A Simplified Circuit and Analysis Method of Fully Compensated Analysis with Compensated Inductance
A technology of compensating inductance and analysis method, applied in the field of electric power, can solve the problems of complex loop structure and difficult application, achieve the effect of simple loop, reduce the full compensation point of controllable voltage source to ground fault current, and the analysis process is clear and clear
Active Publication Date: 2020-10-20
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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[0004] This application provides a fully compensated analysis simplified circuit and analysis method with compensation inductance to solve the problem that the circuit structure is complex and difficult to apply in the prior art
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[0025] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 As shown in the present application, a schematic structural diagram of a fully compensated analysis simplified circuit with compensation inductance is provided. The...
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An embodiment of the application discloses a simplified circuit and an analysis method for full compensation analysis with a compensation inductor. The circuit comprises a controllable voltage source,a controllable voltage source internal resistance, a compensation inductance, an A phase power supply, a B phase power supply, a C phase power supply, a first ground distributed capacitor, a second ground distributed capacitor, a third ground distributed capacitor, a first ground leakage resistor, a second ground leakage resistor, a third ground leakage resistor and a grounding impedance. The circuit provided by the embodiment of the application is simple and clear in analysis process, and greatly reduces the complexity of the full compensation analysis of the grounding fault current by the controllable voltage source, which is suitable for the calculation and analysis of the controllable voltage source for the single-phase grounding fault full compensation.
Description
technical field [0001] The present application relates to the field of electric power technology, in particular to a simplified circuit and analysis method for full compensation analysis with compensation inductance. Background technique [0002] my country's low-voltage distribution network generally adopts small current grounding methods, including the neutral point ungrounded method or the neutral point grounded method through the arc suppression coil. When the neutral point is not grounded, when the system capacitive current exceeds 5A, the grounding arc cannot be extinguished by itself, and the safety of personnel and operation cannot be guaranteed. When the neutral point is grounded through the arc-suppression coil, the grounding arc can be partially extinguished by itself due to the reactive current compensated by the arc-suppression coil, but the arc-suppression coil can only compensate for the reactive current, and there is still a grounding residual current after c...
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IPC IPC(8): H02H9/08
Inventor 刘红文王科
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST