Unlock instant, AI-driven research and patent intelligence for your innovation.

A device and method for obtaining the maximum operating voltage of a lightning arrester

A technology of operating voltage and arrester, which is applied in the field of electric power and can solve the problems of poor accuracy of the maximum operating voltage of arrester

Active Publication Date: 2020-11-03
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a device and method for obtaining the maximum operating voltage of a lightning arrester, which can solve the problem of poor accuracy in obtaining the maximum operating voltage of a lightning arrester in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device and method for obtaining the maximum operating voltage of a lightning arrester
  • A device and method for obtaining the maximum operating voltage of a lightning arrester
  • A device and method for obtaining the maximum operating voltage of a lightning arrester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 , the obtaining device of the maximum operating voltage of the lightning arrester provided by the embodiment of the present invention includes: a reading unit 1, a calculation unit 2 and a curve generation unit 3, the output end of the reading unit 1 is connected to the input end of the calculation unit 2, and the calculation unit 2 The output end of is connected with the input end of curve generation unit 3;

[0039] The reading unit 1 is used to read the power frequency and the effective value of each characteristic harmonic current of the reactor in the AC filter;

[0040] The calculation unit 2 is used to obtain the maximum value corresponding to the total harmonic voltage of the reactor in the AC filter of the w order of random phase distribution according to the power frequency of the reactor in the AC filter and the effective value of each characteristic harmonic current;

[0041] The curve generating unit 3 is used to generate the probability distr...

Embodiment 2

[0078] see Figure 4, the method for obtaining the maximum operating voltage of the arrester provided by the embodiment of the present invention includes:

[0079] Read the power frequency of the reactor in the AC filter and the effective value of each characteristic harmonic current;

[0080] According to the power frequency of the reactor in the AC filter and the effective value of each characteristic harmonic current, the maximum value corresponding to the total harmonic voltage of the reactor in the AC filter of the wth random phase distribution is obtained;

[0081] According to the maximum value corresponding to the total harmonic voltage of the reactor in the AC filter under the wth random phase distribution, the probability distribution curve of the maximum value of the total harmonic voltage is generated, so as to select the AC from the probability distribution curve of the maximum value of the total harmonic voltage The maximum operating voltage of the arrester in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a device and a method of acquiring the maximum operation voltage of a lightning arrester, which relate to the technical field of power and aim at solving the problem of poor lightning arrester maximum operation voltage precision in the prior art. The device for acquiring the maximum operation voltage of the lightning arrester comprises a reading unit, a computing unit and acurve generating unit, wherein the curve generating unit is used for generating a probability distribution curve of total harmonic voltage maximum values according to the maximum values correspondingto total harmonic voltage of a reactor in an AC filter at w times under random phase distribution so as to select the maximum operation voltage of the lightning arrester in the AC filter from the probability distribution curve of the total harmonic voltage maximum values. The method of acquiring the maximum operation voltage of the lightning arrester comprises the device for acquiring the maximumoperation voltage of the lightning arrester mentioned in the above technical scheme. The device for acquiring the maximum operation voltage of the lightning arrester provided in the invention is usedfor accurately acquiring the maximum operation voltage of the lightning arrester.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a device and method for obtaining the maximum operating voltage of an arrester. Background technique [0002] The AC bus in the converter station of the DC transmission system is generally equipped with a filter to filter out the harmonics brought by the converter and provide support for reactive power. The low-voltage reactor in the filter is usually equipped with a lightning arrester for the filter For protection, the reference voltage of the arrester is usually used as a key indicator for selecting the arrester. Calculating the reference voltage of the arrester includes the following steps: [0003] 1. Calculate the maximum operating voltage of the arrester; [0004] 2. Select the appropriate charging rate k, the selection range of the charging rate k of the arrester in the AC filter of the DC project is 0.7-0.85; [0005] 3. Reference voltage U ref =MCOV / k; Among t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/30
CPCG01R19/30
Inventor 黄莹徐迪臻赵晓斌李凌飞卢毓欣项阳郭龙张祖安樊丽娟辛清明侯婷邱伟
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD