Abstract
In this paper, transient stability analysis was focused on Hu-Liao HVDC and AC parallel transmission system. The Hu-Liao HVDC project was introduced; Simulation method and mathematic models of AC and DC systems were stu-died as well as corresponding regulators and controllers. The dynamic performance and the interaction between AC and DC systems during serious disturbance were researched by detail time-domain simulation. Comparison was also made under different operation schemes. The research will bring important and significant reference for further operation and stability control of Hu-Liao HVDC and AC system.
Highlights
Transient stability analysis was focused on Hu-Liao HVDC and AC parallel transmission system
Since the first High Voltage Direct Current transmission project was commissioned into commercial operation in 1954, HVDC has been developed so rapidly that it has been widely applied in such fields as large power transmission over long distance, interconnecting two asynchronous systems, power transmission through submarine cables for supplying power to islands and so on
The dynamic performance and the interaction between AC and DC systems during serious disturbance were researched by detail simulation
Summary
Since the first High Voltage Direct Current transmission project was commissioned into commercial operation in 1954, HVDC has been developed so rapidly that it has been widely applied in such fields as large power transmission over long distance, interconnecting two asynchronous systems, power transmission through submarine cables for supplying power to islands and so on. In reference [3,4,5,6], the interaction action between AC and DC parallel transmission system were studied, the theory and operation rules of such power system were demonstrated with simulation examples. In reference [7,8,9], research on advance control strategy for a HVDC scheme in parallel operation with AC systems was discussed. By these unconventional control strategies, the HVDC scheme can actively participate in the instantaneous rescheduling of power and improve the dynamic performance of power network. In reference [10,11], a real AC and DC parallel transmission system in South China was studied from operation and control aspects. The research will bring important and significant reference for further operation and stability control of HuLiao HVDC and AC system
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