摘要
针对我国持续提升风电消纳能力和实现可持续发展的目标,结合电力现货市场建设需求,研究和提出了考虑风电时空特性和相对负荷功率波动对系统运行影响的风电平衡成本分摊方法。借助“等电量-顺负荷”方法构造了零风电平衡成本等效场景,对系统进行日前优化调度,通过对比预测场景和等效场景优化调度的系统总运行成本,求解调度周期风电总平衡成本;在考虑各风电场空间分布及容量的基础上,建立了各风电场间的平衡成本分摊模型;提出了定量描述风电相对负荷波动功率时序演进特征的指标即分时段相对波动率,并给出相应的模型;基于分时段相对波动率获取局部波动影响因子对风电调度周期总平衡成本逐时段进行分摊,得到风电分时段平衡成本。以某含高比例风电地区网架结构为例,对不同风电并网容量、不同风电波动程度系统的分时段平衡成本进行了测算,验证了所提计算方法和模型的有效性。
A wind-power balance cost allocation method was developed in response to China's goal of increasing wind-power consumption capacity and achieving sustainable development,combined with the need for electricity spot market construction.The proposed method considers the spatiotemporal characteristics of wind power and the impact of relative load power fluctuations on system operation.The “equal electricity quantity following load” method was used to construct a zero-wind power balance cost equivalent scenario to optimize and dispatch system operation in advance.By comparing the predicted scenario with the equivalent scenario of the optimized dispatch,the total operating cost of wind power balance was solved for the dispatch cycle.Based on the spatial distribution and capacity of each wind power plant,a balance cost allocation model between wind power plants was established.An indicator,the relative fluctuation rate of each time period,was proposed to quantitatively express the temporal evolution characteristics of wind-power relative load fluctuations,and the corresponding model was established.Based on the relative fluctuation rate of each time period,the local fluctuation impact factor was obtained to allocate the wind-power balance cost of the dispatch cycle by time period,resulting in wind power balance costs for each time period.Using the grid structure of a region with a high proportion of wind power as an example,the balance costs of different wind-power grid capacities and fluctuation levels were calculated to verify the effectiveness of the proposed calculation method and model.
作者
何义琼
李鑫
贾海清
刘长玺
刘茹
谷旭东
雷霞
HE Yiqiong;LI Xin;JIA Haiqing;LIU Changxi;LIU Ru;GU Xudong;LEI Xia(Inner Mongolia Eastern Electric Power Trading Center Company,Hohhot 010000,China;School of Electrical Engineering and Electronic Information,Xihua University,Chengdu 610039,China)
出处
《电力建设》
CSCD
北大核心
2024年第1期157-166,共10页
Electric Power Construction
基金
国家自然科学基金项目(51877181)
国网内蒙古东部电力有限公司科技项目(526601220045)。
关键词
风电平衡成本分摊
分时段平衡成本
风力发电
优化调度
分时段相对波动率
balanced cost sharing among wind farms
time-segment balancing cost
wind power generation
optimal scheduling
time-of-day relative volatility
