Adaptive Distance Relay During Voltage Collapse

作者：Bin Abidin Ahmad Farid^*; Mohamed Azah; Shareef Hussain

来源：International Review of Electrical Engineering, 2010, 5(3): 1209-1217.

• Adaptive Setting
• Distance Relay
• Fault
• Voltage Collapse

This paper presents a new technique to prevent the false distance relay tripping during voltage instability and voltage collapse by integrating the adaptive setting of zone 3 distance relay, rate of change of voltage (d (V) over bar / dt) and voltage stability index (VSI). The existing d (V) over bar / dt approach is not able to differentiate between a fault and near voltage collapse condition and may initiate the false tripping signal. Therefore, a rigorous indicator, VSI is proposed as an additional relay feature to prevent such signals to be initiated. The performance of proposed technique is evaluated by comparing it with the dv/dt and the combination of dv/dt with system status indicator (SSI).

• 出版日期2010-6