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Circuit breaker switching reactor overvoltage simulation method

A technology for switching reactors and simulation methods, which is applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve problems such as difficulty in obtaining overvoltage characteristics, and achieve the effect of preventing reactor damage

Pending Publication Date: 2021-05-25
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] This application provides a circuit breaker switching reactor overvoltage simulation method, which solves the problem that it is difficult to obtain real overvoltage characteristics based on the simulation results due to the ideal breaking conditions of the circuit breaker

Method used

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  • Circuit breaker switching reactor overvoltage simulation method
  • Circuit breaker switching reactor overvoltage simulation method
  • Circuit breaker switching reactor overvoltage simulation method

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Embodiment Construction

[0032] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0033] In order to express the present invention more clearly, the following takes the BKDK-35 / 20000 dry-type air-core reactor as a specific model to carry out simulation to further illustrate the present invention.

[0034] The application provides a circuit breaker switching reactor overvoltage simulation method, including the following steps:

[0035] S01: Obtain system parameters, including parameters of circuit breakers, re...

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Abstract

The invention relates to a circuit breaker switching reactor overvoltage simulation method. The method comprises the following steps: acquiring parameters of a circuit breaker, a reactor and a line; building a power supply, a circuit breaker, an electric reactor and a line simulation model by utilizing PSCAD, wherein the circuit breaker simulation model adopts a BRK module and a model module in an ATP (Automatic Train Protection Agency) internal device of the PSCAD, the switching section time of the BRK module is set to be ideal, the turn-off resistance is 1Momega, the model module in the ATP and a control circuit are turned on and off, programming is carried out through a Fortran language; setting three input quantities of the model module as voltage at two ends of the circuit breaker, current flowing through the circuit breaker and change rate of the current to time, to reflect breakdown voltage, cut-off value and arc extinguishing capability of the circuit breaker; setting an output quantity by the model module, controlling the BRK module to be switched on or switched off for the working characteristics of the circuit breaker; according to the operation overvoltage characteristics generated when the built model simulates the reactor switching, making simulation analysis for different switching times and different cut-off currents of the circuit breaker, and recording and analyzing the overvoltage characteristics.

Description

technical field [0001] The present application relates to the technical field of fault diagnosis of power equipment, in particular to a simulation method for overvoltage of a circuit breaker switching reactor. Background technique [0002] The substation is a place for transforming voltage and current, receiving electric energy and distributing electric energy. It is the main link between the user and the power supply period. It plays an important role in the power supply process. The problem of its influence during the operation process has a great impact on the entire The normal operation of the power supply system has a greater impact. The equipment in the substation mainly includes transformers, high-voltage circuit breakers, isolating switches, busbars, lightning arresters, capacitors, reactors, etc., and equipment failures occur from time to time. Among them, the insulation fault of the dry-type air-core reactor is a relatively common fault, and the insulation fault o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q10/00G06F113/04
CPCG06F30/20G06Q10/20G06F2113/04
Inventor 崔志刚郝长金汪耀辉钱国超
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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