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Method for optimizing AC/DC hybrid large-power grid

An optimization method, AC and DC technology, applied in the direction of electrical components, etc., can solve the problems of poor power grid operation flexibility, poor hybrid effect, and low throughput.

Inactive Publication Date: 2018-09-14
QUFU NORMAL UNIV
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Problems solved by technology

[0007] The existing power grid has a large load and poor stability; at the same time, the optimization efficiency is low and the grid operation flexibility is poor
[0008] The existing technology has low throughput and poor mixing effect

Method used

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  • Method for optimizing AC/DC hybrid large-power grid
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  • Method for optimizing AC/DC hybrid large-power grid

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Embodiment Construction

[0064] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0065] The existing power grid has a large load and poor stability; at the same time, the optimization efficiency is low and the grid operation flexibility is poor.

[0066] Such as figure 1 As shown, the present invention provides an optimization method for an AC / DC hybrid power grid comprising the following steps:

[0067] S101, constructing an optimization objective reflecting the low-frequency load shedding scheme of the AC-DC hybrid power grid system, and the optimization objective takes into account the frequency recovery performance and the size of the load shedding;

[0068] S102, collecting basic grid data;

[...

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Abstract

The invention belongs to the technical field of power grid optimization and discloses a method for optimizing an AC / DC hybrid large-power grid. The method disclosed by the invention comprises the following steps: collecting basic data of the power grid, and establishing a computer simulation model; establishing an optimized objective function and an optimal control calculation model by virtue of asimulated program, and acquiring the minimal optimized objective function in an optimization feasible region, so that an under frequency load shedding scheme is optimized, an optimal setting scheme is intelligently searched, the switched load capacity is minimized by considering frequency recovery performance, and transient state performance and steady-state performance of the AC / DC hybrid systemare improved. The method disclosed by the invention is simple, and the optimized construction efficiency and optimization accuracy are high. On one hand, actual operating condition of the power gridcan be monitored and simulated in the whole process, so that operating fault hidden danger information of the power grid is acquired in time; on the other hand, the optimal power grid configuration scheme is effectively acquired in time according to power user condition changes, so that the flexibility and the high efficiency of the power grid operation are effectively improved, and the construction and operation cost of the power grid can be reduced.

Description

technical field [0001] The invention belongs to the technical field of power grid optimization, and in particular relates to an optimization method for an AC-DC hybrid large power grid. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] The whole composed of substations of various voltages and transmission and distribution lines in the power system is called the power network. It includes three units of power transformation, power transmission and power distribution. The task of the power grid is to transmit and distribute electrical energy and to change the voltage. In recent years, with the continuous acceleration of China's electric power development, China's power grid has also developed rapidly. The operating voltage level of the power grid system has continued to increase, and the network scale has also continued to expand. Power grid and China Southern Power Grid have 6 large-scale regional po...

Claims

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Application Information

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IPC IPC(8): H02J5/00
CPCH02J5/00
Inventor 陈玉庆
Owner QUFU NORMAL UNIV
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