电热老化协同调度

This letter proposes an electro-thermal aging coordination (ETAC) concept to enhance the system’s operational performance by exploiting the current-carrying capacity potential during the thermal aging process in system dispatch decisions. First, the equivalent operating duration of the overhead conductor at its long-term permissible operating temperature (LPOT), which yields the same degree of thermal aging as that caused by the operating temperature at the dispatch period, is formulated based on the Morgan tensile strength loss model. Then, the thermal aging constraints are formulated, and the ETAC model is established by introducing the thermal aging constraints into the electrothermal coordination model, replacing the conventional LPOT constraint. Finally, case studies on a six-node system are conducted to validate the effectiveness of the ETAC concept.