180 results about "Bus coupler" patented technology

The invention provides a spare power automatic switching method for a 220kV side circuit and a bus of a 220kV transformer station, comprising the following steps: judging whether a device satisfies the circuit or bus coupler automatic switching charging conditions or not according to the primary wiring conditions and a device setting valve; if the device satisfies the circuit automatic switching charging conditions, judging whether the device satisfies the circuit automatic switching starting conditions or not after charging; if so, starting a spare power automatic switching device, tripping a main supply circuit switch, detecting whether the main supply circuit switch is in the sub-position or not in TT1 (transit time 1), if so, orderly closing a spared switching circuit switch which satisfies the spare power automatic switching conditions under condition of intelligently selecting the circuit in a order of from high to low of the spare power automatic switching priority until the spare power automatic switching is successful or the spare power automatic switching is failed after the judgment on the spare automatic switching priority is finished; and if the device satisfies the bus coupler automatic switching charging conditions, judging whether the device satisfies the bus coupler automatic switching starting conditions or not after charging, if so, starting the spare power automatic switching device, tripping the main supply circuit switch which is free of current and low in voltages, and detecting whether the main supply circuit switch which is free of current and low in voltages is in the sub-position or not in TT2 (transit time 2), if so, combining bus coupler switches after intelligently switching the circuit.

The invention discloses a stand-by power supply automatic switch method for a multi-stage series connection power supply network, wherein the power supply network adopts ring network power supply, and a main power supply mode is that two external power source inlet wires carry left and right buses of a plurality of substations respectively. When a ring network line breaks down or a bus breaks down, a corresponding protective device eliminates fault and sends a switch connection signal through fiber transmission to a protective device of a next stage non switch substation simultaneously where the fault line locates, and sends a starting signal to a bus coupler stand-by power supply automatic switch device where next stage non switch locates. The stand-by power supply automatic switch device detects the starting signal, combined with a self voltage criterion, a remote signal state criterion and the like, determines whether to switch on the stand-by power supply or not simultaneously. Because a stand-by power supply automatic switch of a bus coupler switch of the next stage non switch substation where the fault line locates can not detect the starting signal, the stand-by power supply automatic switch performs no action. According to the invention, a problem that traditional stand-by power supply automatic switch function is lack of selectivity in ring network power supply systemapplication is solved.

The invention relates to an energy system of a micro-grid. The energy system of the micro-grid comprises a first bus, a second bus and a third bus, wherein the first bus is connected with a first bus inlet end of a power grid through a first static switch, the second bus is connected with a second bus inlet end of the power grid through a second static switch, loads are connected to the first bus and the second bus respectively, a bus coupler switch is arranged between the first bus and the second bus in a connected mode, the two ends of the third bus are correspondingly connected with the first bus and the second bus of the micro-grid through a first grid-connecting switch and a second grid-connecting switch respectively, the third bus is connected with a micro-grid energy device, the micro-grid energy device comprises a photovoltaic power generation module, a wind power module, an energy storage module, a fuel cell module and a V2G module, a diverter switch is arranged between the photovoltaic power generation module and the third bus in a connected mode, a diverter switch is arranged between the wind power module and the third bus in a connected mode, a diverter switch is arranged between the energy storage module and the third bus in a connected mode, a diverter switch is arranged between the fuel cell module and the third bus in a connected mode, and a diverter switch is arranged between the V2G module and the third bus in a connected mode. The problems that flexibility and reliability of an energy system of an existing micro-grid are poor, and the low-carbon purpose is not achieved are solved.

An object-oriented bus protection setting method takes a bus voltage transformer in a main bus connection system, a bus coupler or section switch, a feeder switch and a stripe-spanning disconnecting switch as basic composition objects, firstly analyzes the topological structure of each basic composition object, and then forms a bus topological structure, and later takes the bus topological structure as the object so as to finish the differential composition logic of bus differential protection in accordance with a traditional method; by analyzing the configuration information of the basic composition objects, the self-adaptive construction of a bus differential protection scope is finished; each basic composition object respectively defines each type and simultaneously provides relative configuration information: parameter, input and output; according to the configuration information, the topological structure of a protected bus is formed, and then the self-adaptive construction of the bus differential scope, which is finished by analyzing the configuration information of the objects, is protected; and the bus adopting the bus protection setting method has very strong protection and adaptability, can conveniently achieve the bus protection of different main connection systems by modifying the configuration files, and is conducive to improving the program quality.

A paralleled drive having a first plurality of interphase inductors to distribute three phase alternating current power to a first and a second converter that transfer power to a first and a second direct current (DC) buses respectively, a bus coupler connecting the first and second DC buses, a first and a second inverter connected to the first and second DC buses respectively. The drive also includes a controller connected to the first and second converters and the first and second inverters, the controller generates control signals to cause the first and second converter to transfer power to the first and second direct current (DC) buses respectively, and the controller configured to generate control signals to cause the first and the second inverters to generate a plurality of motor excitation signals respectively, and a second plurality of interphase inductors operable to combine the plurality of motor excitation signals.

The invention discloses a test system of an automatic flight control system, and belongs to the aviation engineering test field. The test system is characterized by comprising an automatic flight control signal transmission connecting and disconnecting device for detecting crosslinking signals of an automatic flight control computer, an airborne data bus coupler, an automatic flight control system test interface device, a throttle implementation mechanism, a return actuator, an emulator of a master flight control computer, an air data system emulator, an inertial navigation system emulator, a radio altimeter emulator, a flight management system emulator, a flight state display emulator, an engine parameter system emulator, and test application software. Emulation of crosslinking airborne equipment in an automatic flight control system test can be realized, and a test on the automatic flight control system can be carried out.

A method is disclosed in which data is exchanged via a bus coupler (500) between a network (410) designed for transmitting Ethernet telegrams and a lower-level bus system (420), wherein the bus coupler (500) is connected via a first interface (520) to the network (410) and via a second interface (530) to the lower-level bus system (420), and wherein process data is read in and / or output through at least one bus node (610, 620, 630) of the lower-level bus system (420).Furthermore, a bus coupler (500), a bus node (610, 620, 630), and a control system (10) that are designed for execution of the method are disclosed.

The invention relates to a 10kV high-voltage integral electric energy metering device which comprises a metering cabinet and a fuse protector handcart, wherein a fuse protector chamber, a bus chamber, a voltage transformation chamber, a bus coupler chamber and a metering chamber which are separated by partition plates are arranged in the metering cabinet, the metering chamber, the fuse protector chamber and the voltage transformation chamber are sequentially arranged at the front part of the metering cabinet from top to bottom, the bus chamber and the bus coupler chamber are sequentially arranged at the rear part of the metering cabinet from top to bottom, and the fuse protector handcart is arranged in the fuse protector chamber. Compared with the prior art, the device has the advantages of improvement on work efficiency, improvement on factorization skill, reduction in the comprehensive error of the metering device, excellent mechanical strength and the like.

The invention relates to a dual-power rapid switching control device and a method. The dual-power rapid switching control device is composed of a controller which is used for controlling a bus coupler to be connected with a first bus and a second bus and is connected with a controllable brake resistor component for attenuating residual voltage of a non-voltage bus rapidly, wherein the controllable brake resistor component comprises a first bus rapid switch, a second bus rapid switch and a resistor, one end of the first bus rapid switch is connected with the first bus, and the other end thereof is connected with the resistor, and a control end thereof is connected with the controller; and one end of the second bus rapid switch is connected with the second bus, and the other end is connected with the resistor, and a control end thereof is connected with the controller. When master switch can not be realized, the invention uses the controllable brake resistor component to adjust the residual voltage attenuation characteristic of the bus on line to shorten the attenuation time of the bus residual voltage so as to realize the mode of double rapidness and improve the switching speed of the dual-power power supply system.

The invention discloses a substation on-site protection system, which comprises single-interval protection, cross-interval protection, substation area protection and an automatic monitoring device, and is characterized in that on-site single-interval protection and a public acquisition control terminal are configured at lines, bus couplers and subsections; each side of a substation is configured with the on-site public acquisition control terminal; the cross-interval protection protects a host according to bus and transformer configuration; the substation area protection and the automatic monitoring device performs centralized screen forming configuration in a control room; and the system network is composed of a cross-interval protection private ring network, a monitoring ring network anda public ring network. The substation on-site protection system adopts the on-site single-interval protection, the distributed cross-interval protection and the bidirectional ring network, solves a problem that an intelligent substation relay protection system is reduced in rapidity and reliability and can adapt to various installation occasions and operation environments at the same time.

The invention provides an undisturbed stable switching method for an industrial enterprise factory electrical system. The switching among a main feeder line, a standby feeder line and a bus coupler of a factory electrical system is controlled by an undisturbed stable control device comprising a CPU module, and a load is switched to a standby line. The method comprises the following steps of recognizing a running mode, starting a start mode, selecting a switching mode and judging according to the switching action process and a realizing way. The invention can prevent running voltage interruption or equipment impact damage caused during power supply switching, simplify the power supply switching operation and reduce misoperation, thereby ensuring the power-on continuous running of electrical equipment.

The invention relates to a method for distinguishing the failure and tripping of a high-voltage short-distance double-circuit chain-type power network; after the over-current criterion of a circuit and the power direction criterion act, the circuit is tripped and the tripping is protected by a set time limit and after a bus coupler protection over-current criterion LJM acts, the bus coupler is tripped and the tripping is protected by a set time limit; and the method is also characterized by using the power direction criterion and the over-current criterion LJM phase which are protected by the bus coupler that is closest to a grounding point for accelerating the time limit protection of the circuit which is directly connected with a bus coupler branch after acting. When short-circuit failure happens to some point of the power network, the power direction criterion and the over-current criterion which are protected by the bus coupler branch that is closest to the failure point immediately act to accelerate the current time limit protection on the direction of a circuit which is connected with the bus coupler branch, thereby achieving the purpose of being capable of quickly removing the fault with high selectivity by adopting a relatively simple method.

The invention provides a coordinated control method for a low-voltage flexible distribution network power supply system. The system comprises four distribution transformers T1-T4, four sections of 400V low-voltage AC (alternating current) buses and four flexible DC (direct current) converters, wherein the four sections of 400V low-voltage AC buses are connected through bus coupler switches; a DC bus is further connected to an energy storage system and a distributed photovoltaic system. The coordinated control method is used for performing coordinated control for different fault conditions of bus coupler switch fault, incoming line power loss, flexible direct current converter fault, energy storage converter fault and photovoltaic converter fault in different operation modes. According to the system, interconnection of multiple lines of the distribution network is realized by the flexible DC converters, power wheeling support between the lines is realized, and after a certain distribution line fails and breaks, the flexible DC converters perform islanded operation with load; meanwhile, interconnection is realized on the DC link with photovoltaic and energy storage systems, and an optical storage and flexible DC combined hybrid system is formed.

The invention relates to the technical field of PLC detection, and especially relates to a QT-based cross platform PLC product tool test system and a test method thereof. The QT-based cross platform PLC product tool test system provided by the invention comprises a power supply module with interconnected guide rails, a CPU module, an DI module, an AO module, an occupation module, an AI module, two bus coupler modules, two bus tail-end modules and two DO modules, wherein the EH0 of the CPU module is connected with a host computer so that data is transmitted through an ETH0 transmission protocol on the basis of EtherCAT, the host computer is connected with an AI / AO automatic test module, the AI / AO automatic test module is connected with the AI module, the bus tail-end modules are connected with the bus coupler modules, A ends of the DO modules are connected with the B end of the DI module, the first DO module, the DI module, the AO module and the AI module are each provided with an onsite IO terminal interface, and the CPU module reserves ETH1 and realizes interconnection with an IO system through an X0 master station port. The test precision is high, automatic testing is realized, and the rest result is accurate.

The invention discloses a protective measurement and control integrated device and a protective measurement and control method which are mainly applied to intelligent substations 110 kV and below in voltage class. The protective measurement and control integrated device and the protective measurement and control method are characterized in that a protection function and a measurement and control function are integrated on one device and are respectively achieved through two mutually-independent CPUs, meanwhile a public man-machine interface is also achieved through an independent CPU, and relative independence is kept while function integration. The transformer substation construction cost is saved through the protective measurement and control integrated device, and meanwhile a protection function and measurement and control function integration achieving method is also provided. Based on the protective measurement and control integrated device, sampling data from a merging unit and GOOSE information from an intelligent terminal and other protection devices are received through process layer plug-ins, meanwhile the demands for the protection function and the measurement and control function are met. The protective measurement and control integrated device can be used for circuits, bus couplers, subsections and the like of the intelligent substations 110 kV and below in voltage class.

The present invention discloses a power grid load transfer method based on global search, comprising the following steps: step 1: acquiring grid model data and state estimation data, and based on the grid model data and the state estimation data, making a grid equivalent to an undirected weighted graph; step 2: calculating the bus maximal power supply capability; step 3: searching for the feasible load transfer path of a bus according to the grid model data and the state estimation data acquired in the step 1; and step 4: acquiring the information of a lost-voltage bus, and obtaining the feasible load transfer path of the lost-voltage bus according to the feasible load transfer path of the bus obtained in the step 3 as a final load transfer scheme. The method can find the feasible transmission line load transfer route and the bus coupler switch load transfer route after the occurrence of voltage loss in the substation bus, can quickly and effectively formulate the load transfer scheme under the voltage loss of the substation bus, and can improve the control capability of the dispatcher for the power grid to protect the security and stability of the power grid.

The invention discloses a method for detecting state of an automatic capacity checking switch of a storage battery. The method comprises the following steps: 1, simultaneously collecting bus voltagesand positive and negative bus to ground voltages of two sections of direct current systems, and judging whether a bus coupler switch can be closed or not according to measured data of the voltages; 2,executing a closing operation of the bus coupler switch; 3, detecting whether the bus coupler switch is closed in place or not; 4, disconnecting a # 1 bus throw switch; 5, disconnecting a # 1 charging switch; 6, closing a # 1 discharging switch; 7, disconnecting the # 1 discharging switch after discharging is finished; 8, closing the # 1 charging switch; 9, fully charging the storage battery; 10,closing the # 1 bus throw switch; 11, checking whether the # 1 bus throw switch is closed in place or not; and 12, disconnecting the bus coupler switch. According to the method, the problem of directcurrent bus voltage loss caused by misoperation or improper operation during switch operation can be solved. The operation and maintenance efficiency of the direct current system is improved throughthe automatic capacity checking maintenance system of the storage battery, and the operation safety of the system is ensured.

The invention provides a power control method for a low-voltage flexible distribution network power supply system. The system comprises four distribution transformers T1-T4, four sections of 400V low-voltage AC (alternating current) buses and four flexible DC (direct current) converters, wherein the four sections of 400V low-voltage AC buses are connected through bus coupler switches; a DC bus isfurther connected to an energy storage system and a distributed photovoltaic system. The power control method is used for performing energy storage charge control, emergency power support control andflexible DC converter powerless control in one-way wire inlet operating modes and performing zoned power support control, the emergency power support control and the flexible DC converter powerless control in two-way, three-way and four-way wire inlet operating modes. According to the system, interconnection of multiple lines of the distribution network is realized by the flexible DC converter, power wheeling support between the lines is realized, and after a certain distribution line fails and breaks, the flexible DC converters perform islanded operation with load; meanwhile, interconnectionis realized on the DC link with photovoltaic and energy storage systems, and an optical storage and flexible DC combined hybrid system is formed.

The invention brings forward a switching operation bill generation method of a railway transformation and distribution substation. The method comprises the following steps: selecting an operation task and an operation mode, a system, through carrying out topology analysis on a main wiring diagram, listing circuit breakers of all outlet wires, upper and lower isolation knife brakes, buses, bus couplers and the like, then entering graphic billing, when switching operation is carried out and an operation bill is issued, first of all, selecting a current operation mode, secondly, selecting devices and cabinet bodies which are related to by operation of this time, according to the currently selected devices, extracting rules related with the operation from a rule base to establish a new rule table, for the new rule table, generating operation statements according to a first-transverse-and-then-longitudinal sequence, and filling a bill sample with the generated operation statements. According to the invention, a logic relation table with powerful functions can be automatically generated, through the table, the association sequence among operation cabinet bodies and the logic locking relations among operation devices can be solved, and operation bills of all operation types of a whole station can be automatically generated in an accurate manner.

The invention discloses a testing system and method for an automatic flight control system of an airplane, and belongs to the field of aviation engineering tests. The testing system is composed of an automatic flight control signal transmission disconnection device, automatic flight control system test interface equipment, an airborne cross-linking data bus coupler, a flight simulation system, an airborne cross-linking equipment simulator, a field visualization operation guide unit and simulation test application software. Simulation of airplane motion characteristics in an automatic flight control system test and simulation of cross-linked airborne equipment are carried out by taking an automatic flight control device, an automatic flight control computer, a flight control system bus coupler, a fly-by-wire flight control computer and a fly-by-wire flight actuation system as objects; and operation guidance in the test of the automatic flight control system is completed in a visual form, so that standardized operation of the test is realized, and the test efficiency of the test is improved.

The invention relates to an intelligent remote monitoring system for transformer in power distribution system. The system includes multi-path terminal type of signal collector and multi-path coupler that connects computer controler center to each transformer. The signal collector is type of bus terminal including terminals for inputting and outputting digital quantity, terminals for imputting and outputting analog quantity, special functional terminal and communication terminal. The coupler is bus type. Plug-joint type of connection is adopted by each component piece. The remote monitoring the transformers is power distribution system is realize by using computer in the invention. The invented system provides features easy to collect accurate data, reliable control, normally running system without watching.

The invention discloses an intelligent low-voltage load automatic transfer control device and a control method thereof. The control device comprises a main processor, a storage unit connected with the main processor, a DSP processing unit, an FPGA unit, an on-off input unit, a communication unit, a remote control output unit and a power supply unit for supplying power to the preceding units. The control method includes the steps that remote signaling and remote measurement information of two low-voltage incoming lines is collected, when power rationing occurs or a power supply on one side breaks down, incoming line and bus coupler switches are turned on and off after logic judgment is automatically carried out, and accordingly power supply transfer is finished and the initial state of power supply is restored. The traditional mode that a worker rushes to a site and the switches are manually turned on and off is replaced, power-off time is greatly shortened, economic loss of users is reduced, power supply reliability is improved, and meanwhile, labor intensity of workers and on-site work risks are reduced.

The invention relates to a -48V direct current single system double-power-source storage battery contact device and a switching method thereof. The -48V direct current single system double-power-source storage battery contact device comprises storage batteries, two ways of power sources and a monitoring unit, wherein the storage batteries are divided into a first storage battery pack and a second storage battery pack, the first storage battery pack is connected with the second storage battery pack through a battery bus coupler switch, the battery bus coupler switch comprises a switching air switch, an electrical operation mechanism is arranged on the switching air switch, and the electrical operation mechanism is connected with the monitoring unit. The structure of the -48V direct current single system double-power-source storage battery contact device is characterized in that the relation between the two battery packs are automatically controlled in real time by using a system state obtained by monitoring of the monitoring unit, and thus the two battery packs can be maintained in the optimal states all the time.

The invention relates to an electric propulsion ship alternating-current power supply system which is composed of diesel generator sets, a distribution panel, a propulsion system, and a daily transformer. The diesel generator sets comprise multiple main diesel generator sets and an auxiliary diesel generator set. The distribution panel is divided into areas according to the number of bus-bars, the areas are connected by a bus coupler switch, and the bus coupler switch is closed during normal operation. The outputs of the diesel generator sets are connected to the bus-bars. The distribution panel is configured with a power management system. The propulsion system is composed of a frequency converter with a reactive power compensation function, a three-phase alternating-current asynchronous motor and a propeller which are connected in sequence. The daily transformer provides power for the daily loads of a ship except the propulsion system. The diesel generator sets provide active power load of the propulsion system and the daily loads, and the frequency converter provides reactive power load of the daily loads. The problem that reactive power provided by generators is distributed unequally and the problem of active power consumption fed back when the propulsion system slows down are solved effectively.

Embodiments herein relate to a three-phase paralleled passive front-end drive, that includes a rectifier bridge, a coupling reactance operably connected to the rectifier bridge and configured to transfer power from the rectifier to a first direct current (DC) bus, and a bus coupler operably coupling the first DC bus to a second DC bus. The paralleled drive also includes a first inverter operably connected to the first DC bus; a second inverter operably connected the second DC bus, the first inverter and second the inverter each configured to provide a plurality of motor excitation signals, respectively. The paralleled drive also includes a plurality of interphase inductors operable to combine the plurality of motor excitation signals from the first inverter with the plurality of motor excitation signals from the second inverter.

The invention discloses a detecting and positioning method of a bus coupler flashover fault in a subway alternating current power system. The method comprises the following steps: (1) all protection devices configured in a single power supply zone in the subway alternating current power system is connected to a unified GOOSE network, and the protection devices connected with the GOOSE network are provided with a GOOSE network communication capability; and (2) a bus coupler protection device performing fault detection and location inside each transformer substation realizes a decision logic, and when all the decision logics are met, the bus coupler protection device determines that the a bus coupling protected by the bus coupling protection device has a flashover fault and the bus coupler protection device alarms. The method of the invention can rapidly detect and locate the flashover fault point after the bus coupler flashover fault happens, so that the operating maintenance personnel can quickly restore the normal operation of the metro power supply system and the power supply recovery time is shortened.

The invention relates to a testing system and method for an aircraft management system, and belongs to the field of aviation engineering test. The testing system comprises interface test equipment 1, a bus coupler 5, bus monitoring equipment 6, a bus analyzer 7, airborne crosslinking equipment 8, a network interface coupler 9, airplane model simulation equipment 10, a cabin control system 11 and visualization equipment 12. The testing system takes an aircraft management system computer 2, a flight control system 3 and an electromechanical control system 4 as test objects, simulates node communication, mode switching, redundancy management and control strategy related functions in an aircraft management system test, guides various operations in the test through visual equipment, realizes standardized operation of the test, and improves the test efficiency.

The invention discloses a trajectory control system and method for multiple robots. The trajectory control system comprises an upper controller for solving a rotation angle-time curve according to a received numerical control instruction, a bus coupler for sending the rotation angle-time curve to a lower robot controller and the lower robot controller used for completing the driving of joints andend effector motors of the robots according to the received rotation angle-time curve. The trajectory control system and method can be used for cooperative control over the multiple robots, can significantly improve the movement flexibility and control precision of the robots compared with a traditional multiple-robot control system, and improve the flexible automation level of the robot control.