基于供电服务质量的微网参与配网电力交易问题研究

Integrating Microgrids into the distribution grid can better distribute the energy resource to supply the users, with lower voltage levels and shorter distance for energy transmission. Accordingly, it can decrease the power loss caused by the transmission, improve the quality of services for power supply, save the investment as well as protect the environment. The development of Microgrids in China has been impeded due to the lack of necessary mechanism for Microgrids to participate into the energy trading at the distribution grid level. Thus, based on the concept of quality of service based energy trading, this project focuses on following research areas: the mechanism of energy trading for the distribution grid with the integration of Microgrids, the price model for quality of services based energy trading and corresponding trading algorithms, and the design of platform for energy trading. The key issues regarding the energy trading of the distribution grid with the integration of Microgrids, such as energy market splitting, price model, distribution congestion management will be addressed in this project, which can facilitate the Microgrids to participate into energy trading at the distribution grid level. The research of this work will be helpful to establish the methodology that can encourage more and more Microgrids to participate into the energy trading, which will greatly benefit the development of Microgrids in China.

微网接入配电网可使电力供应的电源分布更均匀，电压等级低，层次少，电力输送距离短，因此可在一定程度上减小电能损耗，提高供电服务质量，在节省投资的同时减小对环境的影响。但由于缺乏相关理论研究及相应的电力交易机制引导，微网的建设和发展在我国开展得比较缓慢。因此本项提出以供电服务质量为导向的微网参与配网电力交易的思想，研究：基于供电服务质量的微网参与配网电力交易的机制设计问题；基于供电服务质量的配网电价策略问题； 含微网的配电网电力交易算法与模拟交易平台设计问题。项目通过解决微网参与配网电力交易关键问题如市场分割、价格模型、阻塞管理等为微网参与配网交易提供理论基础和关键技术支撑，预期成果有利于构建合理的交易体系以激励微网参与配网的交易，从而总体上引导我国微网健康地建设与发展。

微网接入配电网可可使电力供应的电源分布更均匀，电压等级低，层次少，电力输送距离短，因此可在一定程度上减小电能损耗，提高供电服务质量，在节省投资的同时减小对环境的影响。但由于缺乏相关理论研究及相应的电力交易机制引导，微网的建设和发展在我国开展得比较缓慢。因此本项提出以供电质量为导向的微网参与配网电力交易的思想，主要研究供电服务质量定义、基于供电服务质量的微网参与配网电力交易问题、微网参与配网电力交易的阻塞管理、微网最优电量追踪、微网参与配网的电力交易的模拟平台开发等五个方面的问题。项目根据微网接入配网时网络结构特点及微网中电源的出力特性，利用源流分析法得到用户可靠性，利用可靠性表征微网用户供电服务质量，从而在此基础上建立的考虑用户供电服务质量的电力交易模型；由于配网通道有限，多微网接入配网后面临阻塞问题，项目提出在日前和日内两个时间尺度上对微网进行阻塞管理，日前利用价格机制调节微网购售电量，日内利用最优电量追踪方法实现微网偏差电量的管理；对于多微网参与配网交易问题交易算法实现，项目考虑微网及配网各自的独立性，采用利用简单拍卖法实现交易，并基于Java多代理开发平台(Java Agent DEvelopment, JADE)开发了微网参与配网交易的模拟电力交易平台项目通过解决微网参与配网电力交易关键问题如市场分割、价格模型、阻塞管理等为微网参与配网交易提供理论基础和基础支撑，有利于构建合理的交易体系以激励微网参与配网的交易，从而总体上引导我国微网健康地建设与发展。