WO2016026231A1 - 四星型电压互感器智能极性检测装置及检测方法 - Google Patents

四星型电压互感器智能极性检测装置及检测方法 Download PDF

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Publication number
WO2016026231A1
WO2016026231A1 PCT/CN2014/092462 CN2014092462W WO2016026231A1 WO 2016026231 A1 WO2016026231 A1 WO 2016026231A1 CN 2014092462 W CN2014092462 W CN 2014092462W WO 2016026231 A1 WO2016026231 A1 WO 2016026231A1
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WIPO (PCT)
Prior art keywords
module
phase
terminal
side unit
secondary side
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PCT/CN2014/092462
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English (en)
French (fr)
Inventor
褚国伟
张关应
杜雪春
杨正平
徐志科
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江苏省电力公司常州供电公司
江苏省电力公司
国家电网公司
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Priority claimed from CN201420477678.4U external-priority patent/CN204008956U/zh
Priority claimed from CN201410419177.5A external-priority patent/CN104166072B/zh
Application filed by 江苏省电力公司常州供电公司, 江苏省电力公司, 国家电网公司 filed Critical 江苏省电力公司常州供电公司
Publication of WO2016026231A1 publication Critical patent/WO2016026231A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers

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  • the invention relates to a detecting device for a four-star type voltage transformer of a power supply system, in particular to a four-star type voltage transformer intelligent polarity detecting device and a detecting method.
  • the voltage transformer acts as a transformer and electrical isolation, which facilitates the conversion of the secondary instrument to a uniform voltage and avoids the danger of directly measuring the line.
  • the four-star voltage transformer also known as the three-phase four-voltage transformer
  • the secondary wiring of the voltage transformer is correct or not directly determines whether it can truly reflect the operation of the system once. Before the voltage transformer is put into operation or during operation, it is necessary to test the correct polarity of the secondary polarity of the voltage transformer to ensure that the second group of wiring is correct, otherwise it will cause problems such as malfunction of the protection device and directly affect the power system. Safe and stable operation.
  • the more common test method is to directly test the voltage transformer by adding a pre-designed sinusoidal voltage waveform on the primary side of the voltage transformer and then using a test tool such as a universal meter.
  • the voltage value of each phase (including zero phase) of the secondary circuit is then manually calculated and analyzed for the measured secondary voltage value of the voltage transformer to determine whether the polarity of the secondary wiring of the voltage transformer is correct or not.
  • the shortcomings are: First, the quality requirements of the field testers are high, the testers need to have corresponding professional knowledge on the four-star voltage transformer, the applicability is not strong; the second is due to the voltage mutual inductance The primary side of the device and the secondary circuit of the voltage transformer are often far apart. The personnel who are stationed on the primary side during the test must cooperate with the secondary circuit tester to complete the entire test process, with low efficiency and certain safety. Hidden dangers; Third, frequent wiring/disconnection during the test process, troublesome test operation, time-consuming and laborious.
  • the object of the present invention is to provide a four-star type voltage transformer intelligent pole which is simple in structure, convenient to use, and uses the duty ratio criterion to automatically determine whether the polarity of the secondary side of the four-star voltage transformer is correct or not. Sex detection device and detection method.
  • the four-star type voltage transformer intelligent polarity detecting device of the present invention comprises a four-star voltage transformer; the primary side of the above four-star voltage transformer has A phase, B phase and C phase The voltage input terminal; the secondary side of the four-star voltage transformer has a phase terminal, a b phase terminal, a C phase terminal, a terminal and an n terminal; the structural features are: a primary side unit and two Secondary unit
  • the primary side unit is provided with a power input terminal, first to third pulse voltage output terminals and a wireless communication terminal; the secondary side unit is provided with first to fifth input terminals and a wireless communication terminal; when used, the primary side unit
  • the power input terminal is connected to 220V alternating current;
  • the first to third pulse voltage output ends of the primary side unit are respectively electrically connected with the A phase, the B phase and the C phase voltage input end of the primary side of the four-star voltage transformer;
  • the a-phase terminal, the b-phase terminal, the C-phase terminal, the l-terminal and the n-terminal of the secondary side of the voltage transformer are respectively electrically connected to the first to fifth input ends of the secondary side unit;
  • the wireless communication end of the unit communicates with the wireless communication end of the secondary side unit;
  • the first to third pulse voltage output ends of the primary side unit respectively output pulse voltages having a frequency of 60 Hz, a voltage peak-to-peak value of 330 V, and a duty ratio of
  • the primary side unit comprises an excitation power module, a control module and a wireless communication module
  • the excitation power module comprises an isolation transformer, a rectification filter module and a pulse voltage generation module
  • the isolation transformer and the rectifying and filtering module are respectively provided with a power input end and a power output end;
  • the pulse voltage generating module is provided with a power input end, first to third pulse voltage output ends and a pulse voltage generating control signal input end;
  • the control module is provided There is a control signal input end and a control signal output end;
  • the wireless communication module is provided with a control signal input end and a signal output end;
  • the power input end of the isolation transformer is the power input end of the primary side unit; the power input end of the rectifier filter module is electrically connected to the power output end of the isolation transformer; the power input end of the pulse voltage generating module and the power output of the rectifier filter module
  • the first to third pulse voltage output ends of the pulse voltage generating module are the first to third pulse voltage output ends of the primary side unit; the pulse voltage generating control signal input terminal and the control of the pulse voltage generating module
  • the control signal output end of the module is electrically connected; the control signal input end of the control module is electrically connected to the signal output end signal of the wireless communication module; and the control signal input end of the wireless communication module is the wireless communication end of the primary side unit described above.
  • the excitation power supply module includes an isolation transformer T1, a rectifier bridge D1, a filter capacitor C1, a resistor R1, a resistor R2, a resistor R3, a first MOS transistor G1, a second MOS transistor G2, and a third MOS transistor G3;
  • the isolation transformer T1 is the above-mentioned isolation transformer; the rectifier bridge D1 and the filter capacitor C1 constitute the above-mentioned rectifier filter module; the resistor R1 and the first MOS transistor G1, the resistor R2 and the second MOS transistor G2, and the resistor R3 and the third MOS transistor G3
  • the A-phase, B-phase, and C-phase pulse voltage generating circuits are respectively configured to constitute the above-described pulse voltage generating module; the drain of the first MOS transistor G1, the drain of the second MOS transistor G2, and the drain of the third MOS transistor G3 That is, the first to third pulse voltage output ends of the pulse voltage generating module, that is, the first to third pulse voltage output ends of the primary side unit; the gate of the first MOS transistor G1 and the second MOS transistor G2 The gate and the gate of the third MOS transistor G3 together constitute a pulse voltage generation control signal input terminal of the above-described pulse voltage generating module.
  • the secondary side unit comprises a subtractor, an operational amplification module, a limiter circuit module, an AD acquisition module, a first single chip processing module, a first RS232 communication module, a second wireless communication module, and a handheld terminal;
  • the terminal comprises a touch screen, a second single chip processing module and a second RS232 communication module;
  • the subtractor is provided with first to fifth input terminals and first to fourth output terminals; the operational amplification module and the limiter circuit module are respectively provided with first to fourth input terminals and first to fourth output terminals; AD
  • the acquisition module is provided with first to fourth input ends and an acquisition signal output end;
  • the first single chip processing module is provided with a first communication end and a second communication end;
  • the second wireless communication module is provided with a control signal input end and a control signal output end
  • the touch screen of the handheld terminal is provided with a communication end; the second single chip processing module and the second RS232 communication module are respectively provided with a first communication end and a second communication end;
  • the first to fifth input ends of the above-mentioned subtractor are the first to fifth input ends of the above-mentioned secondary side unit; the first to fourth input ends of the operational amplification module are respectively the first to fourth input of the subtractor
  • the output end corresponds to the electrical connection; the first to fourth input ends of the limiting circuit module are respectively electrically connected to the first to fourth output ends of the operational amplification module; the first to fourth input ends of the AD acquisition module are respectively limited to the limiting
  • the first to fourth output ends of the circuit module are electrically connected; the acquisition signal input end of the first single chip processing module is electrically connected with the signal of the acquisition signal output end of the AD acquisition module; the communication end of the first single chip processing module communicates with the first RS232
  • the first communication end of the module is electrically connected to the bidirectional signal; the control signal input end of the second wireless communication module is electrically connected to the control signal output end signal of the first single chip processing module; the control signal output end of the second wireless communication module is the above a wireless communication
  • the communication end of the touch screen of the handheld terminal is electrically connected to the first communication end of the second single chip processing module; the second communication end of the second single chip processing module is electrically connected with the first communication end of the second RS232 communication module; The second communication end of the second RS232 communication module is electrically connected to the second communication end of the first RS232 communication module.
  • a further solution is: the interface of the touch screen of the handheld unit of the secondary unit is provided with a “establish connection” button, a “start measurement” button, an A phase test command button PWM_A, a B phase test command button PWM_B, The C phase test command button PWM_C, the detection result display window, and the detection status display window.
  • the core device of the first single-chip processing module of the secondary side unit is a single-chip microcomputer of the MSP430F149 model;
  • the core device of the second single-chip processing module is preferably an ARM11 embedded microprocessor of the S3C6410 model.
  • the above four-star type voltage transformer intelligent polarity detecting device is used for detecting the detecting method of the four-star voltage transformer, and comprises the following steps:
  • the first to third pulse voltage output ends of the primary side unit are electrically connected to the A phase, the B phase and the C phase input end of the primary side of the four-star voltage transformer; the first of the secondary side cells After the fifth input terminal is respectively electrically connected with the a-phase terminal, the b-phase terminal, the C-phase terminal, the l-terminal and the n-terminal of the secondary side of the four-star voltage transformer, power is applied;
  • the primary side unit After the primary side unit receives the A-phase test command sent by the secondary side touch screen through wireless communication, the primary side unit output duty ratio is 25%, the voltage peak value is 330V, and the frequency is 60Hz. The pulse voltage is applied to the four-star voltage.
  • Primary side of the transformer
  • the secondary side unit collects the output voltage of the secondary side of the four-star voltage transformer, and after processing, sends the second single chip processing module to the handheld terminal for determination;
  • the criterion set in the second single chip processing module is:
  • phase B and phase C of the four-star voltage transformer are detected in the same manner as in steps 2 to 4.
  • FIG. 1 is a schematic structural view of an intelligent polarity detecting device for a four-star type voltage transformer according to the present invention, and the electrical connection relationship between the four-star type voltage transformer and the four-star type voltage transformer is also shown;
  • Figure 2 is a schematic structural view of the primary side unit of Figure 1;
  • Figure 3 is a schematic structural view of the secondary side unit of Figure 1;
  • FIG. 4 is an electrical schematic diagram of the excitation power module of FIG. 2;
  • FIG. 5 is a schematic diagram of a display interface of the touch screen of FIG. 3;
  • FIG. 6 is a schematic flow chart of a method for detecting an intelligent polarity of a four-star type voltage transformer according to the present invention.
  • Excitation power supply module 11 isolation transformer 11-1, rectification and filtering module 11-2, pulse voltage generation module 11-3, control module 12, wireless communication module 13;
  • Subtractor 21 operational amplification module 22, limiter circuit module 23, AD acquisition module 24, first single chip processing module 25, first RS232 communication module 26, second wireless communication module 27, handheld terminal 28, touch screen 28-1, a second single chip processing module 28-2, a second RS232 communication module 28-3;
  • the four-star type voltage transformer intelligent polarity detecting device of the present embodiment is mainly composed of a primary side unit 1 and a secondary side unit 2.
  • the primary side unit 1 is provided with a power input terminal, first to third pulse voltage output terminals and a wireless communication end; the secondary side unit 2 is provided with first to fifth input terminals and a wireless communication terminal; and four star voltage transformers 3
  • the primary side has A phase, B phase and C phase voltage input terminals; the secondary side of the four star voltage transformer 3 has a phase terminal, b phase terminal, C phase terminal, l terminal and n terminal .
  • the power input terminal of the primary side unit 1 is connected to 220V alternating current; the first to third pulse voltage output ends of the primary side unit 1 are respectively associated with the A phase, the B phase and the C phase of the primary side of the four-star voltage transformer 3;
  • the voltage input end corresponds to the electrical connection;
  • the a-phase terminal of the secondary side of the four-star voltage transformer 3, the b-phase terminal, the C-phase terminal, the l-terminal and the n-terminal are respectively associated with the second-side unit 2
  • the first to fifth input terminals correspond to the electrical connection;
  • the wireless communication end of the primary side unit 1 communicates with the wireless communication end of the secondary side unit 2; the first to third pulse voltage output ends of the primary side unit 1 respectively output a frequency of 60 Hz,
  • the voltage peak-to-peak value is 330V, and the duty ratio is 25% of the pulse voltage.
  • the primary side unit 1 is mainly composed of an excitation power supply module 11, a control module 12, and a wireless communication module 13.
  • the excitation power supply module 11 is mainly composed of an isolation transformer 11-1, a rectification and filtering module 11-2, and a pulse voltage generation module 11-3.
  • the isolation transformer 11-1 and the rectification and filtering module 11-2 of the excitation power module 11 are respectively provided with a power input terminal and a power output terminal;
  • the pulse voltage generating module 11-3 is provided with a power input terminal and first to third pulse voltage output terminals.
  • the control module 12 is provided with a control signal input end and a control signal input
  • the wireless communication module 13 is provided with a control signal input terminal and a signal output terminal.
  • the power input end of the isolating transformer 11-1 is the power input end of the primary side unit 1; the power input end of the rectifying and filtering module 11-2 is electrically connected to the power output end of the isolating transformer 11-1; the pulse voltage generating module 11
  • the power input end of the -3 is electrically connected to the power output end of the rectifying and filtering module 11-2; the first to third pulse voltage output ends of the pulse voltage generating module 11-3 are the first to the first side of the first side unit 1
  • the three-pulse voltage output terminal; the pulse voltage generating control signal input end of the pulse voltage generating module 11-3 is electrically connected to the control signal output end signal of the control module 12; the control signal input end of the control module 12 and the signal output of the wireless communication module 13
  • the secondary side unit 2 is mainly composed of a subtractor 21, an operational amplification module 22, a limiter circuit module 23, an AD acquisition module 24, a first single chip processing module 25, a first RS232 communication module 26, and a second wireless communication module.
  • 27 is composed of a handheld terminal 28.
  • the handheld terminal 28 is mainly composed of a touch screen 28-1, a second single chip processing module 28-2, and a second RS232 communication module 28-3.
  • the subtracter 21 is provided with first to fifth input terminals and first to fourth output terminals; the operational amplification module 22 and the limiter circuit module 23 are respectively provided with first to fourth input terminals and first to fourth output terminals;
  • the AD collection module 24 is provided with first to fourth input terminals and an acquisition signal output end;
  • the first single chip processing module 25 is provided with an acquisition signal input end, a control signal output end and a communication end;
  • the first RS232 communication module 26 is provided with the first a communication end and a second communication end;
  • the second wireless communication module 27 is provided with a control signal input end and a control signal output end;
  • the touch screen 28-1 of the handy terminal 28 is provided with a communication end;
  • the RS232 communication module 28-3 is provided with a first communication end and a second communication end, respectively.
  • the first to fifth input terminals of the subtractor 21 are the first to fifth input terminals of the aforementioned secondary side unit 2; the first to fourth input terminals of the operational amplification module 22 and the first to fourth of the subtractor 21, respectively
  • the fourth output end corresponds to the electrical connection;
  • the first to fourth input ends of the limiter circuit module 23 are respectively electrically connected to the first to fourth output ends of the operational amplification module 22; the first to fourth inputs of the AD acquisition module 24;
  • the terminals are respectively electrically connected to the first to fourth output ends of the limiter circuit module 23;
  • the input signal input end of the first single chip processing module 25 is electrically connected to the signal of the output signal of the AD acquisition module 24;
  • the communication end of 25 is electrically connected to the first communication end of the first RS232 communication module 26;
  • the control signal input end of the second wireless communication module 27 is electrically connected to the control signal output end signal of the first single chip processing module 25;
  • the communication end of the touch screen 28-1 of the handheld terminal 28 is electrically connected to the first communication end of the second single chip processing module 28-2; the second communication end of the second single chip processing module 28-2 and the second RS232 communication module
  • the first communication end of the 28-3 communication terminal is electrically connected; the second communication end of the second RS232 communication module 28-3 is electrically connected to the second communication end of the first RS232 communication module 26.
  • the excitation power module 11 is mainly composed of an isolation transformer T1, a rectifier bridge D1, a filter capacitor C1, a resistor R1, a resistor R2, a resistor R3, a first MOS transistor G1, a second MOS transistor G2, and a third MOS transistor G3.
  • the isolation transformer T1 of the excitation power module 11 is the aforementioned isolation transformer 11-1; the rectifier bridge D1 and the filter capacitor C1 constitute the aforementioned rectification and filtering module 11-2; the resistor R1 and the first MOS transistor G1, the resistor R2 and the second MOS The tube G2, the resistor R3, and the third MOS transistor G3 constitute an A-phase, a B-phase, and a C-phase pulse voltage generating circuit, respectively, and collectively constitute the aforementioned pulse voltage generating module 11-3.
  • the drain of the first MOS transistor G1, the drain of the second MOS transistor G2, and the drain of the third MOS transistor G3 are the first to third pulse voltage output terminals of the aforementioned pulse voltage generating module 11-3, that is, The first to third pulse voltage output terminals of the primary side unit 1; the gate of the first MOS transistor G1, the gate of the second MOS transistor G2, and the gate of the third MOS transistor G3 together constitute the aforementioned pulse voltage generating module 11 A pulse voltage of -3 produces a control signal input.
  • the interface of the touch screen 28-1 of the handheld terminal 28 is provided with a "establish connection” button, a "start measurement” button, an A phase test command button PWM_A, a B phase test command button PWM_B, a C phase test command button PWM_C, The detection result display window and the detection status display window.
  • the "establish connection” button is used to establish communication between the handheld terminal 28 and the first single chip processing module 25; after the "start measurement” measurement is pressed, the A phase test command button PWM_A B phase test command button PWM_B and phase C test are respectively pressed.
  • the command button PWM_C can automatically test the polarity of the A phase, the B phase and the C phase of the four-star voltage transformer 3, and the test state is displayed in real time by the detection state display window on the touch screen 28-1; the test result is on the touch screen 28 The detection result display window of -1 is displayed in real time.
  • the core device of the first single chip processing module 25 is preferably a single chip of the MSP430F149 model; the core device of the second single chip processing module 28-2 is preferably an ARM11 embedded microprocessor of the S3C6410 model.
  • the excitation power supply module 11 of the primary side unit 1 is configured to generate a pulse voltage of a frequency of 60 Hz, a peak-to-peak value of 330 V, and a duty ratio of 25% for the A phase, the B phase, and the C phase;
  • the wireless communication module 13 is configured to pass The wireless communication receives the control command of the secondary side unit 2 and sends it to the control module 12, and the control module 12 controls the excitation power supply module 11 to generate a pulse voltage of the A phase, the B phase, or the C phase, respectively.
  • the subtractor 21 of the secondary side unit 2 collects the voltage value of the secondary side of the four-star voltage transformer and transmits it to the operational amplification module 22, and the operational amplification module 22 converts the negative value of the pulse voltage into a positive value to facilitate the AD acquisition module 24
  • the limiting circuit module 23 is configured to limit the negative pulse voltage to the data acquisition range of the AD acquisition module 24; the first single chip processing module 25 is configured to process the collected voltage data and pass the first RS232 communication module.
  • the first single chip processing module 25 is further configured to pass the second single chip processing module 28-2 and The second RS232 communication module 28-3 receives the command sent by the touch screen 28-1 and transmits it to the wireless communication module 13 of the primary side unit 1 via the second wireless communication module 27; the touch screen 28-1 of the handheld terminal 28 is used for the tester manual The test state and the test result are displayed and displayed in real time; the second single chip processing module 28-2 is configured to determine the collected data according to the set criteria and send the determination result to the touch screen 28-1 for real time display.
  • the four-star type voltage transformer intelligent polarity detecting device of the present embodiment is used for detecting the polarity of the secondary side of the four-star voltage transformer 3, and mainly includes the following steps:
  • the first to third pulse voltage output ends of the primary side unit 1 are electrically connected to the A phase, the B phase and the C phase input end of the primary side of the four-star voltage transformer 3;
  • the secondary side unit 2 is The first to fifth input terminals are respectively electrically connected with the a-phase terminal, the b-phase terminal, the C-phase terminal, the l-terminal and the n-terminal of the secondary side of the four-star voltage transformer 3, and then Electricity;
  • the controller 12 controls the excitation power supply module 11 to generate a duty ratio of 25%, a voltage peak of 330V, and a frequency of 60 Hz.
  • the pulse voltage is applied to the primary side of the four-star voltage transformer 3;
  • the secondary side unit 2 collects the voltage outputted by the secondary side of the four-star voltage transformer 3, and sends it to the second single chip processing module 28-2 of the handheld terminal 28 for determination; the second single chip processing module 28-2
  • the criterion is that if the voltage signal is not collected, it is determined that the secondary side phase sequence of the four-star voltage transformer 3 is reversed; if the duty ratio of the pulse voltage collected by the secondary side is 25%, the polarity is determined. Correct; if the duty ratio of the pulse voltage collected on the secondary side is 75%, the polarity is determined to be wrong; and the determination result is sent to the touch screen 28-1 in real time;
  • phase B and phase C of the four-star voltage transformer 3 are detected in the same manner as in steps 2 to 4.
  • the invention has positive effects: (1)
  • the four-star type voltage transformer intelligent polarity detecting device of the invention only needs to use the primary side unit and the secondary side unit separately with the measured four-star type voltage when in use.
  • Transformer The secondary wiring can be used without frequent disconnection and wiring, which can greatly improve work efficiency and reduce the workload of workers.
  • the four-star type voltage transformer intelligent polarity detecting device of the present invention when used, the detecting personnel only need to operate the touch screen of the handheld device of the secondary side unit to automatically complete the entire detecting process, and the detection result is
  • the visual display on the touch screen has low requirements on the operator's professional knowledge. Even if there is no professional experience, the whole test can be successfully completed, and the applicability is strong.
  • the four-star type voltage transformer intelligent polarity detecting device of the invention has a simple structure and convenient operation.
  • the detection method of the intelligent polarity detecting device of the four-star type voltage transformer of the present invention uses the duty ratio criterion to determine the polarity of the secondary side of the four-star type voltage transformer, the logic is simple, and the result of the determination is reliable. High sex.

Abstract

一种四星型电压互感器智能极性检测装置及其检测方法，该装置包括一次侧单元（1）和二次侧单元（2）；一次侧单元（1）包括激励电源模块（11）、控制模块（12）和无线通信模块（13）；激励电源模块（11）使用时输出脉冲电压；二次侧单元（2）包括减法器（21）、运算放大模块（22）、限幅电路模块（23）、AD采集模块（24）、第一单片机处理模块（25）、第一RS232通信模块（26）、第二无线通信模块（27）和手持终端（28）；手持终端（28）包括触摸屏（28-1）、第二单片机处理模块（28-2）；该检测方法主要包括一次性接线并加电、通过操作触摸屏（28-1）发送检测命令、一次侧单元（1）接收命令输出脉冲电压、二次侧单元（2）采集四星形电压互感器的二次侧输出电压并依设定的占空比判据进行判定并将结果显示。本技术方案结构简单、操作方便、适用性强、判据逻辑简单，判定结果可靠性高。

Description

四星型电压互感器智能极性检测装置及检测方法 技术领域
本发明涉及供电系统四星型电压互感器的检测设备，具体涉及一种四星型电压互感器智能极性检测装置及检测方法。
背景技术
在供电系统中，电压互感器起着变压以及电气隔离作用，便于二次仪表测量需要转换为统一的电压，避免直接测量线路的危险。在10kV系统中，为消除铁磁谐振对电压互感器的不利影响，四星形电压互感器(又称三相四电压互感器)得到了广泛的应用。电压互感器的二次接线正确与否直接决定其能否真正反应一次系统的运行情况。电压互感器在投运之前或运行过程中，需要对电压互感器二次极性正确性进行测试，确保其二次整组接线正确，否则会导致保护装置误动作等问题，直接影响电力系统的安全、稳定运行。对于电压互感器二次侧极性正确性的测试，现今较为常用的测试方法是：通过在电压互感器一次侧加入预先设计好的正弦电压波形，再利用万能表等测试工具直接测试电压互感器二次回路各相(包括零相)电压数值，然后对测得的电压互感器二次电压值进行人工演算分析，来判断电压互感器二次接线的极性正确性与否。采用传统的测试方法，其不足之处在于：一是对现场测试人员的素质要求较高，需要测试人员对四星形电压互感器具有相应的专业知识，适用性不强；二是由于电压互感器一次侧与电压互感器二次回路往往相隔较远，测试时驻守在一次侧施压人员必须与二次回路测试人员进行呼应配合以完成整个测试流程，工作效率较低，并存在一定的安全隐患；三是测试过程中需要频繁多次接线/拆线，测试操作麻烦，费时费力。
近来，用于四星形电压互感器极性测试的新的测试装置和测试方法已见研究，如公开号为CN103969546A、名称为“四星形电压互感器二次极性智能测试仪”、授权公告号为CN203117358U、名称为“一种四星形电压互感器二次极性智能测试仪”以及公开号为CN103969540A、发明名称为“四星形电压互感器二次回路接线的测试方法”等中国专利文献，即公开了一种四星形电压互感器二次极性智能测试仪及用其进行四星形电压互感器的测试方法，其公开的测试仪结构相对比较复杂，所采用的测试方法采用三相电压测试法和单相电压测试法进行测试并互相印证测试结果，测试判据基于向量分析，计算比较复杂。
发明内容
本发明的目的是：提供一种结构简单、使用方便、使用时采用占空比判据自动对四星形电压互感器二次侧极性正确与否进行判定的四星型电压互感器智能极性检测装置及检测方法。
本发明的技术方案是：本发明的四星型电压互感器智能极性检测装置，包括四星形电压互感器；上述的四星形电压互感器的一次侧具有A相、B相和C相电压输入端；四星形电压互感器的二次侧具有a相接线端、b相接线端、C相接线端、l接线端和n接线端；其结构特点是：还包括一次侧单元和二次侧单元；
上述的一次侧单元设有电源输入端、第一至第三脉冲电压输出端和无线通信端；二次侧单元设有第一至第五输入端和无线通信端；使用时，一次侧单元的电源输入端接220V交流电；一次侧单元的第一至第三脉冲电压输出端分别与四星形电压互感器的一次侧的A相、B相和C相电压输入端对应电连接；四星形电压互感器的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端分别与二次侧单元的第一至第五输入端对应电连接；一次侧单元的无线通信端和二次侧单元的无线通信端通信；一次侧单元的第一至第三脉冲电压输出端分别输出频率为60Hz、电压峰峰值为330V、占空比为25％的脉冲电压。
进一步的方案是：上述的一次侧单元包括激励电源模块、控制模块和无线通信模块；激励电源模块包括隔离变压器、整流滤波模块和脉冲电压产生模块；
上述的隔离变压器和整流滤波模块分别设有电源输入端和电源输出端；脉冲电压产生模块设有电源输入端、第一至第三脉冲电压输出端和脉冲电压产生控制信号输入端；控制模块设有控制信号输入端和控制信号输出端；无线通信模块设有控制信号输入端和信号输出端；
隔离变压器的电源输入端即为上述的一次侧单元的电源输入端；整流滤波模块的电源输入端与隔离变压器的电源输出端电连接；脉冲电压产生模块的电源输入端与整流滤波模块的电源输出端电连接；脉冲电压产生模块的第一至第三脉冲电压输出端即为上述的一次侧单元的第一至第三脉冲电压输出端；脉冲电压产生模块的脉冲电压产生控制信号输入端与控制模块的控制信号输出端信号电连接；控制模块的控制信号输入端与无线通信模块的信号输出端信号电连接；无线通信模块的控制信号输入端即为上述的一次侧单元的无线通信端。
进一步的方案是：上述的激励电源模块包括隔离变压器T1、整流桥D1、滤波电容C1、电阻R1、电阻R2、电阻R3、第一MOS管G1、第二MOS管G2和第三MOS管G3；
隔离变压器T1即为上述的隔离变压器；整流桥D1和滤波电容C1构成上述的整流滤波模块；电阻R1和第一MOS管G1、电阻R2和第二MOS管G2以及电阻R3和第三MOS管G3分别构成A相、B相和C相脉冲电压产生电路且共同构成上述的脉冲电压产生模块；第一MOS管G1的漏极、第二MOS管G2的漏极和第三MOS管G3的漏极即为上述的脉冲电压产生模块的第一至第三脉冲电压输出端，也即一次侧单元的第一至第三脉冲电压输出端；第一MOS管G1的栅极、第二MOS管G2的栅极和第三MOS管G3的栅极共同构成上述的脉冲电压产生模块的脉冲电压产生控制信号输入端。
进一步的方案是：上述的二次侧单元包括减法器、运算放大模块、限幅电路模块、AD采集模块、第一单片机处理模块、第一RS232通信模块、第二无线通信模块和手持终端；手持终端包括触摸屏、第二单片机处理模块和第二RS232通信模块；
上述的减法器设有第一至第五输入端和第一至第四输出端；运算放大模块和限幅电路模块分别设有第一至第四输入端和第一至第四输出端；AD采集模块设有第一至第四输入端和采集信号输出端；第一单片机处理模块设有第一通信端和第二通信端；第二无线通信模块设有控制信号输入端和控制信号输出端；手持终端的触摸屏设有通信端；第二单片机处理模块和第二RS232通信模块分别设有第一通信端和第二通信端；
上述的减法器的第一至第五输入端即为上述的二次侧单元的第一至第五输入端；运算放大模块的第一至第四输入端分别与减法器的第一至第四输出端对应电连接；限幅电路模块的第一至第四输入端分别与运算放大模块的第一至第四输出端对应电连接；AD采集模块的第一至第四输入端分别与限幅电路模块的第一至第四输出端对应电连接；第一单片机处理模块的采集信号输入端与AD采集模块的采集信号输出端信号电连接；第一单片机处理模块的通信端与第一RS232通信模块的第一通信端双向信号电连接；第二无线通信模块的控制信号输入端与第一单片机处理模块的控制信号输出端信号电连接；第二无线通信模块的控制信号输出端即为上述的二次侧单元的无线通信端；
手持终端的触摸屏的通信端与第二单片机处理模块的第一通信端双向信号电连接；第二单片机处理模块的第二通信端与第二RS232通信模块的第一通信端双向信号电连接；第二RS232通信模块的第二通信端与第一RS232通信模块的第二通信端双向信号电连接。
进一步的方案是：上述的二次侧单元的手持终端的触摸屏的界面上设置有“建立连接”按钮、“开始测量”按钮、A相测试命令按钮PWM_A、B相测试命令按钮PWM_B、 C相测试命令按钮PWM_C、检测结果显示窗口和检测状态显示窗口。
进一步的方案还有：上述的二次侧单元的第一单片机处理模块的核心器件为MSP430F149型号的单片机；第二单片机处理模块的核心器件优选为S3C6410型号的ARM11嵌入式微处理器。
一种上述的四星型电压互感器智能极性检测装置，其用于检测四星形电压互感器的检测方法，包括以下步骤：
①接线：将一次侧单元的第一至第三脉冲电压输出端与四星形电压互感器的一次侧的A相、B相和C相输入端对应电连接；将二次侧单元的第一至第五输入端分别与四星形电压互感器的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端对应电连接后，加电；
②按下触摸屏上的“建立连接”按钮；接着按下“开始测量”按钮；然后按下A相测试命令按钮PWM_A，对四星形电压互感器的A相进行检测；
③一次侧单元通过无线通信接收到二次侧触摸屏所发的A相测试命令后，一次侧单元输出占空比为25％、电压峰值为330V、频率为60Hz的脉冲电压施加于四星形电压互感器的一次侧；
④二次侧单元采集四星形电压互感器的二次侧输出的电压，经处理后发送给手持终端的第二单片机处理模块进行判定；第二单片机处理模块内设的判据为：
若未采集到电压信号，判定四星形电压互感器的二次侧相序接反；
若二次侧采集的脉冲电压的占空比为25％，判定极性正确；
若二次侧采集的脉冲电压的占空比为75％，判定极性错误；
并将判定结果实时发送给触摸屏28-1显示；
⑤依步骤②至步骤④相同的方法对对四星形电压互感器的B相和C相进行检测。
附图说明
图1为本发明的四星型电压互感器智能极性检测装置的结构示意图，图中还显示了其与四星型电压互感器的电连接关系；
图2为图1中一次侧单元的结构示意图；
图3为图1中的二次侧单元的结构示意图；
图4为图2中的激励电源模块的一种电原理图；
图5为图3中的触摸屏的显示界面的示意图；
图6为本发明的四星型电压互感器智能极性检测方法的流程示意图。
上述附图中的附图标记如下：
一次侧单元1，
激励电源模块11，隔离变压器11-1，整流滤波模块11-2，脉冲电压产生模块11-3，控制模块12，无线通信模块13；
二次侧单元2，
减法器21，运算放大模块22，限幅电路模块23，AD采集模块24，第一单片机处理模块25，第一RS232通信模块26，第二无线通信模块27，手持终端28，触摸屏28-1，第二单片机处理模块28-2，第二RS232通信模块28-3；
四星形电压互感器3。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
(实施例1)
见图1，本实施例的四星型电压互感器智能极性检测装置，主要由一次侧单元1和二次侧单元2组成。
一次侧单元1设有电源输入端、第一至第三脉冲电压输出端和无线通信端；二次侧单元2设有第一至第五输入端和无线通信端；四星形电压互感器3的一次侧具有A相、B相和C相电压输入端；四星形电压互感器3的二次侧具有a相接线端、b相接线端、C相接线端、l接线端和n接线端。
使用时，一次侧单元1的电源输入端接220V交流电；一次侧单元1的第一至第三脉冲电压输出端分别与四星形电压互感器3的一次侧的A相、B相和C相电压输入端对应电连接；四星形电压互感器3的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端分别与二次侧单元2的第一至第五输入端对应电连接；一次侧单元1的无线通信端和二次侧单元2的无线通信端通信；一次侧单元1的第一至第三脉冲电压输出端分别输出频率为60Hz、电压峰峰值为330V、占空比为25％的脉冲电压。
见图2，一次侧单元1主要由激励电源模块11、控制模块12和无线通信模块13组成。激励电源模块11主要由隔离变压器11-1、整流滤波模块11-2和脉冲电压产生模块11-3组成。
激励电源模块11的隔离变压器11-1和整流滤波模块11-2分别设有电源输入端和电源输出端；脉冲电压产生模块11-3设有电源输入端、第一至第三脉冲电压输出端和脉冲电压产生控制信号输入端；控制模块12设有控制信号输入端和控制信号输 出端；无线通信模块13设有控制信号输入端和信号输出端。
隔离变压器11-1的电源输入端即为前述的一次侧单元1的电源输入端；整流滤波模块11-2的电源输入端与隔离变压器11-1的电源输出端电连接；脉冲电压产生模块11-3的电源输入端与整流滤波模块11-2的电源输出端电连接；脉冲电压产生模块11-3的第一至第三脉冲电压输出端即为前述的一次侧单元1的第一至第三脉冲电压输出端；脉冲电压产生模块11-3的脉冲电压产生控制信号输入端与控制模块12的控制信号输出端信号电连接；控制模块12的控制信号输入端与无线通信模块13的信号输出端信号电连接；无线通信模块13的控制信号输入端即为前述的一次侧单元1的无线通信端。
见图3，二次侧单元2主要由减法器21、运算放大模块22、限幅电路模块23、AD采集模块24、第一单片机处理模块25、第一RS232通信模块26、第二无线通信模块27和手持终端28组成。手持终端28主要由触摸屏28-1、第二单片机处理模块28-2和第二RS232通信模块28-3组成。
减法器21设有第一至第五输入端和第一至第四输出端；运算放大模块22和限幅电路模块23分别设有第一至第四输入端和第一至第四输出端；AD采集模块24设有第一至第四输入端和采集信号输出端；第一单片机处理模块25设有采集信号输入端、控制信号输出端和通信端；第一RS232通信模块26设有第一通信端和第二通信端；第二无线通信模块27设有控制信号输入端和控制信号输出端；手持终端28的触摸屏28-1设有通信端；第二单片机处理模块28-2和第二RS232通信模块28-3分别设有第一通信端和第二通信端。
减法器21的第一至第五输入端即为前述的二次侧单元2的第一至第五输入端；运算放大模块22的第一至第四输入端分别与减法器21的第一至第四输出端对应电连接；限幅电路模块23的第一至第四输入端分别与运算放大模块22的第一至第四输出端对应电连接；AD采集模块24的第一至第四输入端分别与限幅电路模块23的第一至第四输出端对应电连接；第一单片机处理模块25的采集信号输入端与AD采集模块24的采集信号输出端信号电连接；第一单片机处理模块25的通信端与第一RS232通信模块26的第一通信端双向信号电连接；第二无线通信模块27的控制信号输入端与第一单片机处理模块25的控制信号输出端信号电连接；第二无线通信模块27的控制信号输出端即为前述的二次侧单元2的无线通信端。
手持终端28的触摸屏28-1的通信端与第二单片机处理模块28-2的第一通信端双向信号电连接；第二单片机处理模块28-2的第二通信端与第二RS232通信模块 28-3的第一通信端双向信号电连接；第二RS232通信模块28-3的第二通信端与第一RS232通信模块26的第二通信端双向信号电连接。
见图4，激励电源模块11主要由隔离变压器T1、整流桥D1、滤波电容C1、电阻R1、电阻R2、电阻R3、第一MOS管G1、第二MOS管G2和第三MOS管G3组成。
激励电源模块11的隔离变压器T1即为前述的隔离变压器11-1；整流桥D1和滤波电容C1构成前述的整流滤波模块11-2；电阻R1和第一MOS管G1、电阻R2和第二MOS管G2以及电阻R3和第三MOS管G3分别构成A相、B相和C相脉冲电压产生电路且共同构成前述的脉冲电压产生模块11-3。第一MOS管G1的漏极、第二MOS管G2的漏极和第三MOS管G3的漏极即为前述的脉冲电压产生模块11-3的第一至第三脉冲电压输出端，也即一次侧单元1的第一至第三脉冲电压输出端；第一MOS管G1的栅极、第二MOS管G2的栅极和第三MOS管G3的栅极共同构成前述的脉冲电压产生模块11-3的脉冲电压产生控制信号输入端。
见图5，手持终端28的触摸屏28-1的界面上设置有“建立连接”按钮、“开始测量”按钮、A相测试命令按钮PWM_A、B相测试命令按钮PWM_B、C相测试命令按钮PWM_C、检测结果显示窗口和检测状态显示窗口。“建立连接”按钮用于建立手持终端28与第一单片机处理模块25的通信；“开始测量”测量按下后，再分别按下A相测试命令按钮PWM_A B相测试命令按钮PWM_B和C相测试命令按钮PWM_C即可自动对四星形电压互感器3的A相、B相和C相极性进行测试，测试状态由触摸屏28-1上的检测状态显示窗口进行实时显示；测试结果在触摸屏28-1的检测结果显示窗口实时显示。
本实施例中，第一单片机处理模块25的核心器件优选MSP430F149型号的单片机；第二单片机处理模块28-2的核心器件优选采用S3C6410型号的ARM11嵌入式微处理器。
前述的一次侧单元1的激励电源模块11用于产生A相、B相和C相的频率为60Hz、电压峰峰值为330V、占空比为25％的脉冲电压；无线通信模块13用于通过无线通信接收二次侧单元2的控制命令并送给控制模块12，由控制模块12控制激励电源模块11相应产生A相、B相或C相的脉冲电压。
二次侧单元2的减法器21采集四星形电压互感器二次侧的电压值并传输给运算放大模块22，运算放大模块22将脉冲电压负值转化为正值，以方便AD采集模块24采集；限幅电路模块23用于将脉冲电压负值限制在AD采集模块24的数据采集范围之内；第一单片机处理模块25用于处理采集的电压数据并通过第一RS232通信模块 26和手持终端28的第二RS232通信模块28-3传输给手持终端28的第二单片机处理模块28-2进行判定；第一单片机处理模块25还用于通过第二单片机处理模块28-2和第二RS232通信模块28-3接收触摸屏28-1所发的命令并经第二无线通信模块27发送给一次侧单元1的无线通信模块13；手持终端28的触摸屏28-1用于测试人员手动操控并实时显示测试状态和测试结果；第二单片机处理模块28-2用于依设定的判据对采集的数据进行判定并将判定结果发给触摸屏28-1实时显示。
参见图6，本实施例的四星型电压互感器智能极性检测装置，其用于检测四星形电压互感器3二次侧极性的检测方法，主要包括以下步骤：
①接线：将一次侧单元1的第一至第三脉冲电压输出端与四星形电压互感器3的一次侧的A相、B相和C相输入端对应电连接；将二次侧单元2的第一至第五输入端分别与四星形电压互感器3的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端对应电连接后，加电；
②按下触摸屏28-1上的“建立连接”按钮；接着按下“开始测量”按钮；然后按下A相测试命令按钮PWM_A，对四星形电压互感器3的A相进行检测；
③一次侧单元1通过无线通信接收到二次侧触摸屏28-1所发的A相测试命令后，控制器12控制激励电源模块11产生占空比为25％、电压峰值为330V、频率为60Hz的脉冲电压施加于四星形电压互感器3的一次侧；
④二次侧单元2采集四星形电压互感器3的二次侧输出的电压，经处理后发送给手持终端28的第二单片机处理模块28-2进行判定；第二单片机处理模块28-2内设的判据为：若未采集到电压信号，判定四星形电压互感器3的二次侧相序接反；若二次侧采集的脉冲电压的占空比为25％，判定极性正确；若二次侧采集的脉冲电压的占空比为75％，判定极性错误；并将判定结果实时发送给触摸屏28-1显示；
⑤依步骤②至步骤④相同的方法对对四星形电压互感器3的B相和C相进行检测。
以上实施例是对本发明的具体实施方式的说明，而非对本发明的限制，有关技术领域的技术人员在不脱离本发明的精神和范围的情况下，还可以做出各种变换和变化而得到相对应的等同的技术方案，因此所有等同的技术方案均应该归入本发明的专利保护范围。
工业应用性
本发明具有积极的效果：(1)本发明的四星型电压互感器智能极性检测装置，其在使用时，只需要将一次侧单元和二次侧单元分别与被测的四星型电压互感器进行一 次性的接线即可，无需频繁拆线、接线，从而可大幅度地提高工作效率，降低工作人员的作业风险。
(2)本发明的四星型电压互感器智能极性检测装置，其在使用时，检测人员只需要通过操作二次侧单元的手持设备的触摸屏即可自动完成整个检测过程，且检测结果在触摸屏上直观显示，对操作者的专业知识要求不高，即使没有专业经验的工作者，亦可顺利完成整个检测，适用性强。
(3)本发明的四星型电压互感器智能极性检测装置，结构简单，操作方便。
(4)本发明的四星型电压互感器智能极性检测装置的检测方法，采用占空比判据对四星型电压互感器二次侧的极性进行判定，逻辑简单，判定的结果可靠性高。

Claims (7)

  1. 一种四星型电压互感器智能极性检测装置，包括四星形电压互感器(3)；所述的四星形电压互感器(3)的一次侧具有A相、B相和C相电压输入端；四星形电压互感器(3)的二次侧具有a相接线端、b相接线端、C相接线端、l接线端和n接线端；其特征在于：还包括一次侧单元(1)和二次侧单元(2)；
    所述的一次侧单元(1)设有电源输入端、第一至第三脉冲电压输出端和无线通信端；二次侧单元(2)设有第一至第五输入端和无线通信端；使用时，一次侧单元(1)的电源输入端接220V交流电；一次侧单元(1)的第一至第三脉冲电压输出端分别与四星形电压互感器(3)的一次侧的A相、B相和C相电压输入端对应电连接；四星形电压互感器(3)的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端分别与二次侧单元(2)的第一至第五输入端对应电连接；一次侧单元(1)的无线通信端和二次侧单元(2)的无线通信端通信；一次侧单元(1)的第一至第三脉冲电压输出端分别输出频率为60Hz、电压峰峰值为330V、占空比为25％的脉冲电压。
  2. 根据权利要求1所述的四星型电压互感器智能极性检测装置，其特征在于：所述的一次侧单元(1)包括激励电源模块(11)、控制模块(12)和无线通信模块(13)；激励电源模块(11)包括隔离变压器(11-1)、整流滤波模块(11-2)和脉冲电压产生模块(11-3)；
    所述的隔离变压器(11-1)和整流滤波模块(11-2)分别设有电源输入端和电源输出端；脉冲电压产生模块(11-3)设有电源输入端、第一至第三脉冲电压输出端和脉冲电压产生控制信号输入端；控制模块(12)设有控制信号输入端和控制信号输出端；无线通信模块(13)设有控制信号输入端和信号输出端；
    隔离变压器(11-1)的电源输入端即为所述的一次侧单元(1)的电源输入端；整流滤波模块(11-2)的电源输入端与隔离变压器(11-1)的电源输出端电连接；脉冲电压产生模块(11-3)的电源输入端与整流滤波模块(11-2)的电源输出端电连接；脉冲电压产生模块(11-3)的第一至第三脉冲电压输出端即为所述的一次侧单元(1)的第一至第三脉冲电压输出端；脉冲电压产生模块(11-3)的脉冲电压产生控制信号输入端与控制模块(12)的控制信号输出端信号电连接；控制模块(12)的控制信号输入端与无线通信模块(13)的信号输出端信号电连接；无线通信模块(13)的控制信号输入端即为所述的一次侧单元(1)的无线通信端。
  3. 根据权利要求2所述的四星型电压互感器智能极性检测装置，其特征在于： 所述的激励电源模块(11)包括隔离变压器T1、整流桥D1、滤波电容C1、电阻R1、电阻R2、电阻R3、第一MOS管G1、第二MOS管G2和第三MOS管G3；
    隔离变压器T1即为所述的隔离变压器(11-1)；整流桥D1和滤波电容C1构成所述的整流滤波模块(11-2)；电阻R1和第一MOS管G1、电阻R2和第二MOS管G2以及电阻R3和第三MOS管G3分别构成A相、B相和C相脉冲电压产生电路且共同构成所述的脉冲电压产生模块(11-3)；第一MOS管G1的漏极、第二MOS管G2的漏极和第三MOS管G3的漏极即为所述的脉冲电压产生模块(11-3)的第一至第三脉冲电压输出端，也即一次侧单元(1)的第一至第三脉冲电压输出端；第一MOS管G1的栅极、第二MOS管G2的栅极和第三MOS管G3的栅极共同构成所述的脉冲电压产生模块(11-3)的脉冲电压产生控制信号输入端。
  4. 根据权利要求1所述的四星型电压互感器智能极性检测装置，其特征在于：所述的二次侧单元(2)包括减法器(21)、运算放大模块(22)、限幅电路模块(23)、AD采集模块(24)、第一单片机处理模块(25)、第一RS232通信模块(26)、第二无线通信模块(27)和手持终端(28)；手持终端(28)包括触摸屏(28-1)、第二单片机处理模块(28-2)和第二RS232通信模块(28-3)；
    所述的减法器(21)设有第一至第五输入端和第一至第四输出端；运算放大模块(22)和限幅电路模块(23)分别设有第一至第四输入端和第一至第四输出端；AD采集模块(24)设有第一至第四输入端和采集信号输出端；第一单片机处理模块(25)设有采集信号输入端、控制信号输出端和通信端；第一RS232通信模块(26)设有第一通信端和第二通信端；第二无线通信模块(27)设有控制信号输入端和控制信号输出端；手持终端(28)的触摸屏(28-1)设有通信端；第二单片机处理模块(28-2)和第二RS232通信模块(28-3)分别设有第一通信端和第二通信端；
    所述的减法器(21)的第一至第五输入端即为所述的二次侧单元(2)的第一至第五输入端；运算放大模块(22)的第一至第四输入端分别与减法器(21)的第一至第四输出端对应电连接；限幅电路模块(23)的第一至第四输入端分别与运算放大模块(22)的第一至第四输出端对应电连接；AD采集模块(24)的第一至第四输入端分别与限幅电路模块(23)的第一至第四输出端对应电连接；第一单片机处理模块(25)的采集信号输入端与AD采集模块(24)的采集信号输出端信号电连接；第一单片机处理模块(25)的通信端与第一RS232通信模块(26)的第一通信端双向信号电连接；第二无线通信模块(27)的控制信号输入端与第 一单片机处理模块(25)的控制信号输出端信号电连接；第二无线通信模块(27)的控制信号输出端即为所述的二次侧单元(2)的无线通信端；
    手持终端(28)的触摸屏(28-1)的通信端与第二单片机处理模块(28-2)的第一通信端双向信号电连接；第二单片机处理模块(28-2)的第二通信端与第二RS232通信模块(28-3)的第一通信端双向信号电连接；第二RS232通信模块(28-3)的第二通信端与第一RS232通信模块(26)的第二通信端双向信号电连接。
  5. 根据权利要求4所述的四星型电压互感器智能极性检测装置，其特征在于：所述的二次侧单元(2)的手持终端(28)的触摸屏(28-1)的界面上设置有“建立连接”按钮、“开始测量”按钮、A相测试命令按钮PWM_A、B相测试命令按钮PWM_B、C相测试命令按钮PWM_C、检测结果显示窗口和检测状态显示窗口。
  6. 根据权利要求4所述的四星型电压互感器智能极性检测装置，其特征在于：所述的二次侧单元(2)的第一单片机处理模块(25)的核心器件为MSP430F149型号的单片机；第二单片机处理模块(28-2)的核心器件优选为S3C6410型号的ARM11嵌入式微处理器。
  7. 一种根据权利要求5所述的四星型电压互感器智能极性检测装置，其特征在于：其用于检测四星形电压互感器(3)的检测方法，包括以下步骤：
    ①接线：将一次侧单元(1)的第一至第三脉冲电压输出端与四星形电压互感器(3)的一次侧的A相、B相和C相输入端对应电连接；将二次侧单元(2)的第一至第五输入端分别与四星形电压互感器(3)的二次侧的a相接线端、b相接线端、C相接线端、l接线端和n接线端对应电连接后，加电；
    ②按下触摸屏(28-1)上的“建立连接”按钮；接着按下“开始测量”按钮；然后按下A相测试命令按钮PWM_A，对四星形电压互感器(3)的A相进行检测；
    ③一次侧单元(1)通过无线通信接收到二次侧触摸屏(28-1)所发的A相测试命令后，一次侧单元(1)输出占空比为25％、电压峰值为330V、频率为60Hz的脉冲电压施加于四星形电压互感器(3)的一次侧；
    ④二次侧单元(2)采集四星形电压互感器(3)的二次侧输出的电压，经处理后发送给手持终端(28)的第二单片机处理模块(28-2)进行判定；第二单片机处理模块(28-2)内设的判据为：
    若未采集到电压信号，判定四星形电压互感器(3)的二次侧相序接反；
    若二次侧采集的脉冲电压的占空比为25％，判定极性正确；
    若二次侧采集的脉冲电压的占空比为75％，判定极性错误；
    并将判定结果实时发送给触摸屏28-1显示；
    ⑤依步骤②至步骤④相同的方法对对四星形电压互感器(3)的B相和C相进行检测。
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CN106771837A (zh) * 2016-12-23 2017-05-31 国网山东省电力公司菏泽供电公司 一种电流互感器远程极性测试仪
CN108594157A (zh) * 2018-06-12 2018-09-28 国网新疆电力有限公司伊犁供电公司 互感器二次极性快速检测装置
CN108898914A (zh) * 2018-08-16 2018-11-27 广东电网有限责任公司 一种电流电压互感器二次回路故障仿真装置
CN109752628A (zh) * 2019-01-15 2019-05-14 国网辽宁省电力有限公司鞍山供电公司 一种基于嵌入式rtu的多功能互感器极性试验仪
CN110118893A (zh) * 2019-05-30 2019-08-13 山东公信安全科技有限公司 一种高压电网单相接地电容电流测试装置
CN110542878A (zh) * 2018-05-28 2019-12-06 广东电网有限责任公司 一种具有充电功能的cvt电压带电监测装置
CN111751766A (zh) * 2020-06-28 2020-10-09 深圳供电局有限公司 一种主变压器套管电流互感器极性检测方法
CN112415435A (zh) * 2020-10-29 2021-02-26 云南电网有限责任公司 一种并联电抗器保护装置二次回路的检测方法
CN112731191A (zh) * 2020-12-08 2021-04-30 北京无线电测量研究所 一种用于脉冲电源的自动测试台
CN113722264A (zh) * 2021-08-24 2021-11-30 深圳市京泉华智能电气有限公司 一种单片机之间的通信方法
CN113759288A (zh) * 2021-11-08 2021-12-07 深圳市德兰明海科技有限公司 一种漏电流检测电路、方法及漏电流检测器

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CN106771837B (zh) * 2016-12-23 2023-07-18 国网山东省电力公司菏泽供电公司 一种电流互感器远程极性测试仪
CN106771837A (zh) * 2016-12-23 2017-05-31 国网山东省电力公司菏泽供电公司 一种电流互感器远程极性测试仪
CN110542878A (zh) * 2018-05-28 2019-12-06 广东电网有限责任公司 一种具有充电功能的cvt电压带电监测装置
CN108594157A (zh) * 2018-06-12 2018-09-28 国网新疆电力有限公司伊犁供电公司 互感器二次极性快速检测装置
CN108898914A (zh) * 2018-08-16 2018-11-27 广东电网有限责任公司 一种电流电压互感器二次回路故障仿真装置
CN109752628A (zh) * 2019-01-15 2019-05-14 国网辽宁省电力有限公司鞍山供电公司 一种基于嵌入式rtu的多功能互感器极性试验仪
CN109752628B (zh) * 2019-01-15 2024-03-19 国网辽宁省电力有限公司鞍山供电公司 一种基于嵌入式rtu的多功能互感器极性试验仪
CN110118893A (zh) * 2019-05-30 2019-08-13 山东公信安全科技有限公司 一种高压电网单相接地电容电流测试装置
CN110118893B (zh) * 2019-05-30 2024-03-29 中检集团公信安全科技有限公司 一种高压电网单相接地电容电流测试装置
CN111751766A (zh) * 2020-06-28 2020-10-09 深圳供电局有限公司 一种主变压器套管电流互感器极性检测方法
CN112415435B (zh) * 2020-10-29 2024-01-19 云南电网有限责任公司 一种并联电抗器保护装置二次回路的检测方法
CN112415435A (zh) * 2020-10-29 2021-02-26 云南电网有限责任公司 一种并联电抗器保护装置二次回路的检测方法
CN112731191A (zh) * 2020-12-08 2021-04-30 北京无线电测量研究所 一种用于脉冲电源的自动测试台
CN113722264A (zh) * 2021-08-24 2021-11-30 深圳市京泉华智能电气有限公司 一种单片机之间的通信方法
CN113722264B (zh) * 2021-08-24 2024-03-15 深圳市京泉华智能电气有限公司 一种单片机之间的通信方法
CN113759288A (zh) * 2021-11-08 2021-12-07 深圳市德兰明海科技有限公司 一种漏电流检测电路、方法及漏电流检测器

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