CN204229223U - Phase selection controller test system in intelligent substation - Google Patents
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Abstract
本实用新型公开了一种智能变电站中选相合闸控制器测试系统,包括模拟量输出单元,合并单元,被测设备和录波器,模拟量输出单元用于提供模拟量输出;合并单元用于采集模拟量信息,并将采集的模拟量信息发给被测设备;被测设备包含选相合闸控制器和出口继电器,用来选相合闸控制,根据接收到的合并单元发送的数据驱动出口继电器触点闭合;录波器能够对模拟量和数字量录波并存储。本实用新型的测试系统通过查看对比录波器所录的波形既能找出出口继电器触点闭合时间和三相正弦波信号过零点时间,计算出口继电器触点闭合时间和三相正弦波信号过零点时间的差值,得出选相合闸的精度,又能校正该选相合闸控制器测试系统的误差。
The utility model discloses a phase-selection closing controller test system in an intelligent substation, which comprises an analog output unit, a merging unit, a device to be tested and a wave recorder. The analog output unit is used for providing analog output; the merging unit is used for collecting analog information, and send the collected analog information to the device under test; the device under test includes a phase selection closing controller and an exit relay, which are used for phase selection closing control, and drive the exit relay trigger according to the received data sent by the merging unit. The point is closed; the recorder can record and store analog and digital quantities. The test system of the utility model can not only find out the contact closing time of the export relay and the zero-crossing time of the three-phase sine wave signal by checking and comparing the waveforms recorded by the wave recorder, but also calculate the contact closing time of the export relay and the crossing time of the three-phase sine wave signal. The difference of the zero point time can obtain the accuracy of phase selection closing, and can correct the error of the phase selection closing controller test system.
Description
技术领域technical field
本实用新型属于电力系统变电站自动化技术领域,具体涉及一种智能变电站中选相合闸控制器测试系统。The utility model belongs to the technical field of electric power system substation automation, in particular to a test system for a phase-selection closing controller in an intelligent substation.
背景技术Background technique
开关设备分合闸操作时,系统电压和电流的初相角通常都是随机的,尤其在关合空载变压器、电容器组、并联电抗器和空载线路时,常常产生幅值很高的涌流和过电压,不仅对开关设备本身产生危害,还会引起继电保护装置误动,影响继电保护的动作行为以及断路器的电气寿命等,甚至危及电力系统正常运行。When the switchgear is opened and closed, the initial phase angles of the system voltage and current are usually random, especially when the no-load transformer, capacitor bank, shunt reactor and no-load line are closed, a high-amplitude inrush current is often generated Overvoltage and overvoltage will not only cause harm to the switchgear itself, but also cause the relay protection device to malfunction, affect the action behavior of the relay protection and the electrical life of the circuit breaker, and even endanger the normal operation of the power system.
国外在20世纪90年代即提出选相合闸的方法。随着开关制造技术提高,开关设备合闸时间离散性减小,我国在500KV换流站也使用了选相合闸技术,其目的是解决换流站500KV交流滤波器、无功补偿电器中电容元件故障偏高的问题。选相合闸技术能够大大降低开关设备在合闸操作过程中的过电流和过电压,从而提高了电力设备的寿命和电力系统的稳定性。In the 1990s, foreign countries proposed the method of phase selection and closing. With the improvement of switch manufacturing technology, the discreteness of switching equipment closing time is reduced. my country also uses phase selection closing technology in 500KV converter stations. The purpose is to solve the problem of capacitive components in 500KV AC filters and reactive power compensation appliances The problem of high failure. The phase-selection closing technology can greatly reduce the overcurrent and overvoltage of the switchgear during the closing operation, thereby improving the life of the power equipment and the stability of the power system.
选相合闸控制器用做开关设备的合闸相位控制,还是一种智能型开关分、合闸控制技术。对线路断路器,选择恰当的断路器合闸相位,可以降低空载长线路充电引起的合闸暂态过电压;对控制无功补偿电容器、滤波器投切的断路器,控制断路器合闸相位可以减小合闸对电力电容器造成的涌流冲击,从而减小乃至消除相关的电磁冲击效应。The phase selection closing controller is used as the closing phase control of the switchgear, and it is also an intelligent switch opening and closing control technology. For line circuit breakers, selecting the appropriate closing phase of the circuit breaker can reduce the closing transient overvoltage caused by long-term no-load line charging; for circuit breakers that control reactive power compensation capacitors and filter switching, control the closing The phase can reduce the surge current impact caused by switching on the power capacitor, thereby reducing or even eliminating the related electromagnetic impact effect.
目前还没有可以对选相合闸控制器性能进行测试的仪器。由于断路器合闸后时间可能受环境、操作电压大小、出口继电器的离散型等原因的影响,选相合闸控制器需要对这些影响进行补偿,为检查选相合闸控制器是否具备需要的出口继电器离散性补偿、电压补偿功能,需要专门的测试系统或设备对其进行测试。此外,也需要能检测测试选相合闸控制器系统或设备的仪器,以便检测测试产品是否达到所要求的技术功能和性能。At present, there is no instrument that can test the performance of the phase selection closing controller. Since the time after closing of the circuit breaker may be affected by the environment, the size of the operating voltage, the discrete type of the outlet relay, etc., the phase selection closing controller needs to compensate for these effects. In order to check whether the phase selection closing controller has the required outlet relay Discrete compensation and voltage compensation functions require special test systems or equipment to test them. In addition, instruments that can detect and test the phase selection and closing controller system or equipment are also needed, so as to detect whether the test product meets the required technical functions and performances.
目前未见能用作选相合闸控制器性能测试的专用测试系统或仪器,也未见对测试选相合闸控制器性能的测试系统或设备进行检测的系统或设备。At present, there is no special test system or instrument that can be used for the performance test of the phase selection closing controller, and there is no system or equipment for testing the testing system or equipment for testing the performance of the phase selection closing controller.
实用新型内容Utility model content
本实用新型的目的是提供一种智能变电站中选相合闸控制器测试系统,以测试选相合闸控制器的合闸精度和离散度,并显示测试结果信息。The purpose of the utility model is to provide a phase selection closing controller test system in an intelligent substation to test the closing accuracy and dispersion of the phase selection closing controller and display the test result information.
为了实现以上目的,本实用新型所采用的技术方案是:一种智能变电站中选相合闸控制器测试系统,该系统包括:In order to achieve the above purpose, the technical solution adopted by the utility model is: a phase selection closing controller test system in an intelligent substation, the system includes:
模拟量输出单元,用于提供模拟量输出;An analog output unit for providing analog output;
合并单元,用于采集模拟量信息,并将采集的模拟量信息转换成数字量信息发给被测设备;The merging unit is used to collect analog information, and convert the collected analog information into digital information and send it to the device under test;
被测设备,包含选相合闸控制器和出口继电器,用来选相合闸控制,根据接收到的合并单元发送的数据驱动出口继电器触点闭合;The device under test includes a phase selection closing controller and an exit relay, which are used for phase selection closing control, and drive the exit relay contacts to close according to the received data sent by the merging unit;
录波器,能够对模拟量和数字量录波并存储。Wave recorder, capable of recording and storing analog and digital waves.
所述合并单元具有U1、U2两组输入通道和一个SV输出接口,U1和U2通道均包括对应于三相电压输入的3个子通道,并均分别对应连接模拟量输出单元的三相输出电压;所述U2通道与模拟量输出单元的连接线上串有被测设备的出口继电器。The merging unit has two sets of input channels U1 and U2 and an SV output interface, and the U1 and U2 channels both include 3 sub-channels corresponding to the three-phase voltage input, and are respectively corresponding to the three-phase output voltage connected to the analog output unit; An outlet relay of the device under test is connected in series between the U2 channel and the analog output unit.
所述录波器至少包括3个输入通道CHL1、CHL2和CHL3,每个输入通道均具有三个子通道,CHL1的三个子通道分别对应连接模拟量输出单元的三相输出电压;CHL2的三个子通道分别对应连接合并单元的U2通道的3个子通道;CHL3连接合并单元的SV输出接口。The oscilloscope includes at least 3 input channels CHL1, CHL2 and CHL3, each input channel has three sub-channels, the three sub-channels of CHL1 are respectively connected to the three-phase output voltage of the analog output unit; the three sub-channels of CHL2 Corresponding to the three sub-channels connected to the U2 channel of the merging unit; CHL3 connected to the SV output interface of the merging unit.
所述模拟量输出单元为合并单元的U1通道、U2通道和示波器的CHL1通道提供同一个模拟量输入源。The analog output unit provides the same analog input source for the U1 and U2 channels of the merging unit and the CHL1 channel of the oscilloscope.
所述模拟量输出单元输出频率为50Hz的三相正弦波电压,每相电压之间相差120°。The analog output unit outputs a three-phase sine wave voltage with a frequency of 50 Hz, and the voltage difference between each phase is 120°.
合并单元的两组输入通道采集模拟量信息并转换成数字量后,按照IEC61850-9标准,将多路采样数据合并并打包成SV以太网数据发送给被测设备。After the two sets of input channels of the merging unit collect analog information and convert it into digital quantities, according to the IEC61850-9 standard, the multi-channel sampling data is combined and packaged into SV Ethernet data and sent to the device under test.
所述被测设备的出口继电器为常开触点。The outlet relay of the device under test is a normally open contact.
本实用新型的智能变电站中选相合闸控制器测试系统用于对智能变电站中选相合闸控制器进行测试,并显示测试结果信息,通过查看对比录波器所录的波形,既能找出出口继电器触点闭合时间和三相正弦波信号过零点时间,计算出口继电器触点闭合时间和三相正弦波信号过零点时间的差值,得出选相合闸的精度,又能校正该选相合闸控制器测试系统的误差,弥补现有技术的缺陷。该测试方法能够,使合闸时间更加精确。The phase-selection closing controller test system in the intelligent substation of the utility model is used for testing the phase-selection closing controller in the intelligent substation, and displays the test result information. Point closing time and three-phase sine wave signal zero-crossing time, calculate the difference between the outlet relay contact closing time and three-phase sine wave signal zero-crossing time, get the accuracy of phase selection closing, and can correct the phase selection closing controller The error of the test system makes up for the defects of the prior art. This test method can make the closing time more accurate.
附图说明Description of drawings
图1是本实用新型测试系统原理图;Fig. 1 is a schematic diagram of the utility model testing system;
图2是本实用新型的录波器4 CHL3录波结果显示图;Fig. 2 is the wave recorder 4 CHL3 wave recording result display figure of the utility model;
图3是本实用新型的录波器4 CHL1录波结果显示图;Fig. 3 is the wave recording result display figure of wave recorder 4 CHL1 of the present utility model;
图4是本实用新型的录波器4 CHL2录波结果显示图。Fig. 4 is the wave recorder 4 CHL2 wave recording result display figure of the utility model.
具体实施方式Detailed ways
下面结合附图及具体的实施例对本实用新型进行进一步介绍。Below in conjunction with accompanying drawing and specific embodiment the utility model is further introduced.
如图1所示为本实用新型智能变电站中选相合闸控制器测试系统实施例的原理图,由图可知,该系统包括:模拟量输出单元,合并单元,被测设备和录波器等,其中,模拟量输出单元,用于提供模拟量输出,包括交流量和直流量;合并单元,用于采集模拟量信息,并将采集的模拟量信息转换成数字量信息发给被测设备;被测设备,包含选相合闸控制器和出口继电器,用来选相合闸控制,接收合并单元发送的数据、收发GOOSE命令,通过对接收的数据进行分析处理,计算出合适的合闸相位,并在特定的时间内发送,驱动出口继电器触点闭合;录波器,能够对模拟量和数字量录波并存储,具有用户界面显示功能。其中,模拟量输出单元连接录波器的CHL1通道和合并单元的U1、U2通道;合并单元的SV输出接口连接到被测设备的SV接收口和录波器的CHL3通道;被测设备的出口继电器触点串联在合并单元U2通道与模拟量输出单元的连线上。As shown in Figure 1, it is a schematic diagram of an embodiment of a phase selection and closing controller test system in a smart substation of the present invention. As can be seen from the figure, the system includes: an analog output unit, a merging unit, a device under test and a wave recorder, etc., wherein , the analog output unit is used to provide analog output, including AC and DC; the merging unit is used to collect analog information, and convert the collected analog information into digital information and send it to the device under test; the measured The equipment, including the phase selection closing controller and the exit relay, is used for the phase selection closing control, receives the data sent by the merging unit, sends and receives the GOOSE command, and calculates the appropriate closing phase by analyzing and processing the received data, and in a specific Send within a certain period of time, and drive the outlet relay contact to close; the wave recorder can record and store analog and digital waves, and has a user interface display function. Among them, the analog output unit is connected to the CHL1 channel of the oscilloscope and the U1 and U2 channels of the merging unit; the SV output interface of the merging unit is connected to the SV receiving port of the device under test and the CHL3 channel of the oscilloscope; the outlet of the device under test The relay contacts are connected in series on the connecting line between the U2 channel of the merging unit and the analog output unit.
如图1所示,本实施例的合并单元具有U1、U2两组输入通道和一个SV输出接口,U1通道包括三个子通道,即U1A、U1B、U1C三相电压输入通道,分别对应连接模拟量输出单元的A相输出电压UA、B相输出电压UB和C相输出电压UC;U2通道包括U2A、U2B、U2C三相电压输入通道,分别对应连接模拟量输出单元的A相输出电压UA、B相输出电压UB和C相输出电压UC。As shown in Figure 1, the merging unit of this embodiment has two sets of input channels U1 and U2 and one SV output interface. The U1 channel includes three sub-channels, namely U1A, U1B, and U1C three-phase voltage input channels, which are respectively connected to analog The A-phase output voltage UA, B-phase output voltage UB and C-phase output voltage UC of the output unit; the U2 channel includes U2A, U2B, and U2C three-phase voltage input channels, which correspond to the A-phase output voltage UA and B of the analog output unit respectively. phase output voltage UB and phase C output voltage UC.
合并单元的两组输入通道采集模拟量信息并转换成数字量后,按照IEC61850-9标准,将多路采样数据合并并打包成SV以太网数据发送给被测设备。After the two sets of input channels of the merging unit collect analog information and convert it into digital quantities, according to the IEC61850-9 standard, the multi-channel sampling data is combined and packaged into SV Ethernet data and sent to the device under test.
另外,合并单元的U2通道与模拟量输出单元的连接线上串有被测设备的出口继电器,被测设备的出口继电器为常开触点,三相分别对应A相出口继电器、B相出口继电器和C相出口继电器,A相出口继电器串联在合并单元U2A通道与模拟量输出单元A相电压的连接线上、B相出口继电器串联在合并单元U2B通道与模拟量输出单元B相电压的连接线上,C相出口继电器串联在合并单元U2C通道与模拟量输出单元C相电压的连接线上。In addition, there is an outlet relay of the device under test on the connection line between the U2 channel of the merging unit and the analog output unit. The outlet relay of the device under test is a normally open contact, and the three phases correspond to the A-phase outlet relay and B-phase outlet relay respectively. And C-phase outlet relay, A-phase outlet relay is connected in series on the connection line between the U2A channel of the merging unit and the A-phase voltage of the analog output unit, and the B-phase outlet relay is connected in series on the connection line between the U2B channel of the merging unit and the B-phase voltage of the analog output unit On the top, the C-phase outlet relay is connected in series with the connection line between the U2C channel of the merging unit and the C-phase voltage of the analog output unit.
录波器包括3个输入通道CHL1、CHL2和CHL3,每个输入通道均具有三个子通道,CHL1的三个子通道CHL1A、CHL1B和CHL1C分别对应连接模拟量输出单元的三相输出电压UA、UB和UC;CHL2的三个子通道CHL2A、CHL2B和CHL2C分别对应连接合并单元的U2通道的3个子通道U2A、U2B和U2C;CHL3连接合并单元的SV输出接口。也即,录波器的CHL1和CHL2通道连接模拟量,进行模拟量录波和存储;录波器的CHL3连接数字量通道,进行数字量录波。The oscilloscope includes 3 input channels CHL1, CHL2 and CHL3, and each input channel has three sub-channels. The three sub-channels CHL1A, CHL1B and CHL1C of CHL1 correspond to the three-phase output voltages UA, UB and UC; the three sub-channels CHL2A, CHL2B and CHL2C of CHL2 respectively correspond to the three sub-channels U2A, U2B and U2C of the U2 channel connected to the merging unit; CHL3 is connected to the SV output interface of the merging unit. That is to say, the CHL1 and CHL2 channels of the oscilloscope are connected to analog signals for analog wave recording and storage; the CHL3 of the oscilloscope is connected to digital channels for digital wave recording.
模拟量输出单元为合并单元的U1通道、U2通道和示波器的CHL1通道提供同一个模拟量输入源;模拟量输出单元输出频率为50Hz的三相正弦波电压,每相电压之间相差120°。The analog output unit provides the same analog input source for the U1 channel, U2 channel of the merging unit and the CHL1 channel of the oscilloscope; the analog output unit outputs a three-phase sine wave voltage with a frequency of 50Hz, and the difference between each phase voltage is 120°.
本实用新型测试方法所利用的测试系统包括模拟量输出单元,被测设备,合并单元和录波器,模拟量输出单元同时连接到录波器CHL1通道和合并单元U1、U2通道上,被测设备包含选相合闸控制器和出口继电器,将出口继电器触点串联在合并单元U2通道与模拟量输出单元的连线上;合并单元的U2通道与录波器的CHL2通道连接;合并单元的SV输出接口同时与被测设备和录波器的CHL3连接;该测试方法包括如下步骤:The test system utilized by the test method of the utility model includes an analog output unit, a device under test, a merging unit and a wave recorder, and the analog output unit is connected to the wave recorder CHL1 channel and the merging unit U1, U2 channels at the same time, and the measured The equipment includes a phase-selection closing controller and an exit relay, and the exit relay contacts are connected in series on the connection line between the U2 channel of the merging unit and the analog output unit; the U2 channel of the merging unit is connected to the CHL2 channel of the oscilloscope; the SV of the merging unit The output interface is connected to the CHL3 of the device under test and the wave recorder at the same time; the test method includes the following steps:
(1)打开模拟量输出单元输出三相交流正弦波电压信号,该输出电压为57.74V,频率为50Hz;配置合并单元的SV发送数据,使其与被测设备的SV接收配置保持一致;打开录波器,设置CHL1和CHL2为模拟量录波并存储,设置CHL3为数字量录波并存储,点开始键,开始录波;(1) Turn on the analog output unit to output a three-phase AC sine wave voltage signal, the output voltage is 57.74V, and the frequency is 50Hz; configure the SV sending data of the merging unit to make it consistent with the SV receiving configuration of the device under test; turn on Wave recorder, set CHL1 and CHL2 to record and store analog waves, set CHL3 to record and store digital waves, click the start button to start wave recording;
(2)被测设备接收到选相合闸命令后,驱动出口继电器触点闭合,合并单元的U2通道与模拟量输出单元连接线导通,U2通道开始采集模拟量数据,经合并单元处理并转换成数字量信息后打包成SV以太网数据,发送给被测设备,此时的SV数据包括合并单元的U1通道数据和U2通道数据;(2) After the device under test receives the phase selection closing command, it drives the outlet relay contact to close, the U2 channel of the merging unit is connected to the connection line of the analog output unit, and the U2 channel starts to collect analog data, which is processed and converted by the merging unit After the digital information is packaged into SV Ethernet data, it is sent to the device under test. At this time, the SV data includes the U1 channel data and U2 channel data of the merging unit;
(3)查看录波器所录的波形,根据录波器所录的波形判断被测选相合闸控制器选相合闸的精度。(3) Check the waveform recorded by the oscilloscope, and judge the accuracy of the phase-selection closing controller of the tested phase-selection closing controller according to the waveform recorded by the oscilloscope.
录波器CHL1所录波形是模拟量输出单元直接输出的模拟量,相当于合并单元的U1通道采集的是从录波器开始录波后的模拟量输出单元数据,即A、B、C三相交流电压,如图2所示;录波器CHL2所录波形是以出口继电器触点开始闭合时开始(即合闸时间)的模拟量波形,又称过零点波形,也相当于U2通道采集的是被测设备的出口继电器闭合后模拟量输出单元数据,即A、B、C三相的过零点电压,如图3所示;合并单元的CHL3所录波形是经合并单元处理过的数字化波形,包括U1和U2通道共6组波形,其中U1通道的U1A、U1B和U1C是数字化的CHL1波形,U2通道的U2A、U2B和U2C是数字化的CHL2波形,如图4所示。The waveform recorded by the wave recorder CHL1 is the analog quantity directly output by the analog quantity output unit, which is equivalent to the U1 channel of the merging unit collecting the data of the analog quantity output unit after the wave recorder starts to record, that is, A, B, C three Phase-to-phase AC voltage, as shown in Figure 2; the waveform recorded by the oscilloscope CHL2 is the analog waveform starting when the outlet relay contact starts to close (that is, the closing time), also known as the zero-crossing waveform, which is also equivalent to the U2 channel acquisition What is the data of the analog output unit after the outlet relay of the device under test is closed, that is, the zero-crossing voltage of the three phases A, B, and C, as shown in Figure 3; the waveform recorded by the CHL3 of the merging unit is the digitized Waveforms, including U1 and U2 channels, a total of 6 groups of waveforms, of which U1A, U1B, and U1C of U1 channel are digitized CHL1 waveforms, and U2A, U2B, and U2C of U2 channel are digitized CHL2 waveforms, as shown in Figure 4.
如图4所示,通过对比查看CHL3通道波形(合并单元的U1通道和U2通道数据),可查找出出口继电器触点闭合的时间和三相正弦波信号过零点时间,计算出口继电器触点闭合时间和三相正弦波信号过零点时间的差值,得出选相合闸的精度。As shown in Figure 4, by comparing and viewing the CHL3 channel waveform (the U1 channel and U2 channel data of the merging unit), you can find out the contact closure time of the exit relay and the zero-crossing time of the three-phase sine wave signal, and calculate the contact closure of the exit relay The difference between the time and the zero-crossing time of the three-phase sine wave signal can obtain the accuracy of phase selection and closing.
通过对比图2和图4,即查看对比录波器CHL1通道波形(模拟量输出单元直接输出的模拟量)和CHL3的1、2、3通道波形(模拟量输出单元直接输出的模拟量经合并单元数字化的波形),可验证合并单元U1通道采集的数据有无畸变和延时,校正录波器CHL3通道源电压数据波形,即模/数转换误差,提高测试系统的精度;通过对比图3和图4,即查看对比CHL2通道波形(过零点波形)和CHL3的4、5、6通道波形(模拟量输出单元直接输出的模拟量经合并单元数字化的波形),可验证合并单元U2通道采集的数据有无畸变和延时,校正录波器CHL3通道的过零点电压数据波形,即过零点波形数字化误差,提高测试选相合闸的精度。By comparing Figure 2 and Figure 4, you can see and compare the CHL1 channel waveform of the oscilloscope recorder (the analog quantity directly output by the analog output unit) and the 1, 2, and 3 channel waveforms of CHL3 (the analog quantity directly output by the analog output unit is combined. Unit digitized waveform) can verify whether the data collected by the merging unit U1 channel has distortion and delay, correct the source voltage data waveform of the recorder CHL3 channel, that is, the analog/digital conversion error, and improve the accuracy of the test system; by comparing Figure 3 And Figure 4, that is, to view and compare the CHL2 channel waveform (zero-crossing waveform) and CHL3 channel 4, 5, and 6 waveforms (the analog output directly output by the analog output unit is digitized by the merging unit), which can verify the U2 channel acquisition of the merging unit Whether there is distortion and delay in the data, correct the zero-crossing voltage data waveform of the CHL3 channel of the oscilloscope, that is, the digitization error of the zero-crossing waveform, and improve the accuracy of testing phase selection and closing.
以上实施例仅用于帮助理解本实用新型的核心思想,不能以此限制本实用新型,对于本领域的技术人员,凡是依据本实用新型的思想,对本实用新型进行修改或者等同替换,在具体实施方式及范围上所做的改动,均应包含在本实用新型的保护范围之内。The above embodiments are only used to help understand the core idea of the utility model, and cannot limit the utility model with this. For those skilled in the art, any modification or equivalent replacement of the utility model according to the idea of the utility model shall be carried out in specific implementation. All changes made in the manner and scope shall be included in the protection scope of the present utility model.
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Cited By (3)
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CN104360680A (en) * | 2014-10-24 | 2015-02-18 | 许继电气股份有限公司 | System and method for testing phase-selecting switching-on controller in intelligent transformer substation |
CN105513903A (en) * | 2015-12-03 | 2016-04-20 | 平高集团有限公司 | Debugging platform of circuit breaker |
CN105226815B (en) * | 2015-09-22 | 2018-07-17 | 中国电力科学研究院 | A kind of phase selection intelligent terminal and its implementation applied to intelligent substation |
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CN104360680A (en) * | 2014-10-24 | 2015-02-18 | 许继电气股份有限公司 | System and method for testing phase-selecting switching-on controller in intelligent transformer substation |
CN105226815B (en) * | 2015-09-22 | 2018-07-17 | 中国电力科学研究院 | A kind of phase selection intelligent terminal and its implementation applied to intelligent substation |
CN105513903A (en) * | 2015-12-03 | 2016-04-20 | 平高集团有限公司 | Debugging platform of circuit breaker |
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