安全约束对区域电力市场的影响

Impact of Security Constraints on Regional Electricity Market

网架结构薄弱与安全约束问题是影响区域市场交易的重要因素。安全约束的存在使电力市场产生了有约束成交与无约束成交的差别,直接影响了市场成交结果;安全约束还改变了电力市场不同地区实际的市场结构和供需平衡,改变了市场参与者的竞标地位和市场力,从而间接影响了市场参与者的竞标策略。文中根据区域电力市场的规则特点和模拟运行实践,研究了评价安全约束对市场影响程度的指标,并提出了“等效区外供应者”的概念,深入分析了安全约束对各地区市场结构和参与者报价策略的影响。

Weak network configuration and security constraints have great impact on the bid and bargain of regional electricity market. The direct impact of security constraints on the market is due to the difference between the final bargain outcomes with security constraints and the non-constraint outcomes. It also changes different areas＇ practical market structure and relation between supply and demand, as well as the market power and biding status. So it indirectly impacts suppliers＇ bidding strategy in different areas. Based on the research on rules and practical operating of the territorial market in China, the estimation index is studied for direct and indirect impacts of security constraints on the market clearing and bid behaviors. The concept of equivalent external supplier is put forward and analytical method and indices are introduced to evaluate the degree of these influences.