电力市场日前交易计划的分布式协同算法

A Distributed Approach for Day-ahead Trade Schedule in Electricity Market

将电力市场中各交易中心的计算机系统看做一个分布式计算平台,提出了一种基于分布式协同计算的电力市场日前交易计划算法。介绍了电力市场日前交易计划计算的数学模型及求解该模型的分布式协同算法:先由基层交易中心完成区域内交易预计划;然后上级交易中心协调各基层交易中心通过迭代计算完成区域间交易计划,在交易计算的同时完成全系统的电网安全校核;最后由基层交易中心在区域间交易计划的基础上形成最终的区域内交易计划。该算法兼顾了交易优化计算与安全校核计算,仿真算例结果表明这种分布式协同算法是有效的。

With the fast development of computer network technology, distributed computation is becoming a new paradigm in power system calculation. This paper proposed a distributed methodology for day-ahead trade schedule in electricity market. The mathematical model of day-ahead trade schedule in electricity market is introduced, whose distributed solution is presented in detail. Firstly, the lower-level PX of the region formulates provisional trade schedule of each region, and regional marginal prices are computed. Then cross-border trade schedules are formulated through iterative computation by lower-level PXs, which is under the coordination of the upper-level PX. Finally, final trade schedule of each region is formulated by the lower-level PX of the region based on cross-border trade schedules. During this process, the system-wide security evaluation is finished. The trade optimization calculations as well as the security evaluation are considered in the approach and the simulation results show that the proposed approach is effective.