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现行的轨道交通供电系统,在其换流和整流装置设备的接入和注入公用电网处必然会产生一定的谐波电流和负序电流,可能影响电网的安全经济运行和其它用电户的用电质量。为此应对这些用电户依法加强监管,如日常测量、专门测量和定期检测等。虽经2005年实测,各项指标尚未超标,但文章着重指出,这仅是轨道交通电力机车的负载率目前尚小于35%,各变电站设计的短路容量较大所致,随着负载率的增大,轨道交通的谐波电压电流将会超标。有鉴于此,文章提出若干具体的谐波管理及谐波超标罚款办法的建议。
The current rail transit power supply system will inevitably generate some harmonic current and negative sequence current in its commutation and rectifying device equipment access and injection into the utility grid, which may affect the safe and economical operation of the grid and other electric users Electric quality. To deal with these users to strengthen supervision of the law, such as daily measurements, special measurements and regular testing. Although the actual measured in 2005, the indicators have not exceeded the standard, but the article stressed that this is only the load factor of rail transit electric locomotive is still less than 35%, the short circuit capacity of the substation design due to the larger Large, rail traffic harmonic voltage and current will be exceeded. In view of this, the article put forward a number of specific recommendations for harmonic management and harmonic penalty methods.