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Selection method and device for static safety auxiliary decision-making

A technology that assists decision-making and static security. It is used in data processing applications, instruments, calculations, etc. It can solve problems such as failure to meet the requirements of power system security analysis, large error range in static analysis, and impact on power grid security and stability, and achieve elimination or suppression. Over-limit and overload phenomenon, the effect of improving static safety

Active Publication Date: 2020-06-09
TAIAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, the static analysis of the safe operation of the power system still has a large error range, and the accuracy has not yet met the requirements of the power system safety analysis, so that the power grid cannot be carried out in strict accordance with the day-ahead dispatching plan during the operation process. Execution, which in turn leads to unknown factors such as delays in maintenance plans, power plan adjustments, temporary dispatch operations, and grid failures during the operation of the power grid, which have a major impact on the security and stability of the future power grid, and also have a negative impact on social and economic benefits.
[0003] Aiming at the problem that the static analysis of the safe operation of the power system has a large error range and does not meet the requirements of the power system safety analysis, which will have a major impact on the safety and stability of the future power grid, no effective solution has been proposed yet

Method used

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  • Selection method and device for static safety auxiliary decision-making
  • Selection method and device for static safety auxiliary decision-making
  • Selection method and device for static safety auxiliary decision-making

Examples

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Embodiment 1

[0029] The embodiment of the present invention provides a static security auxiliary decision-making method, such as figure 1 As shown, the method includes the following steps:

[0030] Step S102, acquiring operation data and configuration data of each node in the simulated grid; wherein, the simulated grid runs in a manner corresponding to expected faults, and the nodes include lines and / or transformers.

[0031] Step S104, determining the expected failure of the current line according to the operating data and configuration data of each node;

[0032] Step S106, obtaining the base state exceeding limit overload information and / or exceeding limit information of the expected fault; wherein, the base state exceeding limit overload information is obtained according to the load degree of the power line, and the load of the power line can be monitored by the power monitoring personnel. Monitor and report the load level. For example, when the current of the power line reaches 80% o...

Embodiment 2

[0046] Considering that there are often limit violations caused by multiple faults in the power grid operation, the limit violation information caused by multiple fault factors is also needed in practical applications.

[0047] In practical applications, the limit violations caused by multiple faults can be divided into three situations: (1) The faults without communication are independent of each other, that is, the power adjustment of the adjustable equipment for a single fault violation does not affect other faults (2) Different faults have the same adjustment requirements for some adjustable equipment, that is, adjusting the power of its adjustable equipment for a certain fault will cause other faults to reduce the limit; (3) different There is a conflict in the adjustment measures for faults exceeding the limit, that is, adjusting the power of the adjustable equipment for a certain fault exceeding the limit will cause other faults to aggravate the limit exceeding.

[0048...

Embodiment 3

[0059] In order to facilitate further understanding of the method for selecting static security auxiliary decisions provided in the above embodiment, on the basis of the first embodiment above, the embodiment of the present invention also provides a device for selecting static security auxiliary decisions, such as Figure 4 As shown, the device includes a data acquisition module 40, an expected failure determination module 41, a failure information acquisition module 42, a branch information output module 43, an adjustable information output module 44, a sensitivity relationship establishment module 45 and an adjustment measure selection module 46, each The functions of the module are as follows:

[0060]The data acquisition module 40 is used to obtain the operating data of each node in the simulated power grid and the configuration data of each node; wherein, the simulated power grid is simulated in a manner corresponding to an expected fault, and the nodes include lines and / o...

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Abstract

The invention provides a method and a device for selecting a static security auxiliary decision, and relates to the technical field of power grid dispatching. The method comprises the steps of acquiring operation data and configuration data of each node in a simulation grid, and determining an anticipated fault of a current circuit; acquiring ground state out-of-limit overload information and / or out-of-limit information of the anticipated fault to obtain a list of branches where the nodes locate and anticipated fault information corresponding to the branches, and obtaining adjustable generators of the branches where the out-of-limit nodes locates and a load list according to an adjustment range and the anticipated fault information; establishing a sensitivity relationship; and carrying out optimization according to an adjustment amount minimum principle, and selecting an adjustment measure for the static security auxiliary decision from selectable adjustment measures. According to the method and the device for selecting the static security auxiliary decision provided by the embodiment of the invention, through analyzing the sensitivity relationship, the adjustment measure suitable for a security analysis requirement of a power system is obtained; and thus, the out-of-limit and overload phenomena of the power system are effectively eliminated or inhibited, and the static security of the power system is improved.

Description

technical field [0001] The invention relates to the technical field of power grid dispatching, in particular to a selection method and device for static security auxiliary decision-making. Background technique [0002] With the gradual formation of my country's UHV AC-DC hybrid power grid pattern, the characteristics and mechanism of power system security and stability have become increasingly complex, and the difficulty of power grid operation control has continued to increase. New requirements have been put forward for the reliability and accuracy of online security and stability analysis. . In the existing technology, the static analysis of the safe operation of the power system still has a large error range, and the accuracy has not yet met the requirements of the power system safety analysis, so that the power grid cannot be carried out in strict accordance with the day-ahead dispatching plan during the operation process. Implementation, which in turn leads to unknown f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 刘昊朱宗锋高运兴王宝松范宝丁山
Owner TAIAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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