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Generation method for future-state alternating-current flow of power grid

A technology of AC power flow and future state, which is applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems such as the difficulty in accurately generating future state AC power flow sections, and achieve fast calculation speed, good convergence, and high accuracy Effect

Active Publication Date: 2014-03-12
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The purpose of this invention is to solve the problem that the future state AC power flow section is difficult to be accurately generated, and propose a method for generating the future state AC power flow of the power grid

Method used

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  • Generation method for future-state alternating-current flow of power grid

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Embodiment Construction

[0022] The method for generating the AC power flow in the future state of the power grid proposed by the present invention is described in detail in conjunction with the accompanying drawings and embodiments as follows:

[0023] The method for generating the AC power flow in the future state of the power grid proposed by the present invention is as follows: figure 1 shown, including the following steps:

[0024] 1) Select a real-time operating section of the power grid as the initial section, and adjust the grid operation mode and power generation load output to make the initial section meet the requirements of the typical operating section of the power grid. Save the cross-section data as the basic cross-section of the future state communication flow.

[0025] 2) Obtain the grid power generation plan data, and obtain the active output of each generator set according to the set future state power flow time. In the basic section, set the active output of each generator to be ...

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Abstract

The invention relates to a generation method for the future-state alternating-current flow of a power grid. The method comprises the following steps: (1) selecting a real-time running section of the power grid as an initial section; (2) obtaining generation plan data of the power grid; (3) obtaining overhaul plan data of the power grid; (4) obtaining predicted data of a busbar load; (5) obtaining connecting line plan data; (6) driving one-time flow calculation of the power grid; (7) calculating a power deviation value of a connecting line; (8) correcting load injection; (9) driving one-time flow calculation of the power grid; (10) setting each generator participating in adjusting the state as an initial set value which is obtained from rated parameters of the generator; and (11) storing the section of the power grid after the adjustment is finished, and successfully generating the future-state flow. According to the method disclosed by the invention, the future predication and plan data of a generation plan, an overhaul plan, a connecting line trade plan, busbar load predication data and the like are adequately considered, the adjustment is automatically finished, and the future-state alternating-current flow is generated on the basis of the real running section of the power grid; an accurate future-state predicated flow result is provided, thus providing complete basic flow data for plan security check.

Description

technical field [0001] The invention belongs to the technical field of electric power system scheduling automatic control, and in particular relates to a method for generating an AC power flow in the future state of a power grid. Background technique [0002] In order to ensure the safe and economical operation of the power grid, it is necessary to formulate the power generation plan, maintenance plan, and tie-line transaction plan of the power grid according to the predicted power grid load, and conduct a power grid security assessment for the formulated plan. Traditional planning systems usually use DC power flow to assess the safety of future grid power flow. Since the DC power flow does not consider the influence of reactive power and voltage, the calculation results have large errors, which affects the accuracy of power grid forecasting power flow. There are also large errors in the automatic fault scanning based on the DC power flow, which may cause serious hidden dang...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06Q50/06
CPCY04S10/50
Inventor 黄翠艳范辉段晓波胡文平郝晓光王钊李宣义
Owner STATE GRID CORP OF CHINA
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