Measurement based design and observability algorithm for distributed multi-utility power system operation

With power market deregulation, companies cooperate to share one whole grid system but achieve their own economic goals. This paper focuses on how to improve the state estimation result of one company by exchanging raw or estimated data with other companies or ISO. First fundamentals to evaluate a measurement system are developed based on the concept of system redundancy index, leverage point and state estimation error variance. Then the investigations show the complexity of this interesting new topic. Accordingly a heuristic algorithm for the measurement design for distributed multi-utility operation is presented. The numerical results verify that data exchange does enhance the result of state estimation when some principles are applied.