Abstract
This paper studies the reactive power and voltage coordinated control scheme. According to the characteristics of Hunan power grid, the coordinated schemes about Hunan power grid with Central China Power Grid, as well as Changsha power grid are proposed. At the same time, this paper builds a two-way interactive and multiple dispatching reactive power and voltage coordinated control mode, and can be successfully applied in Hunan power grid. The operation results show that this control scheme fulfills the ability of large power grids in optimal allocating of resources, effectively integrates the reactive power resources of the entire grid, achieves the purpose of reducing power grid loss, improving voltage quality, reducing the operating numbers of the reactive power equipment.
Highlights
In recent years, the scale of state grid is gradual expanding, but each dispatching center only administers a local part of the entire power grid
This paper studies the reactive power and voltage coordinated control scheme
The operation results show that this control scheme fulfills the ability of large power grids in optimal allocating of resources, effectively integrates the reactive power resources of the entire grid, achieves the purpose of reducing power grid loss, improving voltage quality, reducing the operating numbers of the reactive power equipment
Summary
The scale of state grid is gradual expanding, but each dispatching center (area dispatching, provincial dispatching, regional dispatching) only administers a local part of the entire power grid If these dispatching control centers are independent in the implementation of voltage and reactive power control, it will not take full advantage of the power grid in resource optimal allocation, resulting in unnecessary waste of energy and the overall optimal control result is not satisfactory. Even may be appearing the situation which the regulated effect is contrary between the interconnected grids, resulting in repeated adjustment of the control device It affects the life of the equipment, and can not ensure the quality of the voltage. Taking Hunan power grid for example, verifying the effectiveness of the coordinated control according to this method
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