电力市场初期两部制无功定价方法

Two-part tariff method for reactive power in initial stages of power market

提出了一种电力市场初期的两部制无功定价方法,以有功电能成本和无功电量成本最优为目标函数,以潮流方程为等式约束,以运行及安全约束为不等式约束。建议的内点非线性规划法原理简单、计算量小。所提两部制无功电价模型的核心想法为:一方面,提出电力市场下无功源以运行成本参与竞争,以解决现有的一部制电价对无功的运行成本补偿不足的问题;另一方面,提出一种新的无功容量电价分解方案,以解决现有的一部制电价对无功投资成本回收不明确的问题。电量电价加容量电价形成了建议的两部制无功电价。IEEE-30节点系统算例验证了建议的无功优化算法和无功价格模型的有效性和实用性。

A method to draw up the two-part tariff of reactive power for initial electricity market is proposed,which takes the power flow equation as the equality constraint,the operation and security constraints as the inequality constraints,the active power energy cost and reactive power operating cost as the objective function. The suggested interior-point nonlinear programming algorithm is simple and has little calculation. The concept of the proposed two-part tariff model is：the reactive power source in electricity market participates competition with its operating cost to avoid the deficient compensation of reactive power operating cost under existing one-part electricity pricing mode ,while a price decomposition scheme of reactive power capacity is put forward to avoid the uncertainty of reactive power investment return under existing one-part electricity pricing mode. Thus reactive power energy price plus capacity price forms the proposed two-part tariff of reactive power model. The effectiveness and practicability of the proposed optimization algorithm and price model of reactive power are verified by the calculation results of IEEE- 30 bus system. This project is supported by the National Basic Research Program （973 Program）（2004CB 217905）.