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Method for evaluating risk of regional grid on line

A technology of risk assessment and regional power grid, applied in the field of power system, can solve the problem that the deterministic analysis method cannot take into account the random disturbance of the power system, cannot fully describe the uncertainty of failure, and the failure rate or outage rate does not consider weather and time and other issues to achieve the effect of reducing the workload and maintenance, reducing the amount of calculation, and improving standardization

Inactive Publication Date: 2012-10-03
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0005]The disadvantages of existing risk assessment models and algorithms suitable for online operation of geological surveys include: 1) Deterministic analysis methods (such as static security analysis) cannot Taking into account various random disturbances of the power system, the uncertainty of faults cannot be fully described
2) The failure rate or outage rate of outdoor components does not consider factors such as weather and time
3) At present, a lot of research has been carried out on the risk assessment of power system operation, but most of the methods are suitable for large-scale transmission network or offline grid planning research

Method used

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  • Method for evaluating risk of regional grid on line
  • Method for evaluating risk of regional grid on line
  • Method for evaluating risk of regional grid on line

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Embodiment Construction

[0039] The definition of regional smart grid dispatching technical support system is as follows:

[0040] Such as figure 2 As shown, the functional framework of the regional smart grid dispatching technical support system (D5000 system) is divided into three levels: application class, application, and function. An application class is a collection used to complete a certain type of business, and is composed of a group of applications with similar or similar business requirements; an application is a collection used to complete a certain aspect of business, and is composed of a group of closely related functional modules ; A function is used to complete a specific business requirement, and usually consists of one or more services, and the minimum function may not have a service. This specification defines three types of applications and 15 applications, and each application consists of several functional modules. It can be seen from the above figure that the regional smart gri...

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Abstract

The invention provides a method for evaluating the risk of a regional grid on line by using a D5000 system, which comprises the following steps: (1) acquiring the grid operation data and the state of a system; (2) selecting an expected fault set and analyzing the fault; (3) judging the effect caused by the grid according to the expected fault, carrying out the step (4) if the power supplying risk appears, and otherwise, returning to the step (2); and (4) calculating the risk indicator and the prompting risk according to the risk indicator. According to the method for evaluating the risk of the regional grid on line, the probability of the current state of the system, the probability of the possibility of the fault and the severity of the fault are considered comprehensively, so as to help the dispatchers to analyze and find out the potential risk of the system.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to an online risk assessment method for a regional power grid. Background technique [0002] The safety analysis module in EMS has long adopted the deterministic analysis framework proposed in the 1960s, but it cannot account for various random disturbances in the power system, and cannot fully describe the uncertainty of faults. The traditional power system reliability analysis uses the probability evaluation method to study the uncertainty of the power system, but its main application field is the long-term planning of the power system, which is mainly used for offline analysis, and cannot be used for real-time judgment of the power system operating status , and the purpose of operational risk assessment is to use the current grid operation and equipment information to predict the system operational risk for a period of time (minutes to several hours) in the future and pro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00G06Q50/06
Inventor 李静贾育培罗雅迪郎燕生邹昱王前
Owner CHINA ELECTRIC POWER RES INST
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