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Power grid fast recovery method considering generator set recovery time model

A generator set and recovery time technology, applied in the direction of circuit devices, AC network circuits, single-network parallel feeding arrangement, etc., can solve problems affecting power grid efficiency, power grid recovery failure, unreasonable results, etc., to reduce secondary accidents Risk, decision-making analysis, fast and reasonable effect of the plan

Inactive Publication Date: 2017-09-26
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

Due to the complexity of the types of units in the system and the improvement of functions, the single use of a unified generator model will inevitably lead to unreasonable results, affect the efficiency of the power grid recovery process, and even cause the failure of the power grid recovery, resulting in a secondary impact

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  • Power grid fast recovery method considering generator set recovery time model
  • Power grid fast recovery method considering generator set recovery time model
  • Power grid fast recovery method considering generator set recovery time model

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Embodiment Construction

[0063] The present invention will be described in further detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0064] A method for quick recovery of the power grid considering the generator set recovery time model, is characterized in that it comprises the following steps:

[0065] Step 1: Establish a detailed generator time model that takes into account the status of the unit and determine it as a black start generator unit;

[0066] Step 2: Establish the start-up time model of the branch. Under the premise of considering the start-up time of the branch, add the charging power of the branch and the capacity of the high-voltage reactor to represent the influence of reactive power on the charging of the high-voltage line;

[0067] Step 3: Search out the optimal starting path of all generators through the improved Dijkstra a...

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Abstract

A power grid fast recovery method considering a generator set recovery time model comprises the following steps: classifying the generators in a power grid in detail according to the start-up characteristic, and building corresponding startup time models; building a branch startup time model under the premise of considering the branch startup time; searching for the optimal startup paths of all the generators through an improved Dijkstra algorithm, sorting the generators, and determining a target generator; setting an objective function; solving the objective function through a primal-dual interior point optimal power flow algorithm; checking the transient states of the startup paths of the generators; after a generator set is started, deleting the generator set from unstarted generator sets, revising the weight value of a charged transmission line to 1 / 5 of the original value, and increasing the number of virtual branches between started generators; and finally, selecting a final startup scheme according to different optimization objectives. The problem that an unreasonable scheme is made due to an inaccurate generator time model after large-scale blackout of the system is solved.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, and in particular relates to a fast recovery method for a power grid considering a recovery time model of a generating set. Background technique [0002] Large-scale power grid interconnection is an inevitable trend in the development of power systems worldwide. my country's power system is developing rapidly, power loads are increasing sharply, ultra-high voltage and ultra-high voltage AC and DC transmission lines are completed and put into operation, and the dynamic characteristics of power grids are becoming more and more serious. complex. It is precisely because of the network characteristics of the power system and the public nature of electric power that the power grid accidents spread quickly, have a wide range of influence, and have serious consequences. Once a large-scale blackout accident occurs, the production and construction of the national economy and the ...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/001H02J3/38H02J2203/20
Inventor 罗钢徐伟刘崇茹杨银国钱峰谭伟段秦刚易杨胡海洋
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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