电气工程学报 ›› 2018, Vol. 13 ›› Issue (9): 38-43.doi: 10.11985/2018.09.007

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交直流混合配电网电能质量综合检测和补偿方法

张敬安,王雷涛,王鹏   

  1. 许继集团有限公司 许昌 461000
  • 收稿日期:2018-05-29 出版日期:2018-09-25 发布日期:2019-11-29
  • 作者简介:张敬安 男 1968年生,高级工程师,主要从事电力系统自动化、分布式发电与微电网技术开发工作。|王雷涛 男 1979年生,硕士,高级工程师,主要研究方向为主动配电网技术、电力系统保护与控制等。
  • 基金资助:
    国网科技项目:适应高渗透率分布电源接入的配电网继电保护技术研究

Power Quality Detection and Compensation Method of AC/DC Hybrid Distribution Network

Zhang Jingan,Wang Leitao,Wang Peng   

  1. XJ Group Corporation Xuchang 461000 China
  • Received:2018-05-29 Online:2018-09-25 Published:2019-11-29

摘要:

随着配电网中分布式电源接入的渗透率越来越高,配电网结构越来越复杂,运行方式也复杂多变,配电网中的电能质量问题也日趋突出,电压电流畸变情况较为严重。文章采用基于瞬时无功功率理论的ip-iq改进算法,对交流侧配电网中谐波、无功及负序电流分量进行实时补偿检测;采用PI控制器与重复控制器的串联结构对各次谐波进行补偿控制,产生与其大小相等、方向相反的电流注入线路,使线路中电流趋于正弦化,以抵消谐波、无功的不良影响。通过装置样机实验验证了所提方法的有效性。

关键词: 分布式电源, 电能质量, ip-iq, PI控制器与重复控制器, 补偿检测, 补偿控制

Abstract:

With the increasing number of distributed generation connecting to the distribution network, the network structure is becoming more and more complex. the network also becomes more flexible to operation, power quality problems in distribution network is becoming more and more complicated situation, voltage and current distortion is serious. In this paper an improved detection algorithm based on instantaneous reactive power theory is presented, this algorithm which is based on ip-iq method can detect the reactive power and negative sequence compensation of random harmonic current respectively in real time. The series structure of PI controller and repetitive controller is used to control the harmonics to produce an current injection line that is equal in magnitude and opposite in direction, so that the current in the line tends to be sinusoidal to cancel the harmonic and reactive influences. The effectiveness of the proposed method is verified by the prototype experiment.

Key words: Distributed generation, power quality, ip-iq, PI controller and repetitive controller, compensation detection, compensation control

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