Multifunctional Microcontroller-based Protection Unit for Switchgear of Terminal Users

WU Jian-wen1; HUANG Bi-yao1; ZHANG Shao-bo2; LIAN Shi-jun2

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Multifunctional Microcontroller-based Protection Unit for Switchgear of Terminal Users

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- Multifunctional Microcontroller-based Protection Unit for Switchgear of Terminal Users
- High VoltageApparatus Issue 6, Pages: 410-412+416(2006)
- 作者机构：
  
  1. 北京航空航天大学自动化科学与电气工程学院
  2. 珠海可利电气有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM591;TM774
- Published：2006
- 稿件说明：
移动端阅览
[1]武建文,黄毕尧,张少渤,廉世军.终端用户开关柜多功能微机保护装置[J].高压电器,2006(06):410-412+416.

WU Jian-wen1, HUANG Bi-yao1, ZHANG Shao-bo2, et al. Multifunctional Microcontroller-based Protection Unit for Switchgear of Terminal Users[J]. High voltageapparatus, 2006, (6): 410-412+416.
[1]武建文,黄毕尧,张少渤,廉世军.终端用户开关柜多功能微机保护装置[J].高压电器,2006(06):410-412+416. DOI：

WU Jian-wen1, HUANG Bi-yao1, ZHANG Shao-bo2, et al. Multifunctional Microcontroller-based Protection Unit for Switchgear of Terminal Users[J]. High voltageapparatus, 2006, (6): 410-412+416. DOI：

摘要

针对12 kV配电网终端用户变电站、户内外环网柜等进线开关柜的特点

设计了一种基于16位单片机控制的多功能终端用户开关柜微机保护装置。该保护装置自具电源

基于热量累积原理实现快速高精度相电流反时限保护方法

实现对相电流和零序电流三段式保护。根据主回路断相和CT断线故障时相电流符号特征及电流值特点来识别故障类型。故障电流录波

液晶显示

CAN总线通讯接口与其它保护装置及上位机之间远程通讯。实验结果表明

动作时间及电流动作值精度在2%以内

保护装置运行稳定可靠。

Abstract

Aiming at the incoming line switchgear cabinet characteristics of 12 kV distribution network terminal substation and main unit

this paper presents a multifunctional digital protection set of terminal user switchgear based on 16-bit microprocessor.The power of the protector is supplied by itself from the CT.Based on thermal cumulate principles

a rapid and high precision inverse-time phase-sequence over-current protection is implemented.Three stages phase-sequence current and zero-sequence current protection can be implemented.Main circuit phase-lack fault and CT wire-break fault can be identified by the current signs and values.Fault current recording is displayed by liquid-crystal and current curve diagram can be transmitted to PC and therefore analyzed.It can communicate with other protection apparatus based on CAN field-bus.Test results show that time duration and current operating value precision are less than 2%

and the functions of the protection device are reliable.

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Related Author

WU Jian-wen1

WANG Xiao-bo1

ZHANG Shao-bo2

JIANG Yu-qiang2

JI Hongquan

XIN Feng

LIU Ruoxi

WANG Zhihui

Related Institution

Beihang University

Zhuhai Keli Electric Group Ltd.

珠海市可利电气有限公司北京100083

广东珠海519015

State Grid Beijing Electric Power Company Urban Power Supply Company

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