改善电厂调频性能的储能策略研究和容量配置

发布时间：2018-04-10 02:41

本文选题：自动发电控制　切入点：储能　出处：《电力自动化设备》2017年08期

【摘要】：具有快速充放电特性的储能技术,作为一种新的调频方式已逐步进入多国的辅助服务市场,参与到传统机组的自动发电控制(AGC)中。基于华北地区的辅助服务补偿政策,提出了改善电厂调频性能的储能充放电策略和容量配置方法。首先,根据政策中AGC考核指标Kp值的定义,提出调节速率、调节精度、响应时间3项指标的计算方法,并制定出提升调节性能、降低响应时间的储能充放电策略。同时,为了延长储能的使用寿命,制定了电池荷电状态的越限回归策略。在分析储能各项成本和收益的基础上,建立了以净收益最大为目标函数的储能经济性模型。最后,通过具体算例,对使用该策略前后机组的AGC性能进行对比分析并采用差分进化算法计算出了机组配置储能的最优容量。结果表明,使用储能策略可以显著提升机组的Kp值,带来明显的调频收益。
[Abstract]:As a new mode of frequency modulation, the energy storage technology with rapid charge-discharge characteristics has gradually entered the auxiliary service market of many countries and participated in the automatic generation control system (AGCC) of traditional generating units.Based on the policy of supplementary service compensation in North China, a charging and discharging strategy and capacity allocation method for improving the frequency modulation performance of power plant are proposed.Firstly, according to the definition of Kp value of AGC assessment index in policy, the calculation methods of regulation rate, adjustment precision and response time are put forward, and a charging and discharging strategy for improving regulation performance and reducing response time is worked out.At the same time, in order to prolong the service life of energy storage, the overrun regression strategy of battery charge state was established.On the basis of analyzing the cost and benefit of energy storage, the economic model of energy storage with the maximum net income as the objective function is established.Finally, the AGC performance of the unit before and after the strategy is compared and analyzed by a concrete example, and the optimal capacity of the unit configuration energy storage is calculated by using the differential evolution algorithm.The results show that using the energy storage strategy can significantly increase the Kp value of the unit and bring about obvious FM income.
【作者单位】：东南大学电气工程学院;中国电力科学研究院;
【基金】：国家电网公司科技项目(NY71-16-040)~~
【分类号】：TM62;TM73

【参考文献】