电气节能设计应重视中性线过流问题
摘要：现代建筑中LED照明灯具、调光设备、充电桩、变频器等谐波源设备大量增加, 由零序谐波导致的中性线电流过流问题已经影响到建筑物的用电安全及消防安全, 本文从中性线过流问题产生的根源进行分析及探讨, 提出了相应的防控措施, 对建筑电气设计过程应对中性线过流问题有积极意义。
关键词：中性线过流 谐波源 零序谐波 四极开关 有源滤波器
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参考文献[1] 12SDX101-2民用建筑电气设计计算及示例[S]. 北京:中国计划出版社, 2012.
[2] GB 17625.1-2012电磁兼容限值谐波电流发射限值 (设备每相输入电流≤16A) [S]. 北京:中国标准出版社, 2013.
[3] 管永高, 牛涛, 倪盼盼. 电动汽车直流充电桩接入对电网谐波的影响分析[J]. 电力需求侧管理, 2017, 19 (3) :10-14.
[4] 周娟, 任国影, 魏琛等. 电动汽车交流充电桩谐波分析及谐波抑制研究[J]. 电力系统保护与控制, 2017, 45 (5) :18-25.
[5] 刘振忠, 西蒙田, 周焱等. 四极断路器的选用[J]. 智能建筑电气技术, 2016, 10 (4) :80-84.
[2] GB 17625.1-2012电磁兼容限值谐波电流发射限值 (设备每相输入电流≤16A) [S]. 北京:中国标准出版社, 2013.
[3] 管永高, 牛涛, 倪盼盼. 电动汽车直流充电桩接入对电网谐波的影响分析[J]. 电力需求侧管理, 2017, 19 (3) :10-14.
[4] 周娟, 任国影, 魏琛等. 电动汽车交流充电桩谐波分析及谐波抑制研究[J]. 电力系统保护与控制, 2017, 45 (5) :18-25.
[5] 刘振忠, 西蒙田, 周焱等. 四极断路器的选用[J]. 智能建筑电气技术, 2016, 10 (4) :80-84.
Problem of Neutral Line Overflow of Electrical Energy Saving Design
Abstract: In modern buildings, there has been a large increase in harmonic source equipment such as LED lighting lamps, dimming equipment, charging piles, and frequency converters. The problem of neutral line current overflowing caused by zero-sequence harmonics has affected the electrical and fire safety of buildings. This paper analyzes and discusses the root causes of the problem of neutral line Overflow, and puts forward corresponding prevention and control measures, which has positive significance for the architectural electrical design process to deal with the problem of neutral line overflow.
Keywords: neutral line overflow; harmonic source; zero sequence harmonics; four-pole switch; active filter;
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