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When emergency controls cannot keep the stability of the whole system, it is a critical and efficient way to split the whole system into several small isolated islands. Moreover, the generators in the same island are synchronous. In this work, a mixed integer linear programming (MILP) model is set up to analyze the splitting strategies for power system islanding operations with the objective of minimizing...
The need to increase situational awareness in power systems is more evident than before. Increased power system complexity and integration of intermittent resources have contributed to the emerging need to monitor power systems in real time. Real time contingency analysis can increase situational awareness by monitoring the power system in real time and alarming the operators of the impending problems...
An embedded HVDC system is a HVDC link connected in parallel with an AC transmission line or a mashed AC system. This paper proposes a control strategy cooperating with conventional d-q vector control for embedded HVDC system. The novel control method employs frequency features at two terminal stations to eliminate power oscillation. Dynamic simulation models are constructed in PSCAD platform to compare...
This paper presents some results of our ongoing research on the dynamic performance of the Vietnam power system. The study involves simulations of N−1 events in the 500–220kV transmission system, especially the loss of an 500kV circuit, which in reality has caused a large scale blackout in the Southern grid of Vietnam, in May 2013. The simulations reveal some interesting results, regarding the operation...
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