【作者】 任建云；

【导师】 毕天姝； 张建伟；

【作者基本信息】 华北电力大学（北京） ， 电气工程， 2011， 硕士

【摘要】 自动发电控制(AGC)是山西电网控制联络线功率的主要手段,但原有控制策略存在着策略简单、区域控制偏差(Area Control Error, ACE)机组调节频繁、网间潮流调整效果差、调度员人工调整工作量大的问题。本文针对这些问题提出了整套适应山西电网实际的控制策略。新的控制策略采用切比雪夫型有限冲击响应(Finite impulse response, FIR)滤波器对原始ACE数据进行了有效滤波,减少了机组频繁调整；设置了合适的比例调节系数和ACE动态死区,提高了系统的稳定性；增加了ACE突变加力及爬坡加力两个微分环节,实现了对火电机组超前控制；叠加了一个积分偏差调整量,在ACE平均值偏差(简称A2)值偏差很大时给出调整加力,减少了ACE大幅波动且提高了下一个调整周期的稳定性。这些措施在实际闭环运行中取得了良好的控制效果。同时本文还针对山西电网原有AGC机组不考核、AGC机组调整性能参差不齐的状况,提出了机组性能评价的几个指标：AGC的可用率Ka、调节容量、调节速率、调节精度和响应时间。通过山西电网实际运行数据和考核结果验证了控制策略和机组性能指标的合理性和有效性。更多还原

【Abstract】 Automatic Generation Control (AGC) is a major means of the tie-lines power flow control in the Shanxi Grid. However, there are pressing problems with original control strategy, such as useless ACE units regulation, bad tie-lines power flow control, heavy work load of dispatcher, etc. A new control strategy suitable for the Shanxi power grid is proposed.In the new control strategy, Chebyshev type FIR wave filter is adopted to smooth Area Control Error (ACE) and proper coefficient and dynamic dead zone are set to improve the stability of the system. And two differential links is constructed to recognize ACE sudden change or load climb slope to get advanced control.Furthermore an integral link is developed to increase the generator output when A2 value deviation is great, which has reduced ACE fluctuation and maintained system stability in the next control cycle. All these suggested coutermeasures get good results in the practical close-loop control. Besides, some indexes of unit performance assessment：k1, k2，k3 are proposed.The validity and the reasonability of the proposed control strategy and unit performance index.are verified by the practical data of Shan Power grid.更多还原