Minimizing Load Shedding in Electricity Networks using the Primary, Secondary Control and the Phase Electrical Distance between Generator and Loads

Abstract

This paper proposes a method for determining location and calculating the minimum amount of power load needed to shed in order to recover the frequency back to the allowable range. Based on the consideration of the primary control of the turbine governor and the reserve power of the generators for secondary control, the minimum amount of load shedding was calculated in order to recover the frequency of the power system. Computation and analysis of the phase electrical distance between the outage generator and the loads to prioritize distribution of the amount power load shedding at load bus positions. The nearer the load bus from the outage generator is, the higher the amount of load shedding will shed and vice versa. With this technique, a large amount of load shedding could be avoided, hence, saved from economic losses, and customer service interruption. The case study simulation has been verified through using PowerWorld sofware systems. The effectiveness of the proposed method tested on the IEEE 37 bus 9 generators power system standard has demonstrated the effectiveness of this method.

A hybrid approach of artificial neural network-particle swarm optimization algorithm for optimal load shedding strategy

“…When a generator failure occurs at node n, the quantity of shedding power at m different load nodes based on PED can be distributed according to the principle: the closer the load node of the failed generator, the greater the amount of shedding power and vice versa. The expression to calculate the load reduction capacity at load nodes according to PED is shown in expression (5) [21]:…”