Imbalance and Countermeasures Analysis on 35 kV Busbar Voltage of Tongxiang Substation

HE Changxiong; TANG Jun; CHEN Xiaoping; ZENG Qingji; CHEN Wei

doi:10.14044/j.1674-1757.pcrpc.2015.05.016

您当前的位置：

首页 >

文章列表页 >

Imbalance and Countermeasures Analysis on 35 kV Busbar Voltage of Tongxiang Substation

更新时间：2024-09-14

- Imbalance and Countermeasures Analysis on 35 kV Busbar Voltage of Tongxiang Substation
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 36, Issue 5, Pages: 80-87(2015)
- 作者机构：
  
  国网湖南省电力公司郴州供电分公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2015.05.016
  CLC： TM714.2
- Published：2015，
- 稿件说明：
移动端阅览
[1]何昌雄,唐军,陈小平,曾庆基,陈巍.同祥变35kV母线电压不平衡原因及对策分析[J].电力电容器与无功补偿,2015,36(05):80-87.

HE CHANGXIONG, TANG JUN, CHEN XIAOPING, et al. Imbalance and Countermeasures Analysis on 35 kV Busbar Voltage of Tongxiang Substation. [J]. Power capacitor & reactive power compensation, 2015, 36(5): 80-87.
[1]何昌雄,唐军,陈小平,曾庆基,陈巍.同祥变35kV母线电压不平衡原因及对策分析[J].电力电容器与无功补偿,2015,36(05):80-87. DOI： 10.14044/j.1674-1757.pcrpc.2015.05.016.

HE CHANGXIONG, TANG JUN, CHEN XIAOPING, et al. Imbalance and Countermeasures Analysis on 35 kV Busbar Voltage of Tongxiang Substation. [J]. Power capacitor & reactive power compensation, 2015, 36(5): 80-87. DOI： 10.14044/j.1674-1757.pcrpc.2015.05.016.

摘要

某些中性点不直接接地的35 kV短线路因A相装有电容式电压互感器使三相电容参数严重不对称

这导致母线三相电压不平衡。针对这一问题

以110 kV同祥变35 kV母线电压不平衡为例

通过倒闸操作的办法找出导致母线电压不平衡的线路。然后

采用头脑风暴法列出导致系统三相电压不平衡的各种原因

根据电压、电流等一系列异常信号特征找出同祥变35 kV母线电压不平衡的原因是A相电容式电压互感器引起三相电容参数不对称所致。最后

建立PSCAD暂态仿真模型

分析消弧线圈接于不同档位、改变运行方式和电压互感器的不同安装相位时的系统三相对地电压变化情况

所得结果为解决类似原因引起的系统三相电压不平衡问题提供参考。

Abstract

For certain 35 kV shorter transmission line with neutral point not to earth directly

the imbalance of three-phase voltages of busbar is occurred due to serious asymmetry of three-phase capacitor parameters since capacitive voltage transformer is mounted in phase A. For this issue

the imbalance of 35 kV busbar voltage at 110 kV Tongxiang substation is taken as an example to find out the line causing imbalance of busbar voltage by way of switching operation. Then

various reasons causing imbalance of three-voltage is listed by brainstorming method. It is found that the reason of imbalance of 35 kV busbar voltage is due to asymmetry of three-phase capacitor parameters of capacitive voltage transformer in phase A in accordance with such series of abnormal signal as current and voltage etc. Finally

a PSCAD transient simulation model is set up and voltage variation of three-phase to ground of the system with arc suppression coil mounted at different steps

the change of operation mode and at different installation phase of voltage transformer are analyzed

and the result obtained can provide reference in solving the imbalance of threephase voltage of the system due to similar reasons.

关键词

电压不平衡电容式电压互感器35 kV短线路倒闸操作三相参数不对称对地电容消弧线圈脱谐度

Keywords

voltage imbalancecapacitive voltage transformer35 kV short lineswitching operationasymmetry of three-phase parameterscapacitance to groundarc suppression coiloff turning

references

Views

121

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on Capacitive Reactive Power Compensation in Urban Distribution Network

Typical Defect Analysis for Capacitive Voltage Transformer

Study on the Processing Method of Influence of Stray Capacitance on CVT Harmonic Measurement

Positive and Negative Sequence Separation Control Method for Doubly-fed Wind Power Generator Based on Reduced-order Resonance Regulator

Related Author

GUO Xibin

CHEN Fuan

HUANG Liuxin

QIN Jiayuan

ZHAO Shihua

OUYANG Li

LIU Zhengzhe

XIE Weilun

Related Institution

School of Electrical Engineering,Henan University of Technology

XDT Electrical Power Energy Conservation Technique Co.,Ltd.

Electric Power Research Institute,State Grid Hunan Electric Power Company

Hengyang Electric Power Company,State Grid Hunan Electric Power Company

Guangdong Power Grid Co.,Ltd.,Dongguan Power Supply Bureau

⁰