A wide-area information-based decoupling control method for power system excitation voltage
A technology of excitation voltage and power system, applied in the direction of AC network voltage adjustment, circuit device, AC network circuit, etc., can solve the problems of complex design methods and difficulty in fully adapting to real-time changes in the power grid, so as to achieve decoupling control and good promotion and application Value and Prospect Effects
Active Publication Date: 2018-07-24
武汉龙德控制科技有限公司
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Most of these methods design the excitation voltage control strategy from the local perspective of the generator, and the design method is complicated, and it is difficult to fully adapt to the real-time changes in the operating state of the power grid, which has certain risks.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] The invention mainly solves the problem of complex nonlinear coupling control of generator excitation voltage and frequency in the prior art. In order to improve the dynamic voltage response characteristics and stability level of the system, it is necessary to design a simple and effective excitation voltage control strategy. The present invention proposes a more effective method for controlling the excitation voltage of a power system based on wide-area information. This method realizes the decoupling control of the excitation voltage and frequency of the generator, and can obtain a simple and effective excitation voltage control strategy. Good promotion and application value and prospects.
[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation.
[0048] First, the present invention proposes a system equivalent simplified model based on wide-area information, as follows:
[0049]
[...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to an electric power system excitation voltage decoupling control method based on wide-area information. The method comprises the following steps: realizing the decoupling control of the excitation voltage and frequency based on the system equivalent simplified model of the wide-area information; compensating wide-area control time delay by employing a second-order Pade approximation method, and obtaining an excitation voltage decoupling control model including the time delay compensation; and converting the excitation voltage decoupling control problem to a linear quadratic type optimal control problem, and obtaining an excitation voltage control strategy. Through adoption of the wide-area information, the present invention provides an electric power system excitation voltage decoupling control method, and therefore the decoupling control of the excitation voltage and frequency of a generator is realized, the complex non-linear excitation voltage control problem is converted to a simple linear quadratic type optimal control problem, the method of rapidly obtaining an effective excitation voltage control strategy is realized, and the electric power system excitation voltage decoupling control method has good application values and popularization prospects.
Description
technical field [0001] The present invention relates to a dynamic excitation voltage control method, in particular to a decoupling control method for excitation voltage of a power system based on wide-area information Background technique [0002] Power system voltage is one of the important factors to support the safe and stable operation of the power grid. In modern power grid operation, the grid security control technology based on simplification, experience and local information is difficult to fully meet the requirements of reliable and stable operation of the grid. Establishing a voltage control method based on the system dynamic model to improve the fast dynamic voltage response characteristics of the system is of great significance to ensure the safe and stable operation of the power grid. [0003] At home and abroad, the voltage control problem is roughly divided into static voltage control and dynamic voltage control. Among them, the main means of fast dynamic vo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/12
CPCH02J3/12H02J2203/20
Inventor 徐箭崔挺孙元章黎雄鲍益廖思阳屈尹鹏
Owner 武汉龙德控制科技有限公司