ANN based Z-bus loss allocation for pool dispatch in deregulated power system

This paper presents a procedure for ANN based Z-bus loss allocation for pool dispatch in a deregulated power system. The procedure is based on the network Z-bus matrix; although all required computations exploit the sparse Y-bus matrix. One innovative feature of ANN based Z-bus loss allocation is that, it exploits the full set of network equations and does not require any simplifying assumptions. ANN based Z-bus loss allocation is based on a solved load flow and is easily understood and implemented. Most independent system variables can be used as inputs to the neural network which in turn makes the Z-bus loss allocation process responsive to practical situations. Training and testing of this network have been done with the help of a five bus test system. Numerical examples on ANN based Z-bus loss allocation using a feed forward back propagation algorithm has been provided. A trained ANN for loss allocation requires only operational data to calculate the loss allocation at any instant.