The development of restructuring has encouraged and brought up competitive markets in power systems. However, the exercise of market power evokes monopoly into the power system and tends to decrease competitiveness. This article assesses the market power of a generating company in a power system using must run indices and proposes a method to mitigate market power. Modified must run generation, must run share (MRS) and nodal must run share indices are used to quantify the market power of generating companies. Phase shifting transformers (PST) are installed in selected lines for mitigating the market power. Particle swarm optimization is used in the determination of must run indices and optimizing the angle of Phase Shifting Transformers. IEEE 14 bus test system is used to illustrate the proposed technique. The analysis also includes the impact of contingencies. Sensitivity analysis is performed to analyze the impact of phase shifting angle variation on MRS. The results clearly quantifies the market power of a generating company and show that the market power incurred by the generating companies can be minimized by installing PST with optimum phase shift angle.

中文翻译：

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使用基于PSO的电力系统中的市场力量分析必须运行指数

重组的发展鼓励并培育了电力系统的竞争市场。但是，行使市场支配力会引起对动力系统的垄断，并趋于降低竞争力。本文使用必须运行指标评估发电系统中发电公司的市场力量，并提出一种减轻市场力量的方法。修改后的必须运行发电，必须运行份额（MRS）和节点必须运行份额指数用于量化发电公司的市场力量。相移变压器（PST）安装在选定的线路中，以减轻市场势力。粒子群优化用于确定必须运行的指标和优化移相变压器的角度。IEEE 14总线测试系统用于说明所提出的技术。分析还包括意外事件的影响。进行灵敏度分析以分析相移角变化对MRS的影响。结果清楚地量化了发电公司的市场力量，并表明通过安装具有最佳相移角的PST可以将发电公司的市场力量最小化。