摘要
为应对新能源高比例接入引发的电网安全稳定运行风险及电力平衡难题,促进新能源有效消纳,缓解负荷峰谷矛盾,提出一种基于煤电机组功能定位的三部制电价机制。首先,分析新型电力系统下煤电机组提供的基础电力保障、新能源消纳、辅助服务三大功能;然后,分析煤电机组成本构成;其次,依据煤电机组提供的电能价值、调节价值和容量价值构建三部制电价机制,按照不同路径进行成本疏导;最后,对煤电机组的成本疏导进行不同容量补贴比例与辅助服务价格的敏感性分析。结果显示,在煤价675元/t的基准上,煤价上涨30%情景下无容量补贴、30%补贴、50%补贴时煤电总度电成本分别为42.085分/(kW·h)、39.729分/(kW·h)、38.156分/(kW·h),相较于原煤价分别上涨20.9%、22.4%、23.6%。所提出的三部制电价机制可调动机组调峰积极性,保障机组备用容量充裕度,激励机组参与系统调频服务,充分激发煤电在电力市场中的活力。
To address the risks to the safe and stable operation of the power grid and the challenges in power balance caused by the high penetration of renewable energy,while promoting the effective consumption of renewable energy and alleviating the peakvalley load disparity,this paper proposed a three-part tariff mechanism based on the functional positioning of coal-fired power units.Firstly,we analyzed the three functions provided by the coal-fired power units under the new power systems,including basic power security,consumption of renewable energy and auxiliary service.Secondly,the cost composition of coal power units was analyzed.Thirdly,a three-part tariff mechanism was constructed based on the values provided by the coal-fired power units,including power value,regulation value and capacity value,and cost pass-through was carried out via diversified routes.Finally,a sensitivity analysis of the cost pass-through of coal-fired power units was conducted under different capacity subsidy ratios and auxiliary service prices.The results show that based on a benchmark coal price of 675 yuan/ton,under the scenario of a 30%coal price increase,the total perkilowatt-hour costs for coal power would be 42.09 cents/(kW·h),39.73 cents/(kW·h),and 38.16 cents/(kW·h)respectively when implementing no capacity subsidy,30%subsidy,and 50%subsidy.Compared with the original coal price scenario,these represent increases of 20.9%,22.4%,and 23.6%respectively.The proposed three-part tariff mechanism can stimulate the initiative of power units in peak shaving,ensure the power units to provide sufficient standby capacity,and incentivize the power units to participate in the system FM service,thus fully stimulating the vitality of the coal power in the power market.
作者
汪悦萍
谭青博
赵洱岽
谭忠富
吴学辉
WANG Yueping;TAN Qingbo;ZHAO Erdong;TAN Zhongfu;WU Xuehui(School of Economics and Management,North China Electric Power University,Beijing 102206,China;School of Management,Beijing Institute of Technology,Beijing 100081,China)
出处
《中国电力》
北大核心
2025年第7期217-226,共10页
Electric Power
基金
国家自然科学基金资助项目(碳中和愿景下能源系统“源网荷储”互补运行优化模型与机制研究,72174062)。
关键词
灵活性调节
煤电机组
成本疏导
辅助服务市场
flexibility regulation
coal fired power units
cost pass-through
auxiliary service market
