【摘要】 短期内想从内部成因上消除发电厂商市场力是不现实的,因而在电力市场设计时必须考虑抑制发电厂商市场力的措施。在统一出清电价下,发电厂商常用的行使市场力的手段是持留发电容量。影响发电厂商持留容量策略的因素有:电力供应弹性、负荷需求弹性、市场份额、持留单元的发电成本。其中,后两者与发电厂商的自身因素有关,在相关抑制措施的设计时主要应从前两者着手。设置价格帽和购买单向差价合同都是从增加供应弹性的角度抑制发电厂商的持留容量行为,其中购买单向差价合同更为合理。更多还原

【Abstract】 It is unrealistic to eliminate market power of electricity market in short time. So themitigation mechanism should be taken into consideration during electricity market design. Under uniform clearing pricing method,withholding generation capacity is the most common means of abusing market power. There are four main factors affecting power suppliers’ strategies of withholding capacity,which are supply elasticity,demand elasticity,market share and operation cost of withhold unit. Because the power suppliers determine the last two,the mitigation mechanism should be designed with the view to the first two. Both setting price cap and buying one-way contract for dif-ferences(CFD) restrain market power by increasing supply elasticity,and the latter is more reasonable.更多还原