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Active scheduled power flow adjusting method and device based on grid model expansion

A technology of flow and planning, applied in the field of electric power, can solve problems such as unproposed solutions, large deviation of power distribution coefficient of tie lines, and large limitations of sensitivity analysis

Active Publication Date: 2017-05-31
TAIAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the power flow calculation, the tie-line plan has a greater impact on the grid power flow; however, in the existing technology, the traditional method of splitting the tie-line plan into related physical lines based on historical experience is less accurate; specifically, the conventional The sensitivity analysis of the method has relatively large limitations, and the daily exchange plan and the distribution coefficient of tie line power formed by similar historical logs have large deviations, which leads to the fact that the power flow accuracy calculated based on it cannot meet the actual requirements of the project
[0004] Aiming at the low accuracy of the above-mentioned planned power flow calculation, no effective solution has been proposed so far

Method used

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  • Active scheduled power flow adjusting method and device based on grid model expansion
  • Active scheduled power flow adjusting method and device based on grid model expansion
  • Active scheduled power flow adjusting method and device based on grid model expansion

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Embodiment 1

[0030] see figure 1 Shown is a flow chart of a method for adjusting active power planning based on power grid model expansion, the method includes the following steps:

[0031] Step S102, obtaining local dispatch plan data in the current dispatch area; wherein, the local dispatch plan data includes power network topology model data and maintenance plan data; the power network topology model data includes power network topology relationship and component parameters;

[0032] Specifically, the local dispatch plan data in the above-mentioned current dispatch area can be obtained from the energy management system in the relevant power management department.

[0033] Step S104, calculating the sensitivity of the line nodes of the power network in the current dispatching area according to the power network topology model data and the system frequency response characteristics of the power network topology model;

[0034] In the power system, when balancing machines at different posi...

Embodiment 2

[0072] Corresponding to the above method embodiment, see image 3 The structure diagram of an active power planning power flow adjustment device based on the expansion of the power grid model is shown. The device includes the following parts:

[0073] The first acquisition module 302 is used to acquire local dispatch plan data in the current dispatch area; wherein, the local dispatch plan data includes power network topology model data and maintenance plan data; the power network topology model data includes power network topology relationship and component parameters ;

[0074] The sensitivity calculation module 304 is used to calculate the sensitivity of the line nodes of the power network in the current dispatching area according to the power network topology model data and the system frequency response characteristics of the power network topology model;

[0075] The second acquisition module 306 is used to acquire the power network topology model data and unit planning d...

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Abstract

The invention provides an active scheduled power flow adjusting method and device based on grid model expansion. The method comprises the following steps: calculating sensitivity of line nodes of a power grid in the current scheduling area according to data and system frequency response characteristics of a power grid topology model; performing equivalent calculation on tie lines between the current scheduling area and a high-level scheduling area according to the sensitivity, local scheduling planning data of the current scheduling area as well as power grid topology model data and unit planning data of the high-level scheduling area, and setting boundary parameters of the power grid topology model in the current scheduling area; adjusting active scheduled power flow of the current scheduling area according to the local scheduling planning data, the power grid topology model data and the unit planning data of the high-level scheduling area, the sensitivity and the power grid topology model subjected to boundary parameter setting in the current scheduling area. The accuracy of scheduled power flow calculation is improved with the method.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and device for adjusting active power planned power flow based on grid model expansion. Background technique [0002] The planned power flow calculation in the power network refers to the calculation of the distribution of active power, reactive power and voltage in the power network under the given power system network topology, component parameters, and power generation and load parameters. Calculating the planned power flow of the power grid, and adjusting the off-limit transmission lines and sections according to the power flow results, is one of the key points for safely constraining economic dispatch. [0003] In the power flow calculation, the tie-line plan has a greater impact on the grid power flow; however, in the existing technology, the traditional method of splitting the tie-line plan into related physical lines based on historical experience is less...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06313G06Q50/06Y04S10/50
Inventor 吴斌乔东伟柴颖曹兴华丁山陈喆
Owner TAIAN POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO
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