Method and system for rapid self-healing of power grid

A power grid, fast technology, applied in power network operating system integration, information technology support system, AC network voltage adjustment and other directions, can solve the problem of lack of qualitative and quantitative evaluation models and methods, and achieve fast recovery time and high reliability. Effect

Active Publication Date: 2013-01-30
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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  • Application Information

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Problems solved by technology

However, at present, there is still a lack of qualitative and quantitative evaluation models for the control characteristics, unit capacity, ramp time and other parameters of different types of units in the self-healing process of the power grid, and the influence of their positions in the network on the generation of system self-healing schemes. with method

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  • Method and system for rapid self-healing of power grid
  • Method and system for rapid self-healing of power grid
  • Method and system for rapid self-healing of power grid

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0025] Such as figure 1 As shown, it is a schematic flow chart of the method for fast self-healing of the power grid in an embodiment of the present invention, including the following steps:

[0026] S11. Obtain the operating data of all the units in the power grid, and establish a mathematical model of the units;

[0027] In this step, since there are many types of units connected to the power grid, including hydroelectric units, ordinary thermal power units, pumped storage units, units with FCB capabilities, black start units, etc. A unified steady-state mathematical model of the self-healing phase, such as figure 2 As shown, is the schematic diagram of the mathematical model. The parameters of the mathematical model are: C is the capacity of the unit, a% is the percent...

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Abstract

The invention discloses a method for rapid self-healing of a power grid. The method comprises the following steps of: obtaining operation data of all machine units in the power grid, and establishing mathematic models of all the machine units; determining a starting sequence of non-started machine units and searching for power supply routes from started machine units to the non-started machine units according to the mathematic models; calculating capacities and schedulable loads of the started machine units by using an optimal trend algorithm; and starting the non-started machine units in sequence according to the starting sequence, the power supply routes, and the capacities and the schedulable loads of a generator unit. Correspondingly, the invention further provides a system for the rapid self-healing of the power grid. According to the method and the system, the rapid self-healing of the power grid is realized by considering a plurality of machine units with black-start functions, and the steady trend constraint and the machine unit operation constraint are met.

Description

technical field [0001] The invention relates to the technical field of power grid fault self-healing in power systems, in particular to a method for fast self-healing of a power grid and a system for fast self-healing of a power grid. Background technique [0002] The continuous expansion of the scale of the modern interconnected grid greatly improves the performance of the power system and meets the rapid development of the national economy. At the same time, due to the expansion of power supply scale, the loss caused by grid failure will be even greater. The power system is recognized as the most complex man-made system. As a network structure, local faults may induce chain reactions, leading to large-scale blackouts and even the collapse of the entire power grid. How to prevent large-scale power outages, realize the pre-control of potential system risks, and quickly recover after failures are major issues facing the operation and planning of modern power systems. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14
CPCY02B70/3225Y04S20/222
Inventor 卢恩李剑辉侯云鹤张文峰马煜华覃智君李嘉龙王宁龙霏
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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