of the transfer-in line b in a segmented mode is carried out; and carrying out the test of the whole-station function of the incoming line a in a segmented manner. According to the invention, bidirectional switching between the standby power supply and the working power supply during normal operation and unidirectional switching from the working power supply to the standby power supply during abnormal operation are realized, and shutdown accidents caused by overcurrent of the standby transformer or tripping of important auxiliary machines can be reduced.

The utility model relates to the field of disconnecting switches, in particular to a bus coupler spacing structure based on a double-break disconnecting switch, which comprises a circuit breaker, a low-side mechanism and a high-side mechanism. The low-side mechanism comprises a bent-neck branch arranged on a low-side outlet of the circuit breaker, and an electric grounding switch a, an isolating switch a and a manual grounding switch a which are connected with the bent-neck branch through a low-side shell; the tail end of the isolating switch a is connected with a bus a; the high-side mechanism comprises a current transformer arranged on a high-position side outlet of the circuit breaker, a horizontal branch bus connected with the current transformer, and an electric grounding switch b, an isolating switch b and a manual grounding switch b which are sequentially connected with the horizontal branch bus through a high-side shell, and the tail end of the isolating switch b is connected with a bus b. According to the isolation switch with the double-fracture structure, another fracture and an independent grounding switch still exist at the maintenance position of the circuit breaker, and the presence of multiple insurance enables the circuit breaker to be maintained in a live-line mode and the maintenance is very safe.

The invention discloses a flexible interconnection design method suitable for a complex electrical system. The method comprises the steps that the electrical system is divided into a rigid area and a flexible area; the rigid area comprises a plurality of rigid circuit boards and is used for arranging connectors and components to realize the functions of internal and external interfaces of the system; the flexible area comprises a plurality of flexible circuit belts and is used for laying power supply and communication lines; the rigid circuit boards are interconnected through a flexible circuit band; a 1553B bus coupler is designed; components of the 1553B bus coupler are distributed on a rigid circuit board, and coupling and bus switching of a 1553B bus are achieved.

The invention discloses 27.5 kV box-type environment-friendly high-voltage alternating-current metal-enclosed switchgear, which is characterized in that a three-position isolating switch and a bus coupler sleeve are arranged in a bus and isolating switch chamber B, the bus coupler sleeve is connected with the three-position isolating switch through a copper bar, and a voltage equalizer is mounted between the copper bar and the three-position isolating switch; fastening devices are arranged between the bus and the inner wall of the disconnecting switch chamber B and the inner wall of the circuit breaker chamber C; according to the technical scheme, the bus coupler sleeves are arranged on the side faces, when a plurality of cabinet bodies are combined, the bus coupler sleeves arranged on the side faces of the cabinet bodies can facilitate electric connection between the combined cabinet bodies more conveniently, line turning is not needed, the available space after cabinet combination is greatly improved, and after rated air pressure is charged into the air box, the fastening devices can be tightened, and the cabinet bodies can be prevented from being damaged. And due to the movable connection, other electrical elements in the gas tank are not influenced when being installed, and the operation of clamping and rotating is carried out after the installation is completed.

The utility model discloses a portable Beckhou substation device which comprises a box body, the top of the box body is rotatably connected with a box cover, a display screen is arranged in the box cover, control buttons are arranged in the box cover and located on the outer side of the display screen at equal intervals, and a bus coupler is installed in the box body. I / O terminal modules are arranged on the bus coupler at equal intervals, an analog quantity output terminal is installed in the box body, and a controller is arranged on one side of the analog quantity output terminal. The utility model relates to the technical field of wind turbine generator fault detection, and solves the problems that in the prior art, when Beckhou modules are damaged in batches, another fan needs to be shut down, and corresponding modules are dismounted, replaced and checked, the troubleshooting efficiency is low, the overall power generation efficiency and the operation and maintenance cost of a wind power plant are influenced, and the working efficiency is low. And frequent shutdown operation may cause new faults of the wind turbine generator set, and adverse effects on the service life of the wind turbine generator set are caused.

The utility model relates to a high-power direct-current bus tie electronic switch system, which comprises a first direct-current bus, a second direct-current bus, a high-frequency isolation transformer, a detection system, a monitoring system and a communication system, and is characterized in that the high-frequency isolation transformer is connected between the first direct-current bus and the second direct-current bus; the detection system is used for realizing fault isolation between buses and detecting that loops do not influence each other, the detection system is used for detecting and comparing the voltage of the first direct current bus and the voltage of the second direct current bus, and the monitoring system is used for judging whether a parallel connection technical requirement is met or not according to a detection result. And the communication system is used for receiving a background control instruction and executing parallel connection operation between the direct current buses. The application has the effect of improving the reliability and safety of the system.

The invention discloses a method and device for judging the corresponding connection relation between alternating current lines and current converters, and belongs to the technical field of flexible direct current power transmission and distribution, and the method comprises the steps: determining a first connection state of each alternating current line and each alternating current bus; determining a second connection state between each converter and each AC bus; determining the on-off position state of each bus coupler; and according to the first connection state, the second connection state, the opening and closing position state of the bus coupler and a preset equivalent bus discrimination algorithm, determining a corresponding connection relationship between each AC line and each converter. According to the invention, the first connection state of the AC line and each AC bus, the second connection state of each converter and each AC bus, and the opening and closing position state of each bus coupler are automatically judged; and according to the first connection state, the second connection state, the opening and closing position state of the bus coupler and a preset equivalent bus discrimination algorithm, the corresponding connection relationship between the AC line and the converter is automatically and comprehensively identified, and the rapidity and accuracy of determination are improved.

Electrical installation device (1) with indoor air quality sensor for a home bus system • with a flush-mounted device insert (3), a central sensor part (13) and a cover frame (25), • wherein the flush-mounted device insert (3) has a bus coupler (10) which can be connected on the one hand to a home bus system (33) via a bus connection (11) and on the other hand to the central sensor part (13) via a contact (22), • wherein the central sensor part (13) has a CO2-determining indoor air quality sensor (17) and a control unit (15) and these components can be powered via the contact (22) from the home bus system (33), • wherein the control unit (15) evaluates the sensor signal of the indoor air quality sensor (17) by means of a sensor signal evaluation unit (35) and forwards it to the home bus system (33) via the bus coupler (10), • wherein the central sensor part (13) has a touch surface (14) which acts on a switching element (20) which switches an electrical consumer (30) on / off via the bus coupler (10) and the home bus system (33).