电力市场中区域电价综合模型  

AN INTEGRATED ZONAL PRICING FORMULATION IN ELECTRICITY MARKET

作　　者：丁晓莺[1] 王锡凡[1] 胡泽春[1] 王建学[1] 

机构地区：[1]西安交通大学电气工程学院,陕西省西安市710049

出　　处：《电力系统自动化》2004年第10期59-64,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金重点资助项目(59937150);高等学校博士学科点专项科研基金资助项目(1999069801)。

摘　　要：安排发电计划、进行网络阻塞管理以及相应价格的制定是电力市场的基本职能,应将三者集中协调。区别于传统的单时段电价模型,文中所提出的区域电价模型考虑了发电计划各时段之间的耦合约束(如爬坡约束),并提出了一种简单、实用的区域划分方法。建立了区域电价的综合模型,该模型包括3部分:电能交易出清、电价区域划分、解决网络阻塞的同时产生区域电价。通过RTS-24系统和中国某实际系统的验证,所提出的分区方法是合理、可行的,由此产生的电价信号能提高输电资源利用效率,引导发电商合理投资。In a competitive electricity market, generation scheduling, congestion management and prices computation should be coordinated centrally. This paper proposes an integrated zonal pricing formulation to obtain a feasible and consecutive daily generation schedule. Different from traditional pricing formulation with single time period, time coupling constraints, such as ramp rate constraints, are taken into account. On the other hand, unsatisfactory experiences with pre-delineated zones definition method led to the development of the dynamic zones definition method. A simple and effective dynamic zones definition method based on price differences is developed. The following three steps can implement the proposed formulation. At first, a daily energy scheduling for the next 24-hour is determined. Then, zones are specified based on congestion state. Finally, generation schedules are modified on a generation payments minimizing basis to relief congestion. Numerical simulations on RTS-24 system and a practical system in China show that the proposed zones definition method is rational, and the zonal prices can improve the efficiency of power grid usage, and provide rational economic signals for generation investments.

关 键 词：电力市场 区域电价 节点电价 电能出清 最优潮流 阻塞管理 

分 类 号：F407.6[经济管理—产业经济]