摘 要：随着国家电网对供电质量要求的不断提高，电力行业采用了多种技术手段保证电网频率相对稳定，而一次调频作为核心手段备受关注、应用广泛。但由于电力调度中心一般通过远程系统实现杜宇电厂一次调频性能的监督和考核，考虑到电厂环境的复杂性，其出具的考核结果经常和实际调频结果不一致， 因此提出一种基于电厂环境的一次调频考核系统，其是通过Winpcap数据抓包监听采集PMU装置的一次调频相关参数，并针对电厂实际一次调频机组的性能量化考核参数贡献电量的计算方法， 通过以龙游电厂的机组实时数据为基础，给出相应考核结果，实现了对其机组一次调频情况的考核分析。

关键词：一次调频;电网频率;Winpcap;在线监测

DOI：10. 11907/rjdk. 181876

中图分类号：TP319文献标识码：A文章编号：1672-7800（2019）001-0108-04

Abstract： With the constant improvement of the national power grid for power supply quality requirements， the electric power industry has adopted many technical means to ensure the grid frequency is relatively stable， and primary frequency control， as one of the most important of methods has had wide attention and application. But because the electric power dispatching center employs the remote system to achieve a power plant of the cuckoo primary frequency control performance of the supervision and examination， considering the complexity of the power plant environment， the issue of the assessment results are often inconsistent with the actual frequency modulation. So in order to solve this problem， this paper proposes an assessment system of primary frequency control based on power plant environment，which uses Winpcap data capture and interception to collect the primary frequency-related parameters of the PMU device， and uses the power contribution calculation method for the performance of the power plant's actual primary frequency modulation unit. According to the corresponding assessment results， the assessment and analysis of the primary frequency modulation of the unit was realized based on the real-time data of the unit of Longyou Power Plant.

0 引言

电力系统的稳定运行对国家工业生产和经济发展有重要影响，其稳定运行由多个因素决定，其中最主要的是电网频率需保持在[50Hz±f死区]范围内[1-8]，因此电力系统采取多种技术保证电网频率稳定，由于一次调频对电网频率波动的响应速度较快，且调节范围较大，所以被广泛运用于维持电网稳定中。但是由于过去电厂没有相应的满足现场环境要求的一次调频系统，只能完全按照省级调度中心下发的一次调频指令调整机组负荷，而省调度中心往往没有考虑到电厂实际经济利益[9-13]，所以电厂为追求经济利益不会一直完全响应省调度公司的一次调频投入投出信号。……