Cold and hot pipe network virtual energy storage power distribution network power supply capability analysis method and device

A technology of virtual energy storage and power supply capacity, applied in the fields of electrical digital data processing, instruments, design optimization/simulation, etc., to achieve the effect of improving economy and exerting resource utilization efficiency

Active Publication Date: 2021-01-29
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for the commonly used calculation method of distribution system power supply capacity considering the N-1 safety criterion, a rigid constraint is adopted, and there are certain problems in actual planning

Method used

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  • Cold and hot pipe network virtual energy storage power distribution network power supply capability analysis method and device
  • Cold and hot pipe network virtual energy storage power distribution network power supply capability analysis method and device
  • Cold and hot pipe network virtual energy storage power distribution network power supply capability analysis method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1 of the present invention provides a distribution network power supply capability analysis method for virtual energy storage of cold and heat pipe networks, including:

[0066] Construct the cooling and heating load user comfort model and the virtual energy storage model of the cooling and heating pipe network, and obtain the thermal average scale prediction index and the time-lag heat of the heat pipe network;

[0067] Obtain the electric energy required for the time-delayed heat of the heat pipe network based on the time-delayed heat of the heat pipe network;

[0068] determining whether the thermal average scale predictor is within a threshold;

[0069] If yes, then obtain the main transformer load rate and feeder load rate, construct the power supply capacity objective function, and construct constraint conditions based on the electric energy required by the time-delayed heat of the heat pipe network, the main transformer load rate and the feeder load ra...

Embodiment 2

[0112] Embodiment 2 of the present invention provides a distribution network power supply capability analysis device for virtual energy storage of cold and heat pipe networks, including:

[0113] The first model building block: used to construct the cooling and heating load user comfort model and the virtual energy storage model of the cooling and heating pipe network, and obtain the thermal average scale prediction index and the time-delayed heat of the heat pipe network;

[0114] Electric energy acquisition module: used to obtain the electric energy required for the time-lag heat of the heat pipe network based on the time-lag heat of the heat pipe network;

[0115] Power supply capability acquisition module: used to determine whether the thermal average scale prediction index is within the threshold;

[0116] If yes, then obtain the main transformer load rate and feeder load rate, construct the power supply capacity objective function, and construct constraint conditions bas...

Embodiment 3

[0118] Embodiment three of the present invention has carried out numerical example analysis to example:

[0119] Specifically as shown in Table 1 and Table 2:

[0120] Table 1. Substation configuration table in the example

[0121]

[0122] Based on the above description, the overall situation of the calculation example includes three substations, six main transformers, 28 feeders, 352 load nodes (11 industrial load nodes, 62 commercial load nodes, 279 residential load nodes), 436 315kV load nodes distribution transformers.

[0123] The results of calculating the maximum power supply capacity of the system under different constraint scenarios are shown in Table 2.

[0124] Table 2 Comparison and Analysis of System Power Supply Capability under Different Constraint Condition Scenarios

[0125]

[0126]

[0127] According to the above results, it can be analyzed that within a certain reliability range, the maximum power supply capacity of the system remains unchanged; ...

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Abstract

The invention provides a cold and hot pipe network virtual energy storage power distribution network power supply capability analysis method and device, and relates to the technical field of power grid evaluation, and the method specifically comprises the steps: constructing a cold and hot load user comfort model and a cold and hot pipe network virtual energy storage model, and obtaining a thermalinductance average scale prediction index and heat pipe network time-lag heat; acquiring electric energy required by the heat pipe network time-lag heat based on the heat pipe network time-lag heat;determining whether the thermal inductance average scale prediction index is within a threshold value or not; and if so, obtaining a main transformer load rate and a feeder line load rate, constructing a power supply capability target function, constructing constraint conditions based on the electric energy required by the time-lag heat of the heat pipe network, the main transformer load rate andthe feeder line load rate, and obtaining the maximum value of the power supply capability target function. Through the method and the device provided by the invention, the power supply capability of the urban power distribution network can be further improved and mined, the resource utilization efficiency of the power distribution network is greatly exerted, and the economy of power grid construction and operation is improved.

Description

technical field [0001] The invention relates to the technical field of grid power supply capacity evaluation, in particular to a distribution network power supply capacity analysis method and device for cold and hot pipe network virtual energy storage. Background technique [0002] In recent years, with the continuous introduction of relevant policies such as coal-to-electricity and terminal electrification, the role of electricity in the supply of cooling and heating loads has become more prominent. The supply of load should also consider the demand for cooling and heating loads brought about by relevant policies such as coal-to-electricity and terminal electrification, which poses new demands and challenges for the analysis and evaluation of the power supply capacity of urban distribution networks. Under the background of continuous introduction of relevant policies such as electricity reform and terminal electrification, research on key technologies such as analysis of po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F113/04G06F119/08
CPCG06F30/20G06F2113/04G06F2119/08
Inventor 张梁迟福建刘洪张雪菲何星瑭徐晶李娟张章李桂鑫王哲孙阔夏冬罗涛祁彦鹏杨帆赵长伟李广敏
Owner STATE GRID TIANJIN ELECTRIC POWER
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