Title :
Coordination protection for DC distribution network in DC zonal shipboard power system
Author :
Fang Ming ; Fu Lijun ; Wang Ruitian ; Ye ZhiHao
Author_Institution :
Nat. Key Lab. for Vessel Integrated Power Syst. Technol., Naval Univ. of Eng., Wuhan, China
Abstract :
In the DC zonal shipboard power system (DC-ZSPS), DC/DC power conversion module (DD-PCM) which is composed of ship service conversion module (SSCM) powers DC loads. This paper presents solutions to the coordination problems caused by the mismatch between the self-protection of DD-PCM and the time-overcurrent protection of the distribution network. The structure design of SSCM aims for the backup protection and the isolation of SSCMs one another. A current limiting control strategy of SSCM is presented to coordinate the time-overcurrent protection principle for the distribution network. A high fidelity DC-ZSPS model is established in PSCAD/EMTDC. Then, the faults in the SSCM and the distribution network are simulated. The results show that the method achieves rational coordination between the protection of DD-PCM and the downstream over-current protection and meets the requirements of selectivity and reliability.
Keywords :
DC-DC power convertors; current limiting reactors; distribution networks; marine power systems; DC distribution network; DC zonal shipboard power system; DC/DC power conversion module; coordination protection; current limiting control strategy; ship service conversion module; time-overcurrent protection; Delay; Fuses; Insulated gate bipolar transistors; Limiting; Power systems; Relays; Voltage control; DC zonal shipboard power system; coordination protection; current limiting control; ship service conversion module;
Conference_Titel :
Advanced Power System Automation and Protection (APAP), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-9622-8
DOI :
10.1109/APAP.2011.6180438
