Development of Capacitive Current Measuring Instrument Based on PLC for Power Distribution System

doi:10.11930/j.issn.10.11930.2015.4.127

Abstract

Abstract: Accurate measurement of capacitive current of resonant grounding system determines the compensation effect of Petersen coil. However, key to distribution system capacitive current measurement by maximum displacement voltage method is to find the neutral point maximum displacement voltage accurately. A capacitive current measuring device is designed based on Programmable Logic Controller (PLC). The ideas of automatic system operation tracking, capacitance current measuring by close-loop control are explained. The experimental results show that proposed measurement device is able to measure system capacitive current accurately. The device is also able to monitor system neutral point displacement voltage, arc suppression coil loop current and number of energized feeders in real time. Based on current system operation condition, the device can track system operation closely and improve compensation effect of Petersen coil in system.

Key words: PLC controller, power distribution system, capacitive current, measuring instrument, design

CLC Number:

TM933.1

YANG Yunyang, XIA Bin, ZHANG Yu, ZHOU Da, ZHANG Chunhui. Development of Capacitive Current Measuring Instrument Based on PLC for Power Distribution System[J]. Electric Power, 2015, 48(4): 127-130.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.4.127

https://www.electricpower.com.cn/EN/Y2015/V48/I4/127

References

[1] 李景禄，林玉怀，陈忠仁，等. ZXB 系列自动跟踪补偿消弧装置[J]. 中国电力，1998，31（8）：42－45．
LI Jinglu, LIN Yuhuai, CHEN Zhongren, et al. ZXB series arc suppressing coil with automatic tracking compensation [J]. Electric Power, 1998, 31(8): 42-45.
[2] 刘力，孙结中. 无电源中性点配电系统电容电流的简易测量法[J]. 中国电力，2001，34（11）：46－49．
LIU Li, SUN Jiezhong. A simple method of measuring capacity current in non-neutral distribution system [J]. Electric Power, 2001, 34(11): 46-49.
[3] 要焕年，曹梅月. 电力系统谐振接地[M]. 北京：中国电力出版社，1993.
[4] 李福寿. 中性点非有效接地电网的运行[M]. 北京：水利电力出版社，2000.
[5] 陈忠仁，吴维宁，陈家宏. 配电网自动消弧装置的测量跟踪问题[J]. 电力系统自动化，2004，28（10）：84－87．
CHEN Zhongren, WU Weining, CHEN Jiahong． Measuring and tracing of automatic arc-suppression devices in distribution networks [J]. Automation of Electric Power Systems, 2004, 28(10):84-87.
[6] 方中奇，周惠敏. 采用V/F和F/V转换实现模拟量的隔离[J]. 基础自动化，2002，9（1）：61－62．
FANG Zhongqi, ZHOU Huimin. Analog input insulation based on V/F and F/V conversion [J]. Basic Automation, 2002, 9(1): 61-62.
[7] 彭利强. 配电线路故障智能诊断装置的研究[D]. 长沙：长沙理工大学，2011.
[8] 周洪，李志斌，胡海涛，等. 基于PLC 的火电厂钢球式磨煤机制粉系统模糊神经元控制系统[J]. 中国电力，2002，35（7）：66－68．
ZHOU Hong, LI Zhibin, HU Haitao, et al. PLC-based fuzzy neuron control system of tube mill-pulverized coal preparation system in thermal power plant[J]. Electric Power, 2002, 35(7): 66-68.
[9] 高安邦，田敏，俞宁，等. 西门子S7-200PLC工程应用设计[M]. 北京：机械工业出版社，2011.

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