Abstract
The crisis of fossil fuel exhaustion and environmental pollution promotes the employment of distribution generators in distribution systems. The intermittent and random nature of distributed generators may bring threaten to the reliability and stability of the power grid. To improve the N-1 evaluation schema for distribution grid with DGs, an evaluation index system and comprehensive evaluation method for distribution system are proposed in this paper. Security, economy, quality and development coordination of system are analysed and used as the evaluation indexes. An evaluation framework is implemented with an analytic hierarchy process and a gray relational analysis method. The proposed index and framework were implemented tested with a modified distribution system on the CloudPSS platform. Multiple optimization objects of planning solutions for the distribution system were evaluated by the proposed frameworks. The best grid connection schema were generated based on the evaluation results. The test results demonstrate the feasibility of the proposed index system and framework.
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