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A method and device for verifying power transmission and distribution prices based on the maximum power supply capacity of the power grid

A technology of maximum power supply capacity, power transmission and distribution, applied in the field of electric power, can solve problems such as low market efficiency and inability to rationally and effectively allocate resource production and consumption, and achieve the effect of reducing the number of iterations without affecting accuracy

Active Publication Date: 2020-11-20
南方电网能源发展研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comprehensive cost method can better compensate for costs, meet financial indicators, and help avoid electricity price fluctuations brought about by peak investment periods. However, the comprehensive cost method cannot provide correct economic signals for production and consumption at the current stage, so it cannot allocate resources reasonably and effectively. and guide production and consumption, the market efficiency is not high; the marginal cost method can provide effective economic information, can correctly reflect the future value of electric energy, and give users correct power consumption signals, and it has been widely used in foreign power transmission and distribution pricing. However, due to the different power grids and load characteristics in different regions, there are great differences in the specific implementation methods

Method used

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  • A method and device for verifying power transmission and distribution prices based on the maximum power supply capacity of the power grid
  • A method and device for verifying power transmission and distribution prices based on the maximum power supply capacity of the power grid
  • A method and device for verifying power transmission and distribution prices based on the maximum power supply capacity of the power grid

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Embodiment

[0065] In this embodiment, a power transmission and distribution price verification method based on the maximum power supply capacity of the power grid includes the following steps:

[0066] 1) Obtain grid line parameters and load data, including grid line impedance, line rated capacity, transformer impedance, equivalent circuit parameters, capacity, load data of each node, etc. Wherein, the grid parameters and load data can be obtained through BPA data.

[0067] The power grid topology of this embodiment is as follows image 3 As shown, the grid parameters and load data are shown in the table below (reference value: S B =100MVA,V B =110kV):

[0068] Table 1 Three-node instance data

[0069] line number Reactance (p.u.) Rated capacity (MW) node number Load (MW) Power generation (MW) L1 0.3 45 node1 - balance node L2 0.3 45 node2 18 0 L3 0.3 45 node3 25 0

[0070] Establish the maximum power supply capacity optimizatio...

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Abstract

The invention discloses a power transmission and distribution price verification method and device based on the maximum power supply capacity of a power grid. The method comprises the following stepsof: S1, acquiring power distribution network parameters, establishing a power grid maximum power supply capacity model according to the acquired parameters, and determining the influence of a node load on the power grid maximum power supply capacity by utilizing the power grid maximum power supply capacity model, S2, acquiring the investment cost of the single power capacity according to the totalconstruction investment cost of the power grid and the maximum power supply capacity of the power grid obtained in the step S1, and S3, calculating the marginal cost of each node according to the influence of the node load obtained in the step S1 on the maximum power supply capacity of the power grid and the investment cost of the single power capacity of the power grid obtained in the step S2.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method and device for verifying power transmission and distribution prices based on the maximum power supply capacity of a grid. Background technique [0002] Transmission costs account for a considerable proportion of end-user electricity costs, and their reasonable allocation and recovery are of great significance to stimulate the rational planning / positioning of power grids, power sources, and loads, as well as the safe and economical operation of the entire power system. [0003] The natural monopoly attribute of power transmission and distribution services, the untraceability of power grid power flow, and the nonlinearity of power flow equations have caused difficulties in the allocation of power transmission and distribution costs. At present, in practical application and theoretical research, there are many methods for verifying power transmission and distributio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/008
Inventor 冷媛辜炜德金东亚陈政芦勇王左权蔡学文张翔黄国日
Owner 南方电网能源发展研究院有限责任公司
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