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A power demand side project economic analysis method and system

A technology for power demand side and project economy, applied in data processing applications, instruments, calculations, etc., can solve problems such as low accuracy, lack of investment guidance, etc., and achieve the effect of improving accuracy

Pending Publication Date: 2019-06-28
CHINA ELECTRIC POWER RES INST +7
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, for the common power demand-side rectification projects in enterprises, such as replacement of low-loss wires, replacement of high-efficiency transformers, switching of reactive power compensation devices, etc., most of them use the post-implementation measurement method to estimate the energy-saving effect, and the early investment evaluation mostly relies on experience. and low accuracy
Therefore, there is a lack of an economic analysis method that can reasonably estimate the energy saving and has a guiding effect on investment, and it is urgent to extensively carry out the research and development of new technologies and new products related to energy saving in distribution networks.

Method used

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  • A power demand side project economic analysis method and system
  • A power demand side project economic analysis method and system
  • A power demand side project economic analysis method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] like figure 1 A method for economic analysis of power demand side projects is shown, including:

[0064] S1 selects the candidate equipment according to the obtained renovation content and operating constraints, and formulates a renovation plan by enumerating the candidate equipment;

[0065] S2 respectively replace the original equipment parameters with the equipment nameplate parameters of each renovation scheme, and use the forward push back generation power flow calculation method to determine the energy saving of each renovation scheme in the same time dimension;

[0066] S3 constructs energy saving energy investment cost function relational expression according to the energy saving energy of all renovation schemes and the pre-calculated investment cost, and determines the optimal renovation scheme according to the energy saving investment cost function relational expression.

[0067] S1 selects the candidate equipment according to the obtained renovation content ...

Embodiment 2

[0132] Embodiment 2: Based on the same inventive concept, the present invention also provides an economic analysis system for power demand side projects, including:

[0133] A formulating module, configured to select alternative equipment according to the acquired renovation content and operating constraints, and formulate a renovation plan by enumerating the candidate equipment;

[0134] The calculation module is used to replace the original equipment parameters with the equipment nameplate parameters of each renovation scheme, and determine the energy saving of each renovation scheme in the same time dimension by using the calculation method of forward push back generation;

[0135] A determination module is configured to construct a functional relational expression of energy-saving investment cost function according to the energy-saving energy of all transformation schemes and the pre-calculated investment cost, and determine the optimal transformation scheme according to th...

Embodiment 3

[0154] The basic process of the economic analysis method of a power demand side project based on accurate energy-saving calculation of the present invention may include: first, use GIS system, SCADA system, etc. to collect data such as topology structure, component parameters, and power consumption, and determine the need for The location of the transformation; secondly, according to the constraints of the operating conditions, select the alternatives for each transformation content, and enumerate all the transformation schemes that meet the conditions; then, calculate the total investment cost of each transformation scheme according to the investment cost calculation model of different transformation contents ; Then, substitute the modified parameters into the power flow calculation and calculate the energy saving of each renovation scheme; finally, fit the cost and energy saving of each scheme to obtain the "investment cost of energy conservation" of the renovation project Fu...

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Abstract

The invention relates to a power demand side project economic analysis method, which comprises the following steps of: selecting alternative equipment according to acquired transformation contents andoperation constraint conditions, and enumerating the alternative equipment to formulate transformation schemes; replacing the original equipment parameters with the equipment nameplate parameters ofthe transformation schemes, and determining the energy saving amount of the transformation schemes in the same time dimension by using a forward-backward sweep power flow calculation method; and constructing an energy-saving amount investment cost function relational expression according to the energy-saving amounts of all the transformation schemes and the pre-calculated investment cost, and determining an optimal transformation scheme according to the energy-saving amount investment cost function relational expression. According to the technical scheme provided by the invention, the calculation accuracy of the energy-saving amount is improved, and a scientific basis is provided for making an early-stage plan of energy-saving technical improvement.

Description

technical field [0001] The invention relates to the field of power system operation and control, in particular to an economic analysis method and system for power demand side projects. Background technique [0002] At present, power grid enterprises have achieved remarkable results in energy-saving work in power distribution networks, and the energy efficiency of power transmission and distribution has been steadily improved, which not only indirectly promotes the reduction of electricity production and emissions, but also contributes huge economic benefits to the country. However, at present, for the common power demand-side rectification projects in enterprises, such as replacing low-loss wires, replacing high-efficiency transformers, switching reactive power compensation devices, etc., most of them use post-implementation measurement methods to estimate energy-saving effects, and early investment evaluations mostly rely on experience. And the accuracy is low. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 张新鹤屈博郭炳庆黄伟刘强万伟江丁霄寅周珏马磊李星周伏秋王娟邓良辰楼振义孙若男苏娟
Owner CHINA ELECTRIC POWER RES INST
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