Effect of Distribution Generators on Stability in a Limited Bus Power Grid System

• 作者: Christoper Bin Asok Clifford Gan Thien Kit David Ting Szu Kwong Nader Barsoum
• 来源期刊: 电力能源(英文)
• 学科: 数学
• 关键词: Power Grid BUS VOLTAGES Fault CURRENTS CRITICAL Angle CRITICAL CLEARING Time Over Current Relay Setting
• 年，卷（期）: 2017,（9）
• 页码范围: 74-91
• 页数: 18页
• 分类号: O1

摘要

It has been recognized recently that when injecting renewable energy source power to a load bus which connected to a distributed feeder in a power grid system, a stability problem occurs particularly when having high fault duties that exceeding the circuit breaker ratings at some substations. In this paper an analysis of power flow, short circuit, stability and protection is given in detail to an example of limited 7-bus power grid system. Comparison is illustrated between power grid with and without distributed generators regarding bus voltages, fault currents, critical power angles, selected current transformers and over current relay settings in each bus.