Deregulation analytics for security assessment in IEEE 118-bus system using modular power flow

Special operating conditions arise in deregulated systems. Generators pump scheduled powers as determined by the market into the grid. System operator has to assume responsibility for secure operation. For commercial reasons generator bids are generally pinned at maximum capacities. Q-capabilities are severely curtailed. Specifying PV bus voltages which generator owners are not obliged to adhere to, gravely affects reliability of a conventional load flow. There is no scope for specifying a slack generator. Which owner will like to be a slack generator? We conduct a hypothetical case study on the 118 bus IEEE test system as if it were fully deregulated. Simple formulae reported in recent past are used to determine voltages and line flows. Formulae work directly on data and provide quick results. System operator can find line-flows and voltages to assess security of the system off-line as well as online.