[1]邹练辉,韩金尅,黄乐,等.基于电路网络结构变换的电压谐波误差检测方法[J].应用科技,2017,(06):27-31.[doi:10.11991/yykj.201611013]
 ZOU Lianhui,HAN Jinke,HUANG Le,et al.A method of voltage harmonic error detection based on circuit network structure transformation[J].yykj,2017,(06):27-31.[doi:10.11991/yykj.201611013]
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基于电路网络结构变换的电压谐波误差检测方法(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
期数:
2017年06期
页码:
27-31
栏目:
现代电子技术
出版日期:
2017-12-05

文章信息/Info

Title:
A method of voltage harmonic error detection based on circuit network structure transformation
作者:
邹练辉1 韩金尅1 黄乐1 梁江东2
1. 广东电网有限责任公司 梅州供电局, 广东 梅州 514000;
2. 武汉武高电气技术有限责任公司, 湖北 武汉 430074
Author(s):
ZOU Lianhui1 HAN Jinke1 HUANG Le1 LIANG Jiangdong2
1. Meizhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Meizhou 514000, China;
2. Wuhan Wugao Electricity Co., Ltd., Wuhan 430074, China
关键词:
智能电网电能质量检测三角形接线相电压参数谐振星网变换MATLAB仿真谐波畸变
Keywords:
smart electric gridpower quality measurementtriangular connectionphase voltageparametric resonancenetwork transformationMATLAB simulationharmonic distortion
分类号:
TM131.4
DOI:
10.11991/yykj.201611013
文献标志码:
A
摘要:
针对电能特征异常扰动的情况下,探究可靠的电压特征误差测量方法。电能波动、冲击与非线性等质量异常扰动,严重影响供电可靠性,造成了电力用户的经济损失。从理论上分析电压谐波及谐波潮流出现测量误差的机理,构建变压器结构的单相测量等值电路,从而为消除参数谐振影响提供基础。提出了三同阻并行接入积分相电压的测量方案,在不改变原系统运行方式的情况下,通过电路网络结构变换排除参数谐振引入的干扰,通过改造仪器的电压输入回路,实现三相系统从线电压到相电压的转换,最终实现系统电压的准确测量。通过MATLAB仿真计算与现场实际测量结果,表明经过电路变换测量的电压各次谐波畸变率测试结果与输入信号的理论畸变率一致,证明了该方法的可行性。
Abstract:
This paper focuses on the a reliable method for measuring voltage characteristic error under the abnormal disturbance of electric energy characteristic. Abnormal mass disturbance resulted from electric power disturbance, impact, and nonlinearity seriously influence reliability of power supply, and cause economic loss of users. This paper theoretical analyzed voltage harmonics and harmonic power flow measurement error mechanism. In order to eliminate the impact of resonance parameters, the structure of transformer single-phase measurement equivalent circuit was built. The measurement scheme of three phase-to-neutral parallel-input integrated phase voltage was proposed. Without changing the operating mode of the original system, the interference of parametric resonance was eliminated by the circuit network structure transformation and realize transformation from line voltage to phase voltage of the three-phase system by changing instrument’s voltage input circuit, achieving accurate voltage measurement method. The MATLAB simulation and field measurement show that the voltage harmonic distortion measurement result derived from electric circuit transformation measurement is in agreement with theoretical harmonic distortion of input signal, proving feasibility of the method.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-11-30。
基金项目:广东电网有限责任公司科研项目(K-GD2014-208)
作者简介:邹练辉(1974-),男,工程师
通讯作者:韩金尅,E-mail:hjinke2016@21cn.com
更新日期/Last Update: 2018-01-06