電力系統(tǒng)繼電保護(hù)(英文簡(jiǎn)介).

1、Relay protection of power system -School of Energy Science and Engineering -ChenYu Introduction of power system 1 Three state of power system 2 Basic Principles and Elements of Relay Protection 3 The requirement of relay protection4 Structure Northeast Tibet North China Northwest South China Central

2、 China East China Taiwan 500KV AC(2) 2001 / 05 1200 MW 500KV DC(3) 1989 / 2003/2207 7200 MW 500KV AC(1) 2003 / 09 800 MW 120KV DC(1) 2005 / 06 360 MW 500KV DC(1) 2004 / 02 3000 MW 500KV AC(3) 2001 1900 MW 500KV AC(2) 2006 / 06 1200 MW State Grid Corporation Grid interconnection Data acquisition Data

3、 acquisition and transmissionand transmission Power system Electrical equivalent model Three state of power system Standard of Normal Standard of Normal Operation ConditionOperation Condition State of Fault State of Fault Abnormal Operation Abnormal Operation ConditionCondition 1 1 2 2 3 3 Standard

4、of Normal Operation Condition 0 0 SLjGi S Lj Gi QQQ PPP maxmin max maxmin max fff II UUU SS ijij kii kk Equality constraint ： Inequality constraint ： Abnormal Operation Condition The common abnormal state Overload Over voltage low voltage Oscillation frequency step down frequency increase State of Fault and Its Threats Chinese 220kV power transmission line fault statistics in 2008 Basic Principles and Elements of Relay Protection NAS9210 series integrated protection device NARI RCS-900 line protection device The block diagram of relay protection device Relay protection cabinet