电压质量差别电价Different Pricing of Electric Power Based on the Voltage Quality唐 寅 生TANG Yin-sheng（湖南电力调度通信中心，410007 长沙） （Hunan Electric Power Dispatching & Communication Center, Changsha 410007, China）摘要：电压质量是电能的重要指标之一。用电压（幅值）质量特征指标，衡量发电厂上网电能的电压质量是否合格；同理，用电压质量特征指标，衡量变电站下网电能是否影响了电压质量合格，并实施《电压质量差别电价》，可以促进电网节能深化持续进展。Abstracts: Voltage quality is one of the important indicators of electric power, the voltage amplitude quality indicator is used to measure the voltage quality of the power offered by the power plant, similarly, Using the voltage quality indicator to measure the voltage quality of the power offered by the grid, and carry out the “Different Pricing of Electric Power Based on the Voltage Quality”, will promote the energy saving of the power grid to develop thoroughly and continuously.关键词： 电压质量差别电价 促进 节能 提高电压质量Keywords: Different pricing of electric power based on the voltage quality, promote, energy-saving, raise the voltage quality.电网降损的潜力每年约有 500 亿千瓦时。挖掘这 500 亿千瓦时，不仅要靠新技术，更需要制度创新。《电压质量差别电价》可以促进电网节能深化持续进展。1、电网线路损耗与降损潜力发电厂的上网电量经过超高压电网、高压电网、配电网和企业电网向用电企业送电，电流（I）经过输电线路和变压器电阻（R）时因发热产生的功率损耗（△P＝3×I2×R），叫做线路损耗。发电厂送入电网的电能量叫做供电量，电网售给企业的电能量叫做售电量，供电量减去售电量等于线损电量，线损电量除以供电量等于线路损失率，售电量除以供电量等于输电效率。通过优化电网结构，减小电网电阻达到降低线损的目标，叫做结构降损。城乡电网改造后，电网结构已经得到了很大改善，现已无大问题。通过电力系统无功优化调度，减少电网中无功的流动数量，缩短电网中无功的流动距离，达到降低线损的目的，叫做运行降损。这是我们讨论的主题[1]。表 1 是...
