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电力市场中发电容量充裕性评估方法及保障机制
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作者单位:

1.华北电力大学电气与电子工程学院,北京市 102206;2.国网福建电力调度控制中心,福建省 福州市 350003

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基金项目:

国家电网公司科技项目(52130017000Z)。


Evaluation Method and Guarantee Mechanism of Power Generation Capacity Adequacy in Electricity Market
Author:
Affiliation:

1.School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China;2.State Grid Fujian Electric Power Dispatching and Control Center, Fuzhou 350003, China

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    摘要:

    随着电力市场化改革的推进和可再生能源占比的提高,如何评估并保障系统发电容量充裕性成为确保电力可靠供应的重要问题。文中提出一种可以定量计算每台发电机组充裕容量和系统发电容量充裕度的方法,从而评估机组可靠性价值和系统发电容量充裕性水平。基于发电容量充裕性评估方法和边际成本定价原理,设计一种发电容量充裕性保障机制。容量电价根据年度峰值负荷期间运行的边际机组的投资成本确定,充分考虑机组实际发电能力及系统实际需求来核定补偿容量,从而帮助发电企业在计划投资回收期内回收固定成本,保障系统发电容量充裕性。算例仿真验证了所设计的机制的有效性和适应性。

    Abstract:

    With the advancement of electricity market reform and the proportion increase of renewable energy, how to evaluate and ensure the adequacy of system power generation capacity has become an important issue to ensure reliable power supply. This paper proposes an evaluation method to quantitatively calculate the sufficient capacity of each generation unit and the power generation capacity adequacy of the system, so as to reflect the reliability value of generation unit and the level of power generation capacity adequacy of the system. Based on the evaluation method of power generation capacity adequacy and the principle of marginal cost pricing, a guarantee mechanism for power generation capacity adequacy is designed. The capacity price is determined according to the investment cost of the marginal generator operating during the peak load period of the year, and the compensation capacity is determined by fully considering the actual power generation capacity of the generator and the actual demand of the system. All these measures help power generation enterprises recover fixed costs within the planned payback period and ensure the power generation capacity adequacy of the system. Example simulations verify the effectiveness and adaptability of the designed mechanism.

    图1 可调节水电的初始容量计算Fig.1 Initial capacity calculation of adjustable hydropower
    图2 根据峰值负荷调整后的补偿容量Fig.2 Compensation capacity adjusted according to peak load
    图3 机制建立前后发电机组投资回收期的对比Fig.3 Comparison of investment payback period of power generation unit before and after mechanism establishment
    图4 充裕度变化对系统发电成本的影响Fig.4 Influence of adequacy changes on system power generation costs
    图5 煤电、燃气发电机组投资回收期的变化情况Fig.5 Changes of payback period of coal and gas generation units
    表 1 算例系统机组参数Table 1 Unit parameters of example system
    表 2 算例系统机组详细参数Table 2 Detailed unit parameters of example system
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引用本文

张粒子,许通,宋少群,等.电力市场中发电容量充裕性评估方法及保障机制[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20191223002.
ZHANG Lizi,XU Tong,SONG Shaoqun,et al.Evaluation Method and Guarantee Mechanism of Power Generation Capacity Adequacy in Electricity Market[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191223002.

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  • 收稿日期:2019-12-23
  • 最后修改日期:2020-06-22
  • 录用日期:2020-05-19
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