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Fundamental Study on Control and Operation of Innovative Electric Power Distribution System with a Large Penetration of Distributed Generations

分布式电源大量普及的创新配电系统控制与运行基础研究

基本信息

批准号：
14350141
负责人：
YOKOYAMA Akihiko
金额：
$ 7.62万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

In this research, we focus on abnormal voltage profile on distribution feeder, distribution system instability, unstable operation of power converters of distributed generations (DGs) caused by their mutual interference and the system frequency deviation in distribution system into which a lot of rotating machines such as synchronous generator, generating facilities with power converters such as photovoltaic generation, a kind of wind power generation, microgas turbine generation and fuel cell and power electronics based power flow controllers such as FACTS devices will be connected. For solving the above problems maintaining the current power supply reliability and cost performance, new operation, control and planning methods of the distribution system were proposed.First, a new method to control abnormal voltage profile on a high-voltage feeder with a large penetration of photovoltaic generations and wind power generations by using FACTS devices was proposed and the control performan … More ces of some kinds of FACTS devices were compared from viewpoints of their locations and minimum required capacities.Second, in order to suppress the system frequency deviation caused by a large penetration of wind power generations, a large capacity of energy stored battery was proposed to be introduced to the grid. An effective method for evaluating the minimum required MW and MWh capacity for the appropriate frequency control was developed here.Third, an introduction of superconducting generator (SCG) into the distribution system, that is, replacement of the conventional synchronous generator by SCG in the distribution system was considered for stabilizing the system unstable phenomena originating from the rotating synchronous generator and the feeder voltage fluctuation.Last, digital type of three-phase instantaneous-valued network simulator for distribution system with a lot of distributed generations was developed and was used for off-line simulation of demand-supply control in micro-grid system. This simulator is helpful for analyzing unstable operation of DG converters caused by their mutual interference and for developing the stable operation method. Less

本文主要研究了配电馈线电压分布异常、配电系统不稳定、分布式发电机组相互干扰引起的变流器不稳定运行以及配电系统中同步发电机等旋转机组、光伏发电、风力发电等带变流器的发电设施、将连接微燃气轮机发电和燃料电池以及基于功率流控制器的电力电子设备，如FACTS设备。为解决上述问题，在保证当前供电可靠性和性价比的前提下，提出了新的配电系统运行、控制和规划方法。首先，提出了一种利用FACTS装置控制光伏发电和风力发电大渗透高压馈线上异常电压分布的新方法，并从其位置和最小要求容量的角度比较了几种FACTS装置的控制效果。其次，为了抑制风力发电机组大量入网造成的系统频率偏差，提出将大容量储能蓄电池引入电网。本文提出了一种评估适当频率控制所需的最小兆瓦和兆瓦时容量的有效方法。第三，考虑在配电系统中引入超导发电机（SCG），即用超导发电机代替配电系统中的传统同步发电机，以稳定由同步发电机旋转和馈线电压波动引起的系统不稳定现象。最后，开发了数字型分布式多代配电系统三相瞬时网络仿真器，并将其用于微电网供需控制的离线仿真。该仿真器有助于分析DG变流器因相互干扰而产生的不稳定运行，为制定稳定运行方法提供依据。少