电力市场中的电价分析与调控

电力市场中的电价具有很强的波动性,因此对电价进行监管及合理调控具有重要的现实意义.作者通过定义系统剩余容量百分比,并结合浙江电力市场数据,就系统剩余容量百分比对电价的影响进行了分析.分析结果表明:当系统剩余容量百分比小于阈值8%,就容易出现电价飞升现象;而当系统剩余容量百分比大于阈值40%,又容易出现电价明显偏低的现象,此时的电价通常低于大多数电厂的发电可变成本.另外,还进一步定义了电价上下限,并提出了应用电价上下限进行电价调控的方法.

ANALYSIS AND ADJUSTMENT OF ELECTRICITY PRICE IN ELECTRICITY MARKET

Electricity price in electricity market is strongly fluctuant, so it is important to supervise and adjust the electricity price. After giving the definition of the percentage of system surplus capacity (SSCP) and using the data from Zhejiang electricity market, the influence of (SSCP) on electricity price is analyzed. Analysis results show that when SSCP is less than the threshold of 8% the electricity price will be easily ascended, and when SSCP is more than the threshold of 40%, electricity price will obviously be too low, at this moment the electricity price is usually lower than the variable cost of most power plants. In addition, the upper and lower limits of the electricity price are further defined, and the method to adjust the electricity price by upper and lower electricity price is presented.