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Regional distributed photovoltaic power generation system modeling method based on IEC61850 standard

A distributed photovoltaic and power generation system technology, applied in the field of solar energy applications, to achieve the effect of comprehensive monitoring and management

Inactive Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dispatchers cannot understand the internal primary wiring structure of the distributed photovoltaic power station and the power generation of a single inverter
Changes in the structure of photovoltaic power plants and power generation cannot be managed

Method used

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  • Regional distributed photovoltaic power generation system modeling method based on IEC61850 standard
  • Regional distributed photovoltaic power generation system modeling method based on IEC61850 standard
  • Regional distributed photovoltaic power generation system modeling method based on IEC61850 standard

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] The grid-connected access control system of distributed photovoltaic power plants includes master stations, regional control devices, and on-site photovoltaic power generation devices. The on-site photovoltaic power generation device consists of photovoltaic modules, combiner boxes, inverters, and grid-connected interface devices, such as figure 1 shown.

[0021] The photovoltaic power station model includes a three-layer structure of equipment model, line model and power station model, such as figure 2 shown. The equipment model includes modeling information of equipment such as photovoltaic modules, combiner boxes, and inverters. The line model includes on-site equipment model and line capacity, voltage level grid-connected state information, and the line model information is maintained by the grid-connected interface device. The photovoltaic power plant...

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Abstract

The invention relates to a regional distributed photovoltaic power generation system modeling method based on the IEC61850 standard. Three layers of structures are adopted for the method to achieve modeling management of a distributed photovoltaic power generation system, and the method involves a master station, a regional control device and an on-site photovoltaic power generation device. The master station performs monitoring management on the on-site photovoltaic power generation device through the regional control device, and the photovoltaic power generation device comprises a photovoltaic module, a combiner box, an inverter and a grid connection interface. The master station and the regional control device exchange information by transmitting graph model files and real-time data. A photovoltaic power generation system model of the method includes the three layers of structures including a device model, a circuit model and a power station model. The power station model covers all circuit models in a power station, and the circuit model comprises various photovoltaic power generation device models. The method is favorable for dispatching and management of a distributed photovoltaic receiving power grid, and controllable photovoltaic power generation can be achieved.

Description

[0001] technical field [0002] The invention relates to a modeling method of a regional distributed photovoltaic power generation system based on the IEC61850 standard, belonging to the technical field of solar energy applications. Background technique [0003] The technology of distributed photovoltaic grid-connected power generation has matured. With the release of relevant auxiliary policies, distributed photovoltaic grid-connected will increase dramatically. In order to avoid the impact of distributed photovoltaic power generation on the distribution network and give full play to the supporting role of distributed photovoltaic power generation on the power grid, distributed photovoltaic power generation must be dispatched and managed by the power grid to achieve controllable power generation. At present, there are many manufacturers of photovoltaic grid-connected inverters, with different interfaces for information transmission and remote dispatching, including Modb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 徐在德范瑞祥辛建波夏永洪陈娜金雪
Owner STATE GRID CORP OF CHINA
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