考虑分布式电源接入的配电网检修决策优化
发布时间：2019-06-24 10:35
【摘要】：配电设备的检修是保证供电可靠性和经济性的必要措施,检修计划的合理与否,不仅仅影响着供电企业的和用户的利益,更对社会有着深远的影响。随着技术的发展,配电设备的检修会遇到更多新的挑战,当前阶段主要挑战有两个方面,其一为状态检修技术的发展,要求检修计划的制定需要从设备健康状态出发,统筹检修设备个体与配电网整体运行的利益;另一个挑战为分布式电源技术的发展,配电网中越来越多地接入分布式电源,其出力不确定性的特点,给检修工作带来了巨大挑战,最为突出的一点体现在负荷转移方案的可靠性上。在总结配电网状态检修和考虑分布式电源出力不确定性的负荷转移已有研究成果基础上,本文针对上述两个问题,分别进行了矛盾关系分析,梳理出矛盾变量,构建了基于博弈理论的负荷转移模型和状态检修决策模型,主要研究内容如下:(1)经过对分布式电源出力的观察与总结,得到分布式电源出力不确定性的特征,在分布式电源出力不确定性的基础上,分析不确定性对配电网负荷转移的影响。分布式电源出力的增大与减小,都会引起配电网运行约束的破坏,并且影响经济性。采用博弈策略来解决考虑分布式电源出力不确定性的配电网负荷转移问题。将分布式电源出力的不确定性虚化为 大自然‖控制的博弈手段,建立了由决策者与大自然构成的两参与者序贯行动博弈模型。最终通过改进博弈树方法求解所建博弈模型的纳什均衡解,得到考虑分布式电源出力不确定性的配电网负荷转移方案。(2)配电网设备运行状态与检修状态的矛盾主要体现在设备既应当多安排运行以保障配电网运行的经济性,又应当多安排检修以保证可靠性。在此矛盾上进一步探究配电网状态检修中检修与运行协调决策的相关理论,构建了以检修设备数目为核心变量、以检修总支出最小为目标的动态化检修过程,并充分考虑分布式电源出力的不确定性。首先提出了基于博弈理论的负荷转移模型以解决新能源电源出力不确定性问题,再此基础上提出了基于博弈理论的状态检修模型以解决检修与运行协调理论的矛盾性问题,最后将二者统一于含源配电网状态检修的工作中,完成方案的制定。最后给出状态检修决策优化模型的的启发式求解方法。(3)针对基于博弈方法的负荷转移模型,采用IEEE33节点算例进行方法有效性验证,并进行详细的对比验证和鲁棒性分析;针对基于博弈方法的配电网检修决策模型,采用IEEE33节点算例,给出启发式算法的具体求解过程进行有效性验证,并与传统检修优化方法得到的结果进行对比分析,同时进行方案的鲁棒性分析。
[Abstract]:The overhaul of the power distribution equipment is the necessary measure to ensure the reliability and economy of power supply. The rationality of the overhaul plan not only affects the interests of the power supply enterprises and the users, but also has a far-reaching influence on the society. With the development of the technology, the maintenance of the power distribution equipment will meet more new challenges, and the main challenges in the current phase are two aspects, one is the development of the state maintenance technology, and the development of the maintenance plan requires the development of the equipment health state. The other challenge is the development of the distributed power supply technology, the more and more access to the distributed power supply in the distribution network, the characteristics of the output uncertainty, and the great challenge to the maintenance work. The most prominent point is the reliability of the load transfer scheme. On the basis of summarizing the existing research results of the distribution network state maintenance and considering the load transfer of the distributed power output uncertainty, this paper analyzes the contradiction between the above two problems, and then sorts out the contradictory variables. The load transfer model and the state maintenance decision model based on the game theory are constructed. The main contents are as follows: (1) After the observation and summarization of the distributed power output, the characteristics of the distributed power output uncertainty are obtained, and on the basis of the uncertainty of the output of the distributed power supply, The influence of uncertainty on load transfer of distribution network is analyzed. The increase and decrease of the distributed power output can cause the operation of the distribution network to be destroyed, and the economy is affected. A game strategy is used to solve the load transfer problem of the distribution network considering the uncertainty of the output of the distributed power supply. The uncertainty of the distributed power output is transformed into the game means of the control of the nature, and a two-participant sequential action game model consisting of the decision maker and the nature is established. And finally, solving the Nash equilibrium solution of the established game model by improving the game tree method, and obtaining a distribution network load transfer scheme which takes into account the uncertainty of the output uncertainty of the distributed power supply. (2) The contradiction between the operation state and the service condition of the distribution network equipment is mainly reflected in the fact that the equipment should be arranged so as to guarantee the economy of the operation of the distribution network, and the maintenance should be arranged more and more to ensure the reliability. In this contradiction, the relevant theory of maintenance and operation coordination decision-making in the state maintenance of distribution network is further explored, and the dynamic maintenance process is constructed based on the number of maintenance equipment as the core variable to minimize the total expenditure, and the uncertainty of the output of the distributed power supply is fully considered. First, a load transfer model based on the game theory is put forward to solve the problem of the uncertainty of the output of the new energy power supply, and then a state maintenance model based on the game theory is put forward to solve the contradiction problem of the theory of maintenance and operation coordination. And finally, the two are unified in the work of the state maintenance of the source distribution network, and the development of the scheme is completed. At last, the heuristic method of state maintenance decision-making optimization model is given. (3) Aiming at the load transfer model based on the game method, the method validity verification is carried out by adopting an IEEE33 node numerical example, and the detailed comparison verification and the robustness analysis are carried out; and the IEEE33 node numerical example is adopted for the power distribution network maintenance decision model based on the game method. In this paper, the effectiveness of the heuristic algorithm is verified and compared with the results obtained by the traditional maintenance and optimization method, and the robust analysis of the scheme is carried out.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73
[Abstract]:The overhaul of the power distribution equipment is the necessary measure to ensure the reliability and economy of power supply. The rationality of the overhaul plan not only affects the interests of the power supply enterprises and the users, but also has a far-reaching influence on the society. With the development of the technology, the maintenance of the power distribution equipment will meet more new challenges, and the main challenges in the current phase are two aspects, one is the development of the state maintenance technology, and the development of the maintenance plan requires the development of the equipment health state. The other challenge is the development of the distributed power supply technology, the more and more access to the distributed power supply in the distribution network, the characteristics of the output uncertainty, and the great challenge to the maintenance work. The most prominent point is the reliability of the load transfer scheme. On the basis of summarizing the existing research results of the distribution network state maintenance and considering the load transfer of the distributed power output uncertainty, this paper analyzes the contradiction between the above two problems, and then sorts out the contradictory variables. The load transfer model and the state maintenance decision model based on the game theory are constructed. The main contents are as follows: (1) After the observation and summarization of the distributed power output, the characteristics of the distributed power output uncertainty are obtained, and on the basis of the uncertainty of the output of the distributed power supply, The influence of uncertainty on load transfer of distribution network is analyzed. The increase and decrease of the distributed power output can cause the operation of the distribution network to be destroyed, and the economy is affected. A game strategy is used to solve the load transfer problem of the distribution network considering the uncertainty of the output of the distributed power supply. The uncertainty of the distributed power output is transformed into the game means of the control of the nature, and a two-participant sequential action game model consisting of the decision maker and the nature is established. And finally, solving the Nash equilibrium solution of the established game model by improving the game tree method, and obtaining a distribution network load transfer scheme which takes into account the uncertainty of the output uncertainty of the distributed power supply. (2) The contradiction between the operation state and the service condition of the distribution network equipment is mainly reflected in the fact that the equipment should be arranged so as to guarantee the economy of the operation of the distribution network, and the maintenance should be arranged more and more to ensure the reliability. In this contradiction, the relevant theory of maintenance and operation coordination decision-making in the state maintenance of distribution network is further explored, and the dynamic maintenance process is constructed based on the number of maintenance equipment as the core variable to minimize the total expenditure, and the uncertainty of the output of the distributed power supply is fully considered. First, a load transfer model based on the game theory is put forward to solve the problem of the uncertainty of the output of the new energy power supply, and then a state maintenance model based on the game theory is put forward to solve the contradiction problem of the theory of maintenance and operation coordination. And finally, the two are unified in the work of the state maintenance of the source distribution network, and the development of the scheme is completed. At last, the heuristic method of state maintenance decision-making optimization model is given. (3) Aiming at the load transfer model based on the game method, the method validity verification is carried out by adopting an IEEE33 node numerical example, and the detailed comparison verification and the robustness analysis are carried out; and the IEEE33 node numerical example is adopted for the power distribution network maintenance decision model based on the game method. In this paper, the effectiveness of the heuristic algorithm is verified and compared with the results obtained by the traditional maintenance and optimization method, and the robust analysis of the scheme is carried out.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73
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