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Electromechanical transient modeling method based on VSC (Voltage Source Converter) grid-connection photovoltaic power station and energy-storage power station

An energy storage power station, transient model technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of increased workload, poor scalability and compatibility, etc.

Active Publication Date: 2012-03-21
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The independent modeling and realization of each power generation equipment requires reprocessing of the VSC device, which increases the workload
[0012] (2) The modeling of existing photovoltaic power plants and energy storage power plants is relatively independent, with poor scalability and compatibility

Method used

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  • Electromechanical transient modeling method based on VSC (Voltage Source Converter) grid-connection photovoltaic power station and energy-storage power station
  • Electromechanical transient modeling method based on VSC (Voltage Source Converter) grid-connection photovoltaic power station and energy-storage power station
  • Electromechanical transient modeling method based on VSC (Voltage Source Converter) grid-connection photovoltaic power station and energy-storage power station

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Embodiment Construction

[0066] The modeling method of the present invention is applied to a typical wind-solar-storage power station. Photovoltaic power stations and energy storage power stations are part of the wind power storage power station. The capacity of a single unit is 1MW / unit for photovoltaics and 1MW / unit for energy storage. Figure 7 The schematic diagram of the wind-solar-storage power station is shown, and Table 1 shows the main parameters of the photovoltaic power station and the energy-storage power station.

[0067] Table 1 Main parameters of photovoltaic power station and energy storage power station

[0068]

[0069] Fault setting: A three-phase metal short-circuit fault occurs on the transformer side of the receiving end within 1s of the I-loop line from the sending end to the receiving end, jumping off the faulty side of the line in 1.08s, and jumping off the non-faulty side of the line in 1.1s. Simulation results such as Figure 8 (a)-(c) shown.

[0070] Depend on Figu...

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Abstract

The invention belongs to power systems, and relates to an electromechanical transient modeling method based on a VSC (Voltage Source Converter) grid-connection photovoltaic power station and a battery energy-storage power station. For the development form of increasing new-energy generating equipment based on the VSC grid-connection, based on the consideration to computation characteristics of electromechanical transient simulation of large power systems, a method for modeling by combination of various devices is used, and a high-expandability and strong-practicability modeling method of the new-energy generating equipment based on the VSC grid-connection is realized by combining with the own operating characteristics of the VSC, thus, the aim of quick and accurate modeling in simulation calculation of the large power systems can be realized.

Description

technical field [0001] The invention belongs to an electric power system, and in particular relates to an electromechanical transient modeling method based on a VSC grid-connected photovoltaic and energy storage power station. Background technique [0002] With the development of the country's new energy strategy, the development of new energy sources such as photovoltaics and energy storage has been highly valued and strongly supported. The proportion of photovoltaic power stations and energy storage power stations in the power grid is getting higher and higher, and their influence is getting bigger and bigger. . Therefore, there is an urgent need to develop electromechanical transient models of photovoltaic power stations and energy storage power stations suitable for large-scale vigorous system simulation, as the basis for new power grid planning and operation analysis, so as to carry out large-capacity photovoltaic power stations and energy storage power stations. Resea...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY04S40/22Y02E60/76Y02E60/00
Inventor 王皓怀侯俊贤李群炬仲悟之吴涛王毅赵炜炜董毅峰梁玉枝
Owner CHINA ELECTRIC POWER RES INST
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