Method and device for determining transmission section in consideration of key branch circuit

A technology of power transmission section and determination method, applied in circuit devices, electrical components, AC network circuits, etc., can solve problems such as large uncertainty of power flow, difficulty in manual analysis to adapt to real-time operation and analysis of the system, and inability to accurately reflect system safety characteristics, etc. , to achieve the effect of accurate safety features

Active Publication Date: 2012-07-18
GUANGDONG POWER GRID POWER DISPATCHING CONTROL CENT
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Problems solved by technology

[0006] In the provincial power system, the low-voltage level branches included in the transmission section composed of the electromagnetic ring network are often the key link that restricts the transmission capacity of the section, and because there are many low-voltage level branches, the power flow is uncertain , it is difficult to adapt to the real-time operation and analysis requirements of the system by manual analysis, and the transmission section obtained without considering the influence of key branches has the risk of not accurately reflecting the safety characteristics of the system

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  • Method and device for determining transmission section in consideration of key branch circuit
  • Method and device for determining transmission section in consideration of key branch circuit
  • Method and device for determining transmission section in consideration of key branch circuit

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Embodiment Construction

[0034] The invention introduces the key branch identification into the automatic discovery of the power transmission section, which helps dispatchers to provide monitoring objects and targets that can accurately reflect the safety characteristics of the system. The present invention will be explained in detail below in conjunction with the accompanying drawings and embodiments.

[0035] The present invention takes into account the method for determining the transmission section of the key branch, such as figure 2 shown, including steps:

[0036] Step 1. Preliminarily determine the transmission section according to the network structure and power flow state;

[0037] Step 2. Generate a transmission power constraint set for the determined transmission section;

[0038] Step 3, generating the set of sending units and the set of receiving load stations of the determined transmission section;

[0039] Step 4. Specify the iteration step size and convergence accuracy of the repet...

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Abstract

The invention discloses a method and a device for determining a transmission section in consideration of a key branch circuit. The method comprises the following steps of: preliminarily determining a transmission section in a system according to a network structure and a tidal current status, and in an analysis process for the limit transmission power of the section, identifying the key branch circuit influencing the transmission capability of the section, and returning the key branch circuit as an actual monitoring object of the section to realize the dynamic regulation of the transmission section. By the transmission section finally determined by the method and the device, the security characteristics of the system can be truly and accurately reflected.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method and device for determining a power transmission section taking into account key branches. Background technique [0002] As the scale of the power system continues to expand and its operating characteristics become more complex, it becomes increasingly unrealistic to carefully analyze and control each component in the network. Therefore, some power system operation / scheduling organizations at home and abroad take the transmission section as the actual system analysis and monitoring object to achieve dimensionality reduction control of large-scale power systems. [0003] The transmission section generally represents a cluster of transmission branches with the same active power flow direction and relatively close electrical distance in the system. With the continuous deepening of power market reform and the development of clean energy such as wind power and solar pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 高超李力李剑辉杨雄平文福拴杨燕王洁
Owner GUANGDONG POWER GRID POWER DISPATCHING CONTROL CENT
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