التفاصيل البيبلوغرافية
| العنوان: |
A Novel Method of Adaptive Phase-to-Phase Protection on Distribution Network with Inverter Interfaced Distributed Generators. |
| المؤلفون: |
Quan Xu, Zhiyong Yuan, Gang Xu, Guangpu Zhang, Yuehuan Lin |
| المصدر: |
Journal of Engineering Science & Technology Review; 2020, Vol. 13 Issue 4, p225-231, 7p |
| مصطلحات موضوعية: |
ELECTRIC fault location, FAULT location (Engineering), DIGITAL computer simulation, POWER resources, FAULT currents, ALGORITHMS |
| مستخلص: |
For new energy accommodation, a distribution network connected with distributed generators (DG) requires less investment and is environmentally friendly and flexible as regards power supply. However, the integration of DGs changes the characteristics of distribution network and further affects the performance of the original relays. To reveal the relay protection characteristics of a distribution network with DGs, a novel method of adaptive phase-to-phase relay protection on distribution network with inverter interfaced distributed generators (IIDG) was proposed in this study. The influences of IIDG on the fault characteristics of distribution network lines were analyzed. Moreover, this work introduced an adaptive current protection method that took advantage of the IIDG feature of only outputting a positive sequence current under faults. Meanwhile, the real time digital simulation system was adopted in this study to establish a distribution network simulation model to verify the effectiveness of the proposed method. Results demonstrate that the method can identify the fault position according to the fault location algorithm and automatically adjust the inverse time sequence current relay operating characteristics. The upper-stage and lower-stage relay operating times in the distribution network without DG are 0 and 342 ms, respectively, and with DGs are 306 and 710 ms, respectively. Thus, adaptive cooperation is achieved between the operating times of the upper-stage and lower-stage relays. The proposed method ensures operating speed and reliability of the relay and facilitates the protection of the phase-to-phase fault of a distribution network with DGs. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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