风电接入后电网调频服务与补偿分摊研究

发布时间：2018-02-23 21:34

本文关键词： 风电调频风电补偿不平衡结算联合运行　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：风力资源作为可持续发展战略重要的补充能源,具有很大的利用价值,但由于风力资源的本身的多变性造成了风力发电中许多问题。因此在风电接入系统后,其出力的变化率是决定其接入系统频率是否稳定的一个重要因素。在较开放成熟的电力市场中,发电、输电和配电是相互独立的市场主体,其目标是实现各自的利润最大化,但是各自追求利润最大化的同时可能会对整个电力系统运行产生安全隐患,因此在成熟的电力市场纷纷对调频服务引入新的获取和定价的方法。我国的电力市场尚处于初级阶段,辅助服务市场尚未引入竞争机制,辅助服务机制是“按需调度,基于成本进行补偿”,重点强调了对提供辅助服务机组的补偿问题,但对风电机组引发系统辅助服务的经济补偿问题尚未涉及。而目前执行的辅助服务补偿分摊机制,是基于常规能源满足负荷波动的前提下的,由于风电等可再生能源并网带来的调频服务需求增量并不在常规电源服务义务范围之内,应按一定原则予以补偿。随着风电大规模接入电网,迫切需要考虑风电并网后引发辅助服务而出现的经济利益关系调整问题。针对以上问题,本文通过分析国外风电渗透率较高的国家对风电的政策支持以及其电力市场中调频服务的交易方式,通过对风电调频需量的测算和通过风电获取调频服务改善电网频率波动性。基于了绩效理论提出了以调节里程为量化指标的调频绩效费用评估方法。再进一步根据区域控制偏差与机组出力的关系,提出了调频动作的正确性和有效性判据,据此提出了调频贡献度的概念和计算方法。提出了计划体制下基于调频贡献度的调频服务补偿和分摊方式,以及市场化体制下调频服务的市场化获取手段,建议风电企业通过双边合同的方式从传统能源发电企业获取调频服务。通过算例分析了风电接入后对电网频率稳定的影响,根据不平衡结算机制测算了风电直接与电网结算时所需承担的调频服务费用,通过风电与火电联合运行的分钟级出力曲线,计算了其调频总里程和有效里程,再根据贡献度进行了补偿费用的分摊。
[Abstract]:Wind energy, as an important supplementary energy for sustainable development strategy, has great value of utilization. However, due to the variability of wind resource itself, there are many problems in wind power generation. Therefore, after wind power is connected to the system, In a more open and mature power market, power generation, transmission and distribution are independent market players whose goal is to maximize their respective profits. However, while pursuing the maximum profit, each may have a hidden danger to the operation of the whole power system at the same time. Therefore, new methods of obtaining and pricing FM services have been introduced in the mature power market. China's electricity market is still in the primary stage, and the auxiliary service market has not yet introduced a competitive mechanism, the auxiliary service mechanism is "on demand scheduling," Compensation based on cost "emphasizes the problem of compensation for auxiliary service units, but the problem of economic compensation for auxiliary services caused by wind turbines is not yet involved. It is based on the premise that conventional energy can meet the load fluctuation, because the increase of FM service demand brought by the connection of renewable energy such as wind power is not within the scope of the service obligation of conventional power supply. It is necessary to compensate according to certain principle. With the large-scale access of wind power to the power network, it is urgent to consider the adjustment of economic benefits caused by wind power grid connection. This paper analyzes the policy support of wind power in foreign countries with high wind power penetration and the transaction mode of FM service in their electricity market. Based on the performance theory, this paper puts forward a method to evaluate the frequency regulation cost of the frequency modulation system based on the performance theory, which is based on the calculation of the frequency regulation requirement of wind power and the improvement of the frequency fluctuation through the acquisition of the frequency modulation service by the wind power generation. According to the relationship between regional control deviation and unit output, In this paper, the correctness and validity criterion of FM action is put forward, the concept and calculation method of FM contribution degree are put forward, and the compensation and allocation method of FM service based on FM contribution degree under the planning system is put forward. The paper also suggests that wind power enterprises obtain FM services from traditional energy generation enterprises through bilateral contracts. The influence of wind power access on power grid frequency stability is analyzed through an example. According to the unbalanced settlement mechanism, the paper calculates the cost of FM service when wind power and power grid settle directly, and calculates the total mileage of frequency modulation and effective mileage of wind power and thermal power through the minute output curve of joint operation of wind power and thermal power. Then according to the contribution of the compensation cost allocation.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F426.61;TM614

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