Research On The Index For Evaluating The Performance Of Generator Unit Primary Frequency Regulation

In electrical market, the generation companies have been divided from the grid company,they sell their power and ancillary service through market as an artificial person. Ancillaryservice is one of important characteristics of electrical market. The generator unit primaryfrequency regulation is a kind of important ancillary service. The primary frequencyregulation has direct effect on the grid frequency, and it is very important to maintain thestability of power systems. Because of the particularity of primary frequency regulationancillary service, the grid company requires the generator units make the primary frequencyregulation on operation. But the generation companies don't want to do like that because oftheir own profit. In order to spur the generation companies woke well, it is necessary for thegrid companies to assess the quality of their services. As to performance estimation ofprimary frequency regulation, some different indexes have been put forward. Therepresentational indexes include: the rate of primary frequency regulation on operation, thecontributing energy of primary frequency regulation, the average of regulation quantity and soon. But these indexes have some shortages.This paper proposes a new index to estimate the primary frequency regulation. First of all,this paper gives a detailed introduce and analysis of the frequency control, then studies theCPS standard, and discusses the relation between CPS criteria and primary frequencyregulation and secondary frequency regulation. Then, it introduces and analyses someindexes,methods for estimating the performance of primary frequency regulation. Also, thispaper introduces some kinds of compensate methods. Finally, this paper proposes a new indexto estimate the performance of primary frequency regulation. In the ending of this paper, thisnew index is proved to be valid by using of the simulation.The characteristics of this new evaluation method including:1. This index is based on probability, using long term real-time data to estimate theperformance of primary frequency regulation.2. This index can reflect whether the primary frequency regulation is on operation andestimate the performance of the primary frequency regulation.