Cost-Effective Grid State Identification of Mean Voltage Grids by using Sensitivity Analysis

M. Wolter (Germany)

Keywords

Decentralized generation, measurement, grid condition, sensitivity analysis, underdetermined state vector, integer optimization

Abstract

Due to decentralized generation power flow situation in low and mean voltage (MV) level grids has changed which now complicates estimation of grid condition. A satisfying identification necessitates installation of measurement technique because for historical reasons measurement devices are sparsely distributed in MV level grids. In this paper a new approach to quickly find applicable and cost-effective measurement facilities by using sensitivity analysis and integer optimization algorithms is introduced. Therefore grid equations are remodelled to fit measurable values. After that sensitivity indices are calculated to find optimal measurement locations and measurands. In this paper nodal measurements of current and power are focused.

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