Predicting the prospective fault level on distribution grids and its impact on protective relaying
| Autor: | Hengxu Ha, Sankara Subramanian |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry 020209 energy Protective relay 02 engineering and technology Fault (power engineering) Equivalent impedance transforms Mesh analysis 0202 electrical engineering electronic engineering information engineering Electronic engineering Voltage source Current (fluid) business Electrical impedance Voltage |
| Zdroj: | 2017 70th Annual Conference for Protective Relay Engineers (CPRE). |
| DOI: | 10.1109/cpre.2017.8090044 |
| Popis: | With the integration of various distributed generators (DGs), traditional distribution networks have been transforming into active distribution networks (ADN). One typical challenge of the integration of DGs is that the fault current can possibly exceed the opening capacity of the related breakers. This paper presents a novel distributed solution, which can be hosted in the distributed feeder relays for on-line calculating the predictive fault level only by means of locally measured the voltage and current. Firstly, the equivalent impedance and the equivalent source voltage are calculated by the variation of the measured voltage and current. Then the predictive fault level can be obtained by the calculated equivalent impedance and source voltage of back side. Simulation results show the effectiveness of the proposed altorithm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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