Research on Technical Management of Distributed Generators based on Decentralized Supply Responsibility

本研究项目旨在研究一种新的框架，以便在控制每个社区内分布式发电机的当地独立系统运营商之间分散供应责任。主要研究结果如下：通过引入EMC （Energy Management Center）安装的储能系统和配电网与用户之间的功率转换装置，实现分布式发电机的平滑输出，维持规定电压，实现孤岛区域内的持续供电。研究了利用通信网络直接或间接控制emc和客户参与系统运行的技术管理。结果表明，EMC引入电力实时定价可以减少系统操作员对负荷频率控制的责任，提高负荷因数。模拟了分布式发电机对供电和备用电源的贡献方法，并对其进行了定量评价。结果表明，系统操作员为电力供应和控制准备的装机容量可以减少。研究还发现，根据客户需求调整可靠性比统一调整可靠性更经济。通过建立本地配电系统可靠性、系统故障时的电能质量和降低成本的评估方法，为分布式发电机和储能系统的引进提供咨询服务的可能性。建立了基于基本交易规则的市场仿真模型，并考虑了局部区域与系统运营商之间的电力交换。针对放松管制下保障营运准备金这一重要问题，提出并评价了两种基本解决方案。对配电网可靠性进行了两种评估，分别是由各EMC直接负责供电和由当地独立系统运营商负责供电。结果表明，前者有利于降低社会成本。少

This research project aimed to investigate a new framework for decentralizing supply responsibility among local independent system operators which control distributed generators within each community areas.The brief results are as follows :1. By introducing Energy Management Center (EMC) installed energy storage systems and power conversion devices between distribution network and customers, smoothing power outputs of distributed generators, maintaining specified voltages and continuing power supply within islanded area are enabled.2. Technical management of EMCs and customers to participate them in system operation by direct or indirect control using communication network was investigated. As a result, it was conformed that the liability of system operator for load frequency control could be reduced and load factor would be improved by EMC introducing real-time pricing of electric energy.3. Contribution method of distributed generators for power supply and reserves was simulated and e … More valuated quantitatively. As a result, it was revealed that the installed capacity prepared by system operator for electric energy supply and control could be reduced. It was also revealed that regulating reliability depended on customer's needs was more economical than regulating uniformly.4. Possibility of consulting service about introduction of distributed generators and energy storage systems was presented by developing evaluation method for local distribution system's reliability, power quality against system faults and cost reduction.5. Market simulation model based on essential trading rules was developed considering power exchange between local areas and system operator. Two basic solutions for the important issue to secure operation reserves under deregulation were developed and evaluated.6. Assessment of distribution network reliability was carried out in two cases that each EMC took responsibility for power supply directly and local independent system operator which supervised EMCs in the area took it. It was conformed that the former is favorable for social cost. Less