Test platform for distribution network primary and secondary fusion complete switch equipment

Abstract

The utility model discloses a test platform used for distribution network primary and secondary fusion complete switch equipment, the test platform is composed of a control cabinet, a power output cabinet, a primary test cabinet, a secondary test cabinet, a boost and current rise cabinet and a test management system, the test management system comprises a complete test system, a primary test system and a secondary test system, information interaction is carried out between the test management system and the primary and secondary fusion complete equipment through a standard communication interface. According to the technical scheme, accuracy measurement of voltage, current, power, frequency and wave recording of complete equipment of a tested object is realized through an adjustable three-phase power supply. According to the technical scheme, the 10kV test voltage and the 800A alternating current can be applied at the same time, the implementation test of the network access detection test of the primary and secondary fusion complete switch equipment of the power distribution network can be solved, and the guarantee can be provided for the safe operation of the power distribution network.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical test technical field, more specifically, relate to a kind of test platform for distribution network primary-secondary fusion integrated switchgear. BACKGROUND

[0002] With the continuous promotion of distribution network primary-secondary fusion special work, domestic power grid enterprises complete and issue a number of equipment class technical standards and test specifications, effectively promote the distribution network equipment function integration and technical depth fusion.Distribution network equipment test is an important work to ensure equipment quality and improve the reliability of distribution network operation.Distribution equipment should also experience type test, factory test, network test and field test before being put into operation.The corresponding distribution equipment test is continuously exploring and researching high-quality and high-efficiency test technology because of the large number of distribution equipment and the large number of models.However, because of the lack of special equipment, the current detection is carried out by scattered detection instruments through manual test, and the automation level is low;Test efficiency is low, and it is difficult to meet the demand of ring network box detection;Test personnel have high labor intensity, high professional requirements and easy to make mistakes, and the objectivity of test results is sometimes difficult to guarantee.

[0003] Therefore, it is necessary to study a test method for distribution network primary-secondary fusion integrated equipment to meet the performance test and function test of primary-secondary fusion integrated equipment. UTILITY MODEL CONTENT

[0004] Utility model purpose: in order to solve the above problems, the utility model summarizes a kind of test platform for distribution network primary-secondary fusion integrated switchgear, which can automatically complete the integrated test of primary-secondary fusion integrated equipment, support primary voltage, current transient jump transient drop, support reading switch whole action time, support large current live cutting and support triggering grounding fault waveform.

[0005] Technical scheme: in order to realize the above utility model purpose, the utility model provides a kind of test platform for distribution network primary-secondary fusion integrated switchgear, which is applied to the test of primary-secondary fusion integrated switchgear, and characterized by: the test platform is composed of control cabinet, power output cabinet, primary test cabinet, secondary test cabinet, voltage and current booster cabinet and test management system, the test management system includes integrated test system, primary test system and secondary test system, and the test management system and primary-secondary fusion integrated equipment are connected through standard communication interface for information exchange.

[0006] The test platform further includes signal source, power amplifier system, current booster, voltage booster transformer, standard mutual inductor, standard meter / recording wave device, standard electric energy meter, error calculator, communication equipment, two-dimensional code scanning gun, mutual inductor calibrator, mutual inductor load box, switch control device and primary-secondary fusion distribution terminal detector.

[0007] The test management system includes test personnel permission management, test case configuration, storage and calling, sample information automatic input, function and performance automatic test flow control, test result collection, comparison and test report automatic generation control.

[0008] The signal source is used to generate standard output signals of current and voltage with adjustable amplitude, phase and frequency, and can realize steady-state output, state sequence, waveform inversion output according to test needs, or accept the output signals of the RTDS system as the basic signal source to realize signal amplification output.

[0009] The power amplification system realizes power amplification of the output signals of the signal source, and is composed of a voltage power amplification system and a current function amplification system, and the amplified signals are used to drive the voltage and current booster;

[0010] The booster realizes isolation and amplification of the current to simulate the primary current of the 10KV distribution line;

[0011] The voltage booster transformer realizes isolation and amplification of the voltage to simulate the primary voltage of the 10KV distribution line;

[0012] The standard transformer includes high-precision voltage and current transformers to realize accurate sensing of the primary side current and voltage;

[0013] The standard meter / wave recorder is used to collect the signals of the standard transformer, realize accurate collection of the output voltage and current amplitude and waveform, and realize testing of the voltage and current accuracy, steady-state wave recording accuracy and transient-state wave recording accuracy as the comparison reference;

[0014] The standard electric energy meter generates standard electric energy pulses and clock pulses as the verification reference of the line loss module;

[0015] The error calculator realizes error calculation of the line loss module and the standard electric energy meter;

[0016] The communication device is used for internal communication of the system and communication with the test product;

[0017] The two-dimensional code scanning gun is used for inputting device information.

[0018] The transformer verifier realizes testing of the transformer ratio difference and angle difference during testing of the primary equipment;

[0019] The transformer load box realizes load testing of the transformer during testing of the primary equipment;

[0020] The switch control device realizes transmission testing of the switch during testing of the primary equipment, and realizes testing of the switch action time and control loop current.

[0021] The primary and secondary fusion power distribution terminal detector realizes function and performance detection of secondary equipment, and comprises an electronic / magnetic standard source, an electronic / magnetic standard meter / recording wave device, an AC adjustable voltage stabilizing source, a power supply / power consumption testing device, a state quantity simulator, a control output indicator and an electronic load, wherein: the electronic / magnetic standard source realizes simulation of the output of an electronic or magnetic transformer so as to test analog quantity acquisition of the power distribution terminal; the electronic / magnetic standard meter / recording wave device realizes accurate acquisition of output voltage, current amplitude and waveform, and serves as a reference for testing voltage and current accuracy, steady-state recording accuracy and transient-state recording accuracy; the AC adjustable voltage stabilizing source realizes power supply of the power distribution terminal and power supply influence testing; the power supply / power consumption testing device realizes testing of main and standby power and power consumption; the state quantity simulator simulates switch state and realizes function and performance testing of remote signaling acquisition of the power distribution terminal; the control output indicator acquires control output of the power distribution terminal and realizes function and performance testing of the control output; and the electronic load realizes power supply load capacity testing of the power distribution terminal.

[0022] The implementation of the utility model needs test management system, signal source, power amplification system, current booster, step-up transformer, standard transformer, standard meter / recording wave device, standard electric energy meter, error calculator, communication equipment, two-dimensional code scanning gun and line loss module electric energy pulse;

[0023] The test method of the utility model is as follows:

[0024] A. The two-dimensional code scanning gun reads information on the two-dimensional code on the nameplate of the complete equipment and establishes a test file;

[0025] B. The test management system exchanges information with the control equipment of the primary and secondary fusion complete equipment through the communication equipment, and the test management system sends instructions to the signal source according to the test requirements by configuring a test scheme;

[0026] C. After the power amplification system receives the digital voltage signal of the signal source, the digital signal is converted into an analog voltage signal and output to the step-up transformer, and the analog voltage signal after step-up is output to the primary side voltage transformer of the primary and secondary fusion complete equipment;

[0027] D. After the power amplification system receives the digital current signal of the signal source, the digital signal is converted into an analog current signal and output to the current booster, and the analog current signal after step-up is output to the primary side current transformer of the primary and secondary fusion complete equipment;

[0028] E. The test management system simultaneously sends voltage and current control signals to the signal source to control the step-up booster to apply voltage and current to the primary and secondary fusion complete equipment;

[0029] F, the standard transformer applies voltage and current to the primary and secondary fusion complete set of equipment, and inputs to the standard meter / recorder, the standard meter / recorder realizes accurate collection of output voltage, current amplitude and waveform, and realizes voltage and current precision, steady-state recording precision and transient recording precision test as a comparison reference to complete transformer precision and recording function performance test;

[0030] G, the standard electric energy meter collects the current and voltage signals of the standard transformer and inputs the pulse signals output by the line loss module of the control equipment into the error calculator, and after calculation, the error measurement of the line loss module can be realized.

[0031] Beneficial effects: compared with the prior art, the beneficial effects of the utility model are as follows:

[0032] (1) the technical scheme can realize accurate measurement of voltage, current, power, frequency and recording of the complete set of equipment of the test product through the adjustable three-phase power supply.

[0033] (2) the output power of the technical scheme can reach 8000kVA, which can fully meet the test requirements of the 10kV primary and secondary fusion complete set of switchgear.

[0034] (3) the technical scheme can simultaneously output three-phase voltage and current with a phase angle difference of 0-360°, can simulate single-phase fault and phase-to-phase fault, and can also simulate intra-zone fault and extra-zone fault.

[0035] (4) the technical scheme can simultaneously apply a test voltage of 10kV and an alternating current of 800A, can solve the implementation method of the grid connection test of the primary and secondary fusion complete set of switchgear of the distribution network, and can provide protection for the safe operation of the distribution network. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the utility model.

[0037] Figure 2 It is a complete set of equipment measurement flowchart in the utility model.

[0038] Figure 3 It is a primary equipment measurement flowchart in the utility model.

[0039] Figure 4 It is a secondary equipment measurement flowchart in the utility model. DETAILED DESCRIPTION

[0040] The technical scheme will be described in detail below through an optimal embodiment, but the protection scope of the utility model is not limited to the embodiment.

[0041] For example, Figure 1As shown, a test platform for a primary and secondary fusion complete switch device is applied to the test of the primary and secondary fusion complete switch device, and includes a control cabinet 1, a power output cabinet 2, a primary test cabinet 3, a voltage and current boosting cabinet 4, and a secondary test cabinet 5. The control cabinet 1 runs a primary and secondary fusion automatic test system software as a control center of the whole test system, and is used for test management, result comparison, and report generation. The power output cabinet 2 includes a signal source, three current power amplifiers, and a voltage power amplifier, and is used to realize power amplification of the signal source output. The primary test cabinet 3 is composed of a mutual inductor verification instrument, a voltage, a current, a zero sequence, a power supply load box, and a switch control device, and is mainly used for the control of the primary switch, the accuracy of the primary switch, and the test of the action voltage and the action time. The voltage and current boosting cabinet 4 has three phases ABC, and has a voltage boosting transformer and a current booster in the cabinet. The secondary test cabinet 5 is composed of a power distribution terminal tester, a direct current power supply, a programmable alternating current power supply, and an electronic load, and can perform three remote, communication, logic judgment, power supply test, and fault test of the power distribution terminal.

[0042] The test management system and the primary and secondary fusion complete device exchange information through a standard communication interface;

[0043] The test platform further includes a signal source, a power amplification system, a current booster, a voltage boosting transformer, a standard mutual inductor, a standard meter / recording wave device, a standard electric energy meter, an error calculator, a communication device, a two-dimensional code scanning gun, a mutual inductor verification instrument, a mutual inductor load box, a switch control device, and a primary and secondary fusion power distribution terminal tester.

[0044] The test management system includes test personnel permission management, test case configuration, storage, and calling, sample information automatic input, function and performance automatic test process control, test result collection, comparison, and test report automatic generation control.

[0045] The signal source is used to generate a standard output signal of a current and a voltage with adjustable amplitude, phase, and frequency, and can realize steady-state output, state sequence, and waveform inversion output according to the test requirement, or accept the output signal of an RTDS system as a basic signal source to realize signal amplification output;

[0046] The power amplification system realizes power amplification of the signal source output signal, and is composed of a voltage power amplification system and a current function amplification system. The amplified signal is used to drive the voltage and current booster.

[0047] The current booster realizes isolation and amplification of the current to simulate the primary current of a 10KV power distribution line.

[0048] The voltage boosting transformer realizes isolation and amplification of the voltage to simulate the primary voltage of a 10KV power distribution line.

[0049] The standard transformer includes high-precision voltage and current transformers, and realizes accurate sensing of primary-side current and voltage;

[0050] The standard meter / wave recorder is used for collecting signals of the standard transformer, realizes accurate collection of output voltage and current amplitudes and waveforms, and realizes testing of voltage and current accuracy, steady-state recording accuracy and transient-state recording accuracy as a comparison reference;

[0051] The standard electric energy meter generates standard electric energy pulses and clock pulses as a test reference of the line loss module;

[0052] The error calculator realizes error calculation of the line loss module and the standard electric energy meter;

[0053] The communication device is used for internal communication of the system and communication with the test object;

[0054] The two-dimensional code scanning gun is used for inputting device information;

[0055] The transformer calibrator realizes testing of transformer ratio difference and angle difference when testing primary equipment;

[0056] The transformer load box realizes load testing of the transformer when testing primary equipment;

[0057] The switch control device realizes transmission testing of the switch when testing primary equipment, and realizes testing of switch action time and control loop current.

[0058] The primary and secondary fusion power distribution terminal detector realizes function and performance testing of secondary equipment, and includes electronic / magnetic standard source, electronic / magnetic standard meter / wave recorder, AC adjustable voltage source, power source / power consumption testing device, state quantity simulator, control output indicator and electronic load, wherein:

[0059] The electronic / magnetic standard source realizes simulation of electronic or magnetic transformer output, so as to test analog quantity collection of the power distribution terminal;

[0060] The electronic / magnetic standard meter / wave recorder realizes accurate collection of output voltage and current amplitudes and waveforms, and realizes testing of voltage and current accuracy, steady-state recording accuracy and transient-state recording accuracy as a comparison reference;

[0061] The AC adjustable voltage source realizes power supply and power source influence testing of the power distribution terminal;

[0062] The power source / power consumption testing device realizes testing of main and standby power and power consumption;

[0063] The state quantity simulator simulates switch state, realizes remote signaling collection function and performance testing of the power distribution terminal;

[0064] Control output indicator: collect the control output of the power distribution terminal, realize the test of the control output function and performance;

[0065] Electronic load: realize the test of the power supply load capacity of the power distribution terminal.

[0066] A test method for a test platform of a primary and secondary integrated complete switchgear, the implementation of the test method needs a test management system, a signal source, a power amplification system, a current booster, a step-up transformer, a standard mutual inductor, a standard meter / wave recorder, a standard electric energy meter, an error calculator, communication equipment, a two-dimensional code scanning gun, and a line loss module electric energy pulse;

[0067] The test method of the utility model is as follows:

[0068] A, the two-dimensional code scanning gun reads information by scanning the two-dimensional code on the nameplate of the complete equipment, and establishes a test file;

[0069] B, the test management system interacts with the control equipment of the primary and secondary integrated complete equipment through communication equipment, and the test management system sends instructions to the signal source according to the test needs by configuring the test scheme;

[0070] C, after the power amplification system receives the digital voltage signal of the signal source, the digital signal is converted into an analog voltage signal, which is output to the step-up transformer, and the analog voltage signal after the step-up is output to the primary side voltage mutual inductor of the primary and secondary integrated complete equipment;

[0071] D, after the power amplification system receives the digital current signal of the signal source, the digital signal is converted into an analog current signal, which is output to the current booster, and the analog current signal after the step-up is output to the primary side current mutual inductor of the primary and secondary integrated complete equipment;

[0072] E, the test management system sends voltage and current control signals to the signal source at the same time to control the step-up and step-up current booster to apply voltage and current to the primary and secondary integrated complete equipment;

[0073] F, after the standard mutual inductor samples the voltage and current applied to the primary and secondary integrated complete equipment and inputs it to the standard meter / wave recorder, the standard meter / wave recorder realizes accurate collection of output voltage, current amplitude and waveform, and realizes test of voltage and current precision, steady-state recording precision and transient-state recording precision as a comparison reference to complete mutual inductor precision and recording function performance test;

[0074] G, the current and voltage signals collected by the standard electric energy meter and the pulse signal output by the line loss module of the control equipment are input into the error calculator, and the error measurement of the line loss module can be realized after calculation.

[0075] As Figure 2As shown in the diagram, the measurement process for the complete set of equipment involves a QR code scanner that scans the QR code on the equipment's nameplate to create a test file. The test management system interacts with the control equipment of the integrated primary and secondary equipment via communication devices. The test management system sends commands to the signal source according to test requirements. The power amplification system receives the digital voltage signal from the signal source, converts it into an analog voltage signal, outputs it to the step-up transformer, and then outputs the stepped-up analog voltage signal to the primary side voltage transformer of the integrated primary and secondary equipment. Similarly, the power amplification system receives the digital current signal from the signal source, converts it into an analog current signal, outputs it to the current booster, and then outputs the stepped-up analog current signal to the primary side current transformer of the integrated primary and secondary equipment. The test management system simultaneously sends voltage and current control signals to the signal source to control the booster transformer to apply voltage and current to the integrated primary and secondary equipment. The standard instrument transformer samples the applied voltage and current from the integrated primary and secondary equipment and inputs it to the standard meter / recording device. The standard meter / recording device accurately acquires the output voltage, current amplitude, and waveform, and uses this as a benchmark to test the accuracy of voltage and current, steady-state recording accuracy, and transient recording accuracy, thus completing the accuracy and recording function performance test of the instrument transformer. The current and voltage signals acquired by the standard energy meter from the standard instrument transformer, along with the pulse signal output from the line loss module of the control equipment, are input to an error calculator. After calculation, the error of the line loss module can be measured.

[0076] like Figure 3 As shown in the diagram, the primary equipment measurement flowchart illustrates the following: The instrument transformer calibrator receives signals from the standard instrument transformer and the instrument transformer under test, and then tests the accuracy of the primary voltage, current, zero-sequence voltage, and zero-sequence current. The voltage transformer load box adds the required load to the voltage transformer according to actual needs, testing the transformer's accuracy under load. The current transformer load box adds the required load to the current transformer according to actual needs, testing the transformer's accuracy under load. The zero-sequence transformer load box adds the required load to the zero-sequence transformer according to actual needs, testing the transformer's accuracy under load. The switch operating device tests the primary switch's energy storage voltage, operating time, and operating current, and can also control the primary switch's operation and acquire position signals.

[0077] like Figure 4 As shown in the diagram, the secondary equipment measurement flowchart illustrates that the test management system communicates with the integrated primary and secondary power distribution terminal via standard protocol 104 or 101. After inputting analog voltage and current signals to the power distribution terminal, the test management system collects the standard meter readings and the terminal readings, automatically compares and records them, and determines whether the accuracy requirements are met. The test management system inputs a state sequence to the power distribution terminal; after the state sequence flips, it begins recording the SOE event messages and switch quantity changes sent by the terminal, and makes a judgment on whether the predetermined results are met.

[0078] The test task scheme of the primary and secondary fusion system is set by testing the test scheme configured in advance by the test management system, and a corresponding test report template of the primary and secondary fusion system is generated. By operating the test management system, the specific test scheme configured is opened, and the test work is started. Different test projects are tested by using different test indexes. After the test management system is started, the output format of the primary system voltage and current signals is an Ethernet data frame that meets the standard, and the information of the secondary system protection device is output in the form of a message. When the test system can receive the message information of the primary system, the action signal of the secondary system protection device is analyzed, the basic function test and interface communication performance test of the primary and secondary fusion system in the test scheme are tested and verified, thereby forming a closed-loop test system of the power distribution network primary and secondary fusion system. In the test process of the test platform, the abnormal conditions that may exist in the test process are analyzed and judged. If there is an abnormal phenomenon in the test process, the previous test process needs to be adjusted, and when the abnormality is excluded, the previous test process is executed again. When it is detected that the test task has been completed, the test platform control center reads and saves the test result data, judges whether the current test result meets the qualified standard, and finally writes the test result into the prepared report template to generate a test report that meets the requirements.

Claims

1. A test platform for primary and secondary fusion integrated switchgear, applied to the test of primary and secondary fusion integrated switchgear, characterized in that: The test platform is composed of a control cabinet, a power output cabinet, a primary test cabinet, a secondary test cabinet, a voltage and current booster cabinet and a test management system, the test management system comprises a complete test system, a primary test system and a secondary test system, and the test management system and the primary and secondary integrated complete equipment are connected through a standard communication interface to realize information interaction; The test platform further comprises a signal source, a power amplification system, a current booster, a voltage booster transformer, a standard mutual inductor, a standard meter / wave recorder, a standard electric energy meter, an error calculator, a communication device, a two-dimensional code scanning gun, a mutual inductor calibrator, a mutual inductor load box, a switch control device and a primary and secondary integrated power distribution terminal detector.

2. The test platform for the primary and secondary fusion complete switch device of the network distribution according to claim 1, characterized in that: The test management system comprises test personnel permission management, test case configuration, storage and calling, sample information automatic input, function and performance automatic test process control, test result collection, comparison and test report automatic generation control.

3. The test platform for the primary and secondary fusion switchgear assembly of claim 1, wherein: The signal source is used to generate standard output signals of current and voltage with adjustable amplitude, phase and frequency, and can realize steady-state output, state sequence and waveform inversion output according to test requirements, or can accept the output signals of the RTDS system as basic signal sources to realize signal amplification output; The power amplification system realizes power amplification of the output signals of the signal source, and is composed of a voltage power amplification system and a current function amplification system, and the amplified signals are used to drive the voltage and current booster; The current booster realizes isolation and amplification of current to simulate primary current of a 10KV power distribution line; The voltage booster transformer realizes isolation and amplification of voltage to simulate primary voltage of a 10KV power distribution line; The standard mutual inductor comprises high-precision voltage and current mutual inductors, and realizes accurate sensing of primary side current and voltage; The standard meter / wave recorder is used to collect signals of the standard mutual inductor, realizes accurate collection of output voltage and current amplitude and waveform, and realizes test of voltage and current accuracy, steady-state wave recording accuracy and transient-state wave recording accuracy by taking the collected signals as a comparison reference; The standard electric energy meter generates standard electric energy pulses and clock pulses as a test reference of a line loss module; The error calculator realizes error calculation of the line loss module and the standard electric energy meter; The communication device is used for internal communication of the system and communication with a test product; The two-dimensional code scanning gun is used for input of device information; The mutual inductor calibrator realizes test of mutual inductor difference and angle difference during primary device test; The mutual inductor load box realizes load test of the mutual inductor during primary device test; The switch control device realizes transmission test of the switch during primary device test, and realizes test of switch action time and control loop current.

4. The test platform for the primary and secondary fusion switchgear assembly of claim 1, wherein: The primary and secondary integrated power distribution terminal detector realizes function and performance test of secondary devices, and comprises an electronic / magnetic standard source, an electronic / magnetic standard meter / wave recorder, an AC adjustable voltage stabilizer, a power supply / power consumption test device, a state quantity simulator, a control output indicator and an electronic load, wherein: The electronic / magnetic standard source realizes simulation of outputs of electronic or magnetic mutual inductors to test analog quantity collection of the power distribution terminal. Electronic / Electromagnetic standard table / wave recorder: Realize accurate collection of output voltage, current amplitude and waveform, and realize test of voltage and current accuracy, steady-state recording accuracy and transient recording accuracy as the reference for comparison. AC adjustable voltage regulator: Realize power supply of distribution terminal and power supply influence test. Power supply / power consumption test device: Realize test of main and standby power and power consumption. State quantity simulator: Simulate switch state, realize remote signaling collection function and performance test of distribution terminal. Control output indicator: Collect control output of distribution terminal, realize test of control output function and performance. Electronic load: Realize power carrying capacity test of power supply of distribution terminal.

Images