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Comprehensive evaluation method of power grid based on asset life cycle

A full-life cycle and comprehensive evaluation technology, applied in the field of comprehensive evaluation of power grids based on the full life cycle of assets, can solve problems such as the inability to realize the economy and reliability of the scheme, the lack of consideration of sufficient operation and maintenance costs, and the heavy weight of initial investment costs. Achieve the effect of coordinating economy and reliability, promoting long-term cost, and clear meaning of intermediate results

Inactive Publication Date: 2016-03-23
CHINA SOUTHERN POWER GRID COMPANY +1
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Problems solved by technology

There are three main problems in the traditional evaluation of planning schemes: (1) The traditional method does not quantify the reliability index, and cannot achieve the coordination of scheme economy and reliability; (2) The initial investment cost weight of the traditional scheme is relatively large, less Considering the cost of operation and maintenance is sufficient; (3) The traditional method does not consider the failure of multiple components, and ignores the probability of its occurrence

Method used

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  • Comprehensive evaluation method of power grid based on asset life cycle
  • Comprehensive evaluation method of power grid based on asset life cycle
  • Comprehensive evaluation method of power grid based on asset life cycle

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Embodiment 1

[0036] The life cycle cost (LifeCycleCost, LCC) economic evaluation method is based on the traditional economic evaluation of planning, including the full life cycle cost of system equipment, system cost and environmental cost. Analyzing the full life cycle cost of system equipment is conducive to the minimum cost management of systems and equipment. In this embodiment, based on the extraction of value changes in the life cycle of equipment assets, a comprehensive evaluation method for power grids in the entire life cycle of assets is proposed. Refer to attached image 3 As shown, the implementation process of this method includes:

[0037] S01. Determine the investment cost CI of the transmission network planning. This comprehensive evaluation method divides the investment cost items into two categories: substations and transmission lines. The classification is as follows:

[0038] S01.1. Substation type investment cost CI is composed of power distribution device modules, c...

Embodiment 2

[0114] In order to verify the correctness and feasibility of the economic evaluation method for the life cycle cost (LCC) of the transmission network proposed by the present invention, the modified IEEE25Bus test system is taken as an example to conduct calculations. In this embodiment, the test system is divided into 4 areas with the bus as the unit, and area 1 is selected as the research area, and other areas are used as the monitoring area. Therefore, the research area includes busbar 10, busbar 20, busbar 40, busbar 50 and the transmission lines connected to the busbars. The grid structure of the test system is as follows: Figure 4 shown.

[0115] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here can be used to explain the present invention, but not to limit the present invention.

[0116] The present invention proposes a pow...

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Abstract

The invention discloses a comprehensive evaluation method of a power grid based on asset life cycle. The method comprises the following steps: calculating a Cost of Investment CI in a transmission network planning; calculating a Cost of Operation CO and a Cost of Maintenance CM in the transmission network planning; calculating a Cost of Failure CF in the transmission network planning; calculating a Cost of Decommissioning CD in the transmission network planning; and summarizing a Life Cycle Cost LCC in the transmission network planning. The invention introduces a theory of asset life cycle cost into a power network planning technology, which not just focuses on the initial investment of a planning scheme, but fully considers the costs of the planning scheme in the whole life cycle of planning, construction, operation, maintenance and decommissioning, and accurately reflects the cost expenditure of the planning scheme in each cycle; meanwhile, the comprehensive evaluation method of the power grid based on asset life cycle provided by the invention innovatively considers the influence of power grid reliability on the power grid planning cost, through the establishment of a conversion model of a reliability index and an economic index, the reliability of the power grid is quantified as an economic cost, so that the coordination of economy and reliability of the planning scheme can be realized.

Description

technical field [0001] The invention relates to the field of power system transmission network planning, in particular to a method for comprehensive evaluation of power grids based on the entire life cycle of assets. Background technique [0002] The evaluation of power grid planning schemes is mainly aimed at the multiple sets of power grid planning schemes that experts have formed. By comparing the goals and technical, economic, environmental, social and other indicators determined during project decision-making, the optimal planning scheme is found out through various trade-offs. Traditional The evaluation of the power grid planning scheme is firstly based on technical considerations, and the technical indicators such as grid reliability are taken as the inspection conditions that must be met. On this basis, the one with the least investment cost is selected as the optimal scheme. The specific evaluation process is as follows: figure 1 shown. There are three main problem...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0637G06Q50/06Y04S10/50
Inventor 彭波陈旭刘利平曹发文廖志伟顾熹刘晟
Owner CHINA SOUTHERN POWER GRID COMPANY
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