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Power grid source steady state voltage regulating optimization method for improving transient voltage support capability of power grid

A power grid transient and steady-state voltage regulation technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve the adverse effects of transient reactive power support capacity and voltage recovery characteristics, and does not fully consider the transient state of generators and capacitors Problems such as differences in reactive power output characteristics, to achieve the effect of improving transient voltage support capability, improving safe and stable operation level, and optimizing reactive power output level of steady-state voltage regulation

Active Publication Date: 2015-05-27
STATE GRID CORP OF CHINA +2
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Problems solved by technology

This point of view does not fully consider the difference in transient reactive power output characteristics of generators and capacitors. If too many static compensation capacitors are used for voltage regulation during steady-state voltage regulation, it will affect the transient reactive power support capability and voltage recovery of the system. characteristics adversely affect

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  • Power grid source steady state voltage regulating optimization method for improving transient voltage support capability of power grid
  • Power grid source steady state voltage regulating optimization method for improving transient voltage support capability of power grid
  • Power grid source steady state voltage regulating optimization method for improving transient voltage support capability of power grid

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Embodiment Construction

[0029] A network source steady-state voltage regulation optimization method to improve the transient voltage support capability of the power grid is used to formulate an optimal coordination scheme for the steady-state reactive power output of generators and static compensation capacitors that improves the transient voltage support capability of the local power grid.

[0030] In order to achieve the above object, the present invention provides a network source steady-state voltage regulation optimization method for improving the transient voltage support capability of the power grid, including the following steps:

[0031] (1). Establish a steady-state model and a transient model for the power grid simulation calculation;

[0032] (2). Evaluate the power grid transient voltage recovery characteristics;

[0033] (3). Collect generator and static compensation capacitor data;

[0034] (4). Determine the adjustment trend to enhance the transient reactive power support capacity of...

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Abstract

The present invention provides a power grid source steady state voltage regulating optimization method for improving the transient voltage support capability of a power grid. The method comprises the steps of (1) establishing a steady state model and a transient model for the simulation and calculation of the power grid; (2) evaluating the transient voltage recovery characteristic of the power grid; (3) collecting the data of a generator and a static compensation capacitor; (4) determining the adjustment trend for enhancing the transient reactive supporting capability of the power grid; (5) making a steady state voltage regulating scheme corresponding to different power grid source steady state reactive outputs; (6) determining a steady state voltage regulating preferable scheme of the generator and the static compensation capacitor. The power grid source steady state voltage regulating optimization method for improving the transient voltage support capability of the power grid provided by the present invention can fully utilize the transient reactive output capability of a generator set to improve the transient voltage recovery characteristic of the power grid and improve the safe and stable running level of the power grid on the basis of satisfying the steady state voltage regulation.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a network source steady-state voltage regulation optimization method for improving the transient voltage support capability of a power grid. Background technique [0002] Affected by factors such as the continuous increase in the level of load power consumption and the connection of large-capacity UHV DC, the voltage stability of the power grid has become increasingly prominent and has become an important threat to the safe and stable operation of the interconnected power grid. Improving the transient voltage support capability after a large disturbance of the power grid and improving the voltage recovery characteristics are important technical measures to ensure the safe and stable operation of the power grid. [0003] The generator set and the static compensation capacitor are important reactive power sources of the power grid, and are the main means of voltage...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16
CPCY02E40/30
Inventor 郑超马世英盛灿辉林俊杰庞晓艳宋云亭丁理杰李建李晶邱丽萍申旭辉陈湘张鑫李晓珺罗红梅
Owner STATE GRID CORP OF CHINA
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