- 學位論文
差動式保護電驛之性能模擬與測試
Performance Simulation and Testing of Differential Protective Relays
摘要
差動式保護電驛乃為快速動作型保護電驛，故在電力系統保護協調應用上可做為主保護，不需與下游保護電驛做協調；且因差動式保護電驛與過電流電驛保護相似，均可應用於電力系統各種不同電力設備之保護。但電力設備內部故障如由過電流電驛保護，則可能因故障隔離清除時間較長，致使輕者因電磁及機械力量使得結構產生變化，重者導致電力設備產生電弧、起火，進而造成開關器具燒損或套管炸毀。所以使用差動電驛快速隔離電力設備之內部故障乃為保護電力系統及設備最有效之方法。 本文係以電磁暫態模擬程式結合電力系統模擬器F6150，來研究電力系統發生事故過程中之暫態行為對差動式保護電驛之影響，進而改善電驛標置，防治保護電驛於故障過程中之誤動作，並以實體模型為基礎，實現保護電驛暫態性能試驗之數位化。
並列摘要
The differential relays are the fast movement types to protect the electric systems. Therefore, it can be the main protection using in the power system, and doesn’t need to coordinate with the other electric protection. In addition, the differential relays protected the electric system is similar to the over-current relays. Both apply to the protection of different kinds of electric equipment in power system. However, when the electric equipment, which is protected by over-current relays, occurs troubles, it takes more time to alienate and remove those faults. Hence, it lighter changes structure due to electromagnetic and mechanical strength. It may get serious to produce electric arc and fire in electric equipment so as to result in the destruction of the switch equipment or the explosion of sleeve pipe. Hence, the electric differential relays are the most efficent way to rapidly isolate inner troubles in electric equipment and to protect power system. This thesis is using electromagnetic transients program to combine with simulator F6150 in order to investigate the influence of temporary behavior in accidental process of power system on the electric differential relays, and then to improve the electric relays to mark and put, and to prevent and protect electric mistakes in the process of troubles. The project is based on practical model to realize the digitalization of protecting the electric transients performance.