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Controllable voltage source full-compensation tracking compensation method based on sound phase voltage amplitude

A technology of voltage amplitude and compensation tracking, which is applied in the field of power systems, can solve problems such as grounding residual current at grounding points, personal electric shock, etc., and achieve the effect of preventing electric shock risks and simple tracking compensation methods

Active Publication Date: 2019-06-28
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] This application provides a controllable voltage source full compensation tracking compensation method based on sound phase-to-phase voltage amplitudes to solve the problem that the system can operate with faults, but there is still a certain grounding residual current at the grounding point, and there is still a risk of personal electric shock

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  • Controllable voltage source full-compensation tracking compensation method based on sound phase voltage amplitude
  • Controllable voltage source full-compensation tracking compensation method based on sound phase voltage amplitude
  • Controllable voltage source full-compensation tracking compensation method based on sound phase voltage amplitude

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Embodiment Construction

[0015] The method of the present application can be applied in the ground current full compensation circuit of the controllable voltage source, for example, figure 1 with figure 2 The circuit shown, where, figure 1 The circuit diagram for the controllable voltage source to realize the full compensation of the ground current alone, figure 2 It is a circuit diagram for a controllable voltage source parallel arc suppressing coil to realize full compensation of ground current.

[0016] see image 3 , the application provides a controllable voltage source full compensation tracking compensation method based on sound phase-to-phase voltage amplitude, the method includes:

[0017] Step 31: When a single-phase-to-ground fault occurs in the distribution network system, control the controllable voltage source to initially compensate the target voltage to perform voltage compensation.

[0018] Step 32: Keep the voltage amplitude of the initial compensation target voltage unchanged,...

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Abstract

The invention provides a controllable voltage source full-compensation tracking compensation method based on a sound phase voltage amplitude value. The output voltage of a controllable voltage sourcecan be quickly and accurately adjusted under various topological structures of controllable voltage source grounding current full compensation, and the current of a single-phase grounding fault pointis compensated to a minimum value, thereby preventing an electric shock risk. The invention provides the rapid, effective, simple and convenient tracking compensation method for the realization of thegrounding current full compensation of the controllable voltage source.

Description

technical field [0001] The present application relates to the technical field of electric power system, in particular to a full compensation tracking compensation method of a controllable voltage source based on sound phase-to-phase voltage amplitude. Background technique [0002] In the power grid system, especially in the medium and low voltage distribution network system, the single-phase ground fault accounts for the absolute majority of the total number of faults. The neutral point grounding methods of the medium and low voltage distribution network mainly include the neutral point non-grounding method, the neutral point grounding method through the arc suppression coil or the neutral point grounding method through a low-value resistance. In the neutral point ungrounded mode, the ground current is not compensated and operates with a fault, which poses a risk of personal electric shock. When the neutral point is grounded through the arc-suppression coil, the arc-suppres...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 刘红文王科
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST