Test platform for arc suppression coil complete equipment function detection and operation method thereof

Abstract

The invention discloses a test platform for arc suppression coil complete equipment function detection and an operation method thereof. The test platform comprises an adjustable transformer which is used for achieving the on-load and continuous adjustment of the output voltage of the test platform, a debugging and testing capacitor bank which is used for simulating system ground capacitance, a compensation capacitor bank which is used for assisting in increasing the total capacity of the test platform, a first change-over switch which is used for realizing the series test mode connection between the adjustable transformer and the debugging and testing capacitor bank and the parallel test mode connection between the adjustable transformer and the compensating capacitor bank, and a second change-over switch which is used for realizing the series test mode connection between the output end of the test platform and the debugging and testing capacitor bank and the parallel test mode connection between the output end of the test platform and the compensating capacitor bank. The requirement of on-site detection of the arc suppression coil put into operation can be met, and the safety in the aspect of power distribution network application is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of detection of complete sets of arc suppression coils for distribution networks, and in particular relates to a test platform for function detection of complete sets of arc suppression coils and an operation method thereof. Background technique [0002] In recent years, with the rapid advancement of distribution network transformation, the structure of long-distance lines and cable lines makes the capacitive fault current increase when single-phase grounding occurs. The method of compensating the capacitive current generated by the ground fault by adding an arc suppression coil is more and more widely used. [0003] However, the on-site handover test of the complete set of arc suppression coils does not require functional testing, so its functional characteristics cannot be judged. According to the survey and statistics, it is found that about 70% of the complete sets of arc suppression coils that have bee...

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Problems solved by technology

[0003] However, the on-site handover test of the arc suppression coil complete set does not require functional testing, so its functional characteristics cannot be judged

According to the survey and statistics, it is found that about 70% of the complete sets of arc suppression coils that have been put into operation are in a sick operation state. The entire power system cannot be properly compensated, which expands the scope of the fault; in addition, only from the action report of the arc suppressing coil device, it is impossible to know the specific information of the single-phase ground fault, and it is impossible to know how the device automatically tracks the change of the capacitance current of the system. ability

[0004] At present, there are two schemes for the detection of complete sets of arc suppression coils: the first is to artificially create a single-phase ground fault in the distribution network, that is, to artificially ground a certain phase of the busbar or line through a special single-phase ground fault trigger device, which can Three methods of metallic grounding, transition resistance grounding and intermittent grounding are used respectively, and the relevant data of the complete set of arc suppression coils are recorded; the disadvantage of this method is that a single-phase grounding fault needs to be created in the system, and the existing single-phase grounding test device The volume is too large, there are many inconveniences in transportation and use, and the test site area is required to be large, it is difficult to have a suitable site for field tests in the city network test, and there is a risk of causing two-point grounding short circuit of different phases

The second method is a laboratory test method. Connect the complete set of arc suppression coils to the artificially built test system, use the switching grounding switch to conduct grounding tests in three ways: metallic grounding, impedance grounding, and arc grounding, and Record the relevant data of the complete set of arc suppressing coil; this method is mainly used for the type test of arc suppressing coil. Field test needs, operability is not strong

[0005] To sum up, in view of the common problems in the complete sets of arc suppression coils at present, it is necessary to conduct on-site testing of the action performance of the arc suppression coils that have been put into operation, and to verify whether the parameters of the arc suppression coils meet the requirements of relevant standards. Lack of effective means and corresponding equipment for on-site detection of various functional parameters of the arc suppression coil complete set

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