Active Dispatch for Interconnected Power System Considering Coordination of Tie Line Power Schedule and Peak Climbing Demand

ZHU Tao1,2, YU Jilai1(1. Harbin Institute of Technology, Harbin 150001, China;2. Yunnan Electric Power Dispatching Center, Kunming 650011, China)  

Close is the correlation between frequency regulation, peak load and tie-line regulation in the interconnected power system. In the process of peak climbing , how to prevent the impact of the interconnected power system support on the tie-line and solve the problem of AGC units lacking capacity is the key problem in the peak active dispatch. This paper builds a model for coordinating optimal dispatching of peak climbing for the interconnected power system. The units relating to tie-line can be procured by an electrical dissection algorithm in the sending and receiving network at the first peak climbing stage. Then the regulating capacities of NON-AGC units in the sending and receiving network are checked and NON-AGC units are divided into two unit groups, the regulating capacity short and regulating capacity abundant group. In the process of peak climbing, firstly, the units relating to tie-line is dispatched so as to maintain the scheduled power of tie-line. Then various units in the sending and receiving network are coordinated at the same time, including the NON-AGC units and AGC units, as well as the regulating capacity short and regulating capacity abundant unit groups. The case analysis demonstrates the feasibility of the model proposed.

【Fund】： 国家自然科学基金资助项目(50477008);; 高等学校博士学科点专项科研基金资助项目(20040213031);; 黑龙江省自然科学基金资助项目(E0326)~~
【CateGory Index】： TM73

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