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Abstract
It is important to estimate the responsibility attributed to each generator in a deregulated environment. As a consequence, methodology for estimating the usage of the transmission system is indispensable. This paper proposes a method for tracing the output current as well as the output power of individual generators in the power grid. The method is based on a principle of proportional sharing of complex power (PSCP), which is proven to be in conformity with the circuit theorem. By using a 4‐bus system, the application of the proposed principle is elaborated step by step. The contributions of each generator on branch flows, branch losses, and bus flows can be calculated. The tracing results, based on the principle of proportional sharing of active power (PSAP), are also evaluated for comparison. Taking the results of PSCP as a benchmark, a deviation of up to 27% from PSAP has been found. The deviation becomes significant when tested on the IEEE 118‐bus system. In addition, the proposed PSCP is feasible to implement. As a consequence, it is obvious that these interesting points are likely to justify the further application of PSCP.
Notes
Correspondence addressee