Quadrature booster for optimisation of power flow

Summary form only given as follows. In a large electrical network, the sharing of power flow through the distribution network is a day to day problem. Sometime it is felt that some of the lines are operating under its capacities and some lines are operating in the limits. In this paper a quadrature booster is being used to optimise the power flow. Location and setting of quadrature boosters are being fixed using a linear programming formulation. The impact of local loops on the global performance of quadrature boosters has been studied. The formulation of this problem is based on the active power flow equation using the nodal injection method. At any node i, the transfer of power is expressed as the sum of the product of the admittance and the voltage angles at the nodes between the i/sup th/ node and all other nodes connecting the i/sup th/ node. The transfer of power at the node is positive when flowing away from the node. Most of the transfer of power will be constant when the problem is to select quadrate booster setting to control power flows within limits. The main advantages of this method are: (1) an active power load flow solution based the linear programming method; this gives the same result as that of the conventional method of load flow; (2) power flows over one or more nominated circuits can be held within specific limits; and (3) the transfer capacity between two sections can be maximised (or minimised) with any nominated circuits or group of circuits within specific limits.