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Power Flow Determination Method Considering Standby Automatic Switching Action in Static Security Analysis System

A static safety analysis and determination method technology, applied in the field of control, can solve the problems of unable to correctly simulate the automatic switching action of power grid equipment, unable to generate accident prediction text, and unable to maintain independently, so as to achieve power supply continuity analysis, which is practical and Reference value and the effect of improving emergency response capabilities

Active Publication Date: 2018-08-14
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Description
  • Claims
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Problems solved by technology

For example, when a main transformer failure occurs in a substation, the static safety analysis module and DTS cannot correctly simulate the standby and automatic operation of the real power grid, and reasonably calculate the corresponding power flow changes, and at the same time cannot generate a reasonable and usable accident prediction text
In addition, the maintenance function of the standby automatic switching model is not opened in the system, and the dispatcher cannot independently maintain the standby automatic switching operation mode

Method used

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  • Power Flow Determination Method Considering Standby Automatic Switching Action in Static Security Analysis System
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  • Power Flow Determination Method Considering Standby Automatic Switching Action in Static Security Analysis System

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] figure 1 Among them, in order to correctly simulate the action of the standby automatic switching device in the static security analysis, it is necessary to formulate the correct standby automatic switching action logic. The action logic of a single standby automatic switching device in the technical solution of the present invention is as follows:

[0052] First, judge whether the main power supply is out of power, if it is out of power, enter the next step of judgment, otherwise end;

[0053] Secondly, judge whether the backup power supply is live, if it is charged, enter the next step of judgment, if it is not charged, all power supplies are effective, and the standby self-switching action is meaningless, so the judgment ends;

[0054] Third, judge whether the current operation mode meets the action requirements of standby automatic switching...

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Abstract

The invention discloses a power flow determining method in a static safety analysis system in view of the operation of an automatic switching device of a standby power supply and belongs to the field of control. The method is characterized by setting an automatic switching device of standby power supply model in an online static safety analysis module; in the scanning of preconceived faults in the online static safety analysis module, adding an analyzing function of the operation of the automatic switching device of the standby power supply, achieving N-1 scanning after the operation of the automatic switching device of the standby power supply, computing the power flow after the operation of the automatic switching device of standby power supply and generating an accident preconceived text based on an analyzed result. By using a manner embedding power flow computation into the function of the automatic switching device of the standby power supply, the power flow determining method improves the accuracy of original power flow computation, enables a computed result to more reflect a real power flow distribution state of a power grid, has practical and reference values to dispatchers, achieves power supply continuity analysis for important electric power users, and achieves a dispatcher accident preconceive support function.

Description

technical field [0001] The invention belongs to the field of control, in particular to a method for determining a power flow in a static security analysis system. Background technique [0002] With the continuous development of modern power technology, the scale of the power network is getting bigger and bigger, and the complexity is getting higher and higher. [0003] With the increasing impact of regional natural disasters, geological disasters, environmental disasters and external damage on power grid security, higher requirements are put forward for the safe and stable operation of the power grid. The existing power grid monitoring technology cannot fully meet the needs of power grid development. In view of this situation, there is an urgent need to develop a series of practical and operable intelligent advanced applications on the intelligent dispatching technical support system to provide strong support for grid monitors to quickly handle faults, restore power supply, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00
Inventor 朱江沈豪栋李宏
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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