电力系统大功率缺额下空调负荷群集的分散自律控制策略

发布时间：2018-10-18 11:44

【摘要】：空调是典型具有热存储特性的负荷,具有在电力系统发生大功率缺额事故时提供事故备用容量的潜能。为了充分利用空调负荷备用资源,提出了一种大功率缺额下空调负荷群集的分散自律控制策略。首先,对根据频率偏差调整空调设定温度的负荷分散式控制进行分析,确定了控制引起负荷群聚合功率振荡以及负荷恢复产生功率二次冲击的机理。在此基础上,提出了空调负荷群集的分散自律控制策略,各空调分散自主地调整设定温度上下限,保持控制前后负荷群的运行状态不变,消除聚合功率振荡,采用分时段恢复法避免功率二次冲击。之后,深入分析了所设计策略的控制特性及参数取值原则。最后,通过算例仿真验证了大功率缺额下空调负荷群集分散自律控制策略的有效性。
[Abstract]:Air conditioning is a typical load with thermal storage characteristics and has the potential to provide emergency reserve capacity in the event of large power vacancy accidents in power system. In order to make full use of the spare resources of air conditioning load, a decentralized autonomous control strategy of air conditioning load cluster under high power vacancy is proposed. Firstly, the load distributed control which adjusts the temperature of air conditioning according to the frequency deviation is analyzed, and the mechanism of power secondary impact caused by the control of load group aggregate power oscillation and load recovery is determined. On this basis, a decentralized and autonomous control strategy for air conditioning load cluster is put forward. Each air conditioner adjusts the upper and lower limits of temperature, keeps the running state of the load group unchanged before and after the control, and eliminates the aggregate power oscillation. The second power shock is avoided by the method of time-divided recovery. Then, the control characteristics and parameter selection principle of the designed strategy are analyzed in depth. Finally, the effectiveness of the decentralized autonomous control strategy for air conditioning load cluster under high power vacancy is verified by a numerical example.
【作者单位】：国网山东省电力公司电力科学研究院;
【分类号】：TM73

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