Method and device for evaluating operation risk of direct-current power transmission system

A DC transmission system and operation risk technology, applied in data processing applications, instruments, calculations, etc., can solve difficult pre-prediction problems and achieve the effect of improving coping capabilities

Active Publication Date: 2021-09-07
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing methods are based on the evaluation of grid risk and equipment reliability. From the perspective of impact on the grid, it is difficult to predict the grid risk in advance. Equipment reliability mainly considers the impact of the weather environment, not from the operating status of the DC itself. limitations

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  • Method and device for evaluating operation risk of direct-current power transmission system
  • Method and device for evaluating operation risk of direct-current power transmission system
  • Method and device for evaluating operation risk of direct-current power transmission system

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.

[0046] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an"...

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Abstract

The invention provides a method and device for an evaluating operation risk of a direct-current power transmission system. The method comprises the following steps: calculating an action risk coefficient of each protection and a power loss amount of an action outlet of each protection; determining an operation risk value of the direct-current power transmission system according to the action risk coefficient of each protection and the power loss amount of the action outlet of each protection, wherein the action risk coefficient of one protection and the power loss amount of the action outlet are calculated by the following steps: acquiring a criterion amount for protection calculation in a direct current control protection system in real time; calculating an action risk coefficient according to the criterion quantity and a preset threshold value corresponding to the criterion quantity; and calculating the power loss amount of the action outlet of the protection according to the direct current operation mode, the power level information and the action outlet characteristics of the protection, which are acquired in real time. According to the method and device, the direct current operation risk weak point is given by monitoring the direct current protection action risk state in real time, so that the direct current operation risk is evaluated in real time, and the coping capacity can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of DC transmission system operation risk assessment, in particular to a DC transmission system operation risk assessment method and device. Background technique [0002] With the construction of large-capacity, long-distance DC transmission projects in China, my country's power grid has formed a large-scale AC-DC hybrid pattern, and the operating status of DC transmission has a major impact on the security and stability of the AC-DC complex large power grid. How to ensure the safe and reliable operation of (ultra) high-voltage direct current and flexible direct current and other types of direct current transmission systems is of great significance. [0003] Strengthen the real-time monitoring of DC operating status, establish a real-time assessment system for DC operating risks, and understand the operating status and main risks of UHV DC, which can effectively improve the risk perception and pre-control cap...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y02E60/60
Inventor 苗璐杨诚易杨王延纬龙霏罗超郭琦卢远宏李书勇朱益华林雪华刘志江曾冠铭
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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