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Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium

A DC transmission system and reliability technology, applied in the direction of power transmission and AC network, etc., can solve the problem of rare technology of optimal decomposition of reliability of hybrid multi-terminal DC transmission system, and achieve the effect of realizing reasonable selection.

Inactive Publication Date: 2019-05-07
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Application Information

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Problems solved by technology

[0004] At present, in the existing research, the problem of optimal decomposition of reliability of power system is rarely considered, and the technology of optimal decomposition of reliability of hybrid multi-terminal direct current transmission system is even rarer

Method used

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  • Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium
  • Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium
  • Direct current transmission system reliability optimization decomposition method, apparatus and device, and medium

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Embodiment 1

[0049] See figure 1 , figure 1 It is a schematic diagram of the optimal reliability decomposition equipment of the direct current transmission system provided by the first embodiment of the present invention; to implement the optimal reliability decomposition method of the direct current transmission system provided by the embodiment of the present invention, such as figure 1 As shown, the DC transmission system reliability optimal decomposition device includes: at least one processor 11, such as a CPU, at least one network interface 14 or other user interfaces 13, a memory 15, at least one communication bus 12, and the communication bus 12 is used to realize Connection communication between these components. Wherein, the user interface 13 may optionally include a USB interface, other standard interfaces, and a wired interface. The network interface 14 may optionally include a Wi-Fi interface and other wireless interfaces. The memory 15 may include a high-speed RAM memory, ...

Embodiment 2

[0059] see figure 2 , figure 2 It is a schematic flowchart of a method for optimal decomposition of reliability of a direct current transmission system provided in Embodiment 2 of the present invention, including:

[0060] S11. Obtain an optimal reliability decomposition model; wherein, the optimal reliability decomposition model includes an objective function and constraint conditions;

[0061] S12. Obtain reliability parameters of the direct current transmission system components to obtain a reliability parameter vector; wherein the reliability parameter vector includes a minimum value and a maximum value of the reliability parameter;

[0062] S13. Obtain an optimal reliability parameter by using a dichotomy method according to the reliability parameter vector, the reliability optimal decomposition model, and a preset convergence accuracy.

[0063] Preferably, the optimal reliability decomposition model is obtained; wherein, the optimal reliability decomposition model in...

Embodiment 3

[0114] see Figure 5 , Figure 5 It is a schematic structural diagram of a direct current transmission reliability optimal decomposition device provided by the third embodiment of the present invention, including:

[0115] A model acquisition module 31, configured to acquire an optimal reliability decomposition model; wherein, the optimal reliability decomposition model includes an objective function and constraint conditions;

[0116] A parameter vector acquisition module 32, configured to acquire reliability parameters of the direct current transmission system components to obtain a reliability parameter vector; wherein the reliability parameter vector includes a minimum value and a maximum value of the reliability parameter;

[0117] The optimal parameter acquisition module 33 is configured to obtain the optimal reliability parameter by using a dichotomy method according to the reliability parameter vector, the reliability optimal decomposition model and the preset converg...

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Abstract

The invention discloses a direct current transmission system reliability optimization decomposition method. The method comprises the steps of: obtaining a reliability optimization decomposition model,wherein the reliability optimization decomposition model comprises a target function and a constraint condition; obtaining reliability parameters of direct current transmission system elements to obtain a reliability parameter vector, wherein the reliability parameter vector comprises the minimum value and the maximum value of the reliability parameter; and according to the reliability parametervector, the reliability optimization decomposition model and a preset convergence precision, employing a method of bisection to obtain the optimal reliability parameter. Based on the change rule of the system reliability with the monotonic change of element reliability, a bisection method solution algorithm of the optimization decomposition of the hybrid multi-terminal direct current transmissionsystem reliability is provided. On the premise of giving the system reliability index, the bisection method is employed to achieve optimization decomposition of the power system reliability for the hybrid multi-terminal direct current transmission system to perform reliability distribution and achieve the global optimization so as to achieve reasonable selection of the element reliability parameters.

Description

technical field [0001] The invention relates to the field of reliability optimization of a direct current transmission system, in particular to a reliability optimization method, device, equipment and medium of a direct current transmission system. Background technique [0002] The extremely unbalanced distribution of resources in our country has promoted the vigorous development of DC transmission technology, and the HVDC system has occupied an increasingly important position in the construction of my country's power grid. At the same time, with the development of power resources in the west, the increase of power transmission distance and the increase of power transmission capacity, the requirements for the reliability of power transmission are also getting higher and higher. The large transmission capacity of the direct current transmission system, the complex structure and operating conditions lead to its high cost. Therefore, the benefits of improving its reliability a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCY02E60/60
Inventor 李凌飞胡博黄莹伏坚何智鹏周家浩姬煜轲彭吕斌侯婷
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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