发电机组一次调频在线测试与AGC性能考核系统设计

电力市场环境下,需要合理评价发电机组提供的调频辅助服务,以保证市场公正公平。本文通过分析当前调频辅助服务考核中一次调频与自动发电控制(AGC)考核所面临的问题,提出了一次调频在线测试与AGC控制性能考核系统架构和设计思路;针对一次调频考核对过程数据的精度和时效性要求,提出了基于电厂远控终端(RTU)和同步相量测量装置(PMU)多源数据的一次调频在线测试方法,利用多源数据的时标校对、统计信息筛选完善考核结果的计算方式,更加准确评估机组的一次调频性能;提出了基于调节速率分布的调节精度计算方法,通过调节精度修正因子建立速率与精度的联动机制,以约束机组控制行为并引导其行为优化;最后通过应用案例分析,证明了所述方法的有效性。

Evaluation System Design of Online Test of Primary Frequency Regulationand AGC Performance for Generator Unit

Under electricity market environment,frequency regulation auxiliary service provided by the generator set needs to be evaluated reasonably,to ensure fair and equitable market.By analyzing the problems faced by assessment of primary frequency regulation and automatic generation control (AGC),an assessment system architecture and design ideas of online test of primary frequency regulation and AGC control performance are put forward.According to requirements of process data precision and timeliness,a PFR online test method based on remote terminal unit (RTU) and phasor measurement unit (PMU) data is proposed.In order to assess the unit''s frequency regulation performance more accurately;this method improves the calculation of assessment results using multi-source data time scale calibration and statistical information screening.Meanwhile a regulation method of adjusting precision based on the regulation rate distribution is proposed,through adjusting the precision correction factor to establish the linkage mechanism of rate and precision to control the behavior of the unit and guide its behavior optimization.Finally,the effectiveness of the method is proved by case analysis.