英国供电安全工程建议ER P2/6浅析

英国电力委员会制订的供电安全工程建议ER P2/6是英国关于配电网规划的指导性文件，该文件以最终客户的供电可靠性为规划目标，将系统安全性与客户负荷大小相关联，应用停电频率、停电持续时间等主要的电网可靠性指标，结合运行方式及其他有关数据来估计系统的运行特性及发展趋势，对可靠性投资费用和效益进行分析，为正确的投资决策提供依据。文章分析了ER P2/6的背景、内容、特点、理论基础和实际应用，并通过实际案例验证了该文件的实效性。文章还以ER P2/6为参考，客观地审视了我国目前电网规划设计和调度运行中有关电力可靠性标准的理念及标准应用方面的不合理之处，提出了相关意见和建议。

Discussion on Security of Power Supply Engineering Recommendation ER P2/6 of UK

Engineering Recommendation P2/6 (ER P2/6) is the basal file for distribution network planning in UK. Aiming at the reliability of power supply for final customer, the file relates the security of system with loads of customers. Then by applying some main reliability indices such as power supply interruption frequency, power supply interruption duration and so on, and combining with operation modes and other relative data, ER P2/6 gives guidelines to estimate operation characteristic and developing trend of power network to analyze the relationship between reliability investment and benefit, and to make correct investment decision. The authors analyze the background, content, elements, characteristic and the application of ER P2/6; and through an actual case, verify high efficiency of ER P2/6. Taking ER P2/6 for reference and by means of contrasting the idea of power supply reliability standard for current power network planning and design as well as the standard application in China with those in UK, this paper reviews the logic and application of power reliability standard in China and indicates the shortcoming in it, then gives some suggestions of optimization.