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Automatic voltage control device and control method for distributed photovoltaic power station

A distributed photovoltaic and control device technology, applied in circuit devices, photovoltaic power generation, electrical components, etc., can solve the problems of high labor cost, long adjustment response time, and low control accuracy.

Inactive Publication Date: 2014-07-16
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many disadvantages of manual control, such as long adjustment response time, unreasonable distribution, high error rate, high labor cost, etc.; through automatic adjustment of SVC / SVG equipment, the control accuracy is low, the power consumption cost is high, and the inverter cannot be fully utilized. At the same time, it also poses a major threat to the safe and reliable operation of the power grid

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  • Automatic voltage control device and control method for distributed photovoltaic power station
  • Automatic voltage control device and control method for distributed photovoltaic power station

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Embodiment Construction

[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0049] as attached figure 1 Shown is a schematic structural diagram of a distributed photovoltaic power station voltage control device disclosed in this application. The control device 1 includes a communication management module 3 , a command processing module 4 , an AVC control module 5 , a data management module 2 , and an information display module 6 . The data management module 2 is connected to the communication management module 3; the data management module 2 is also connected to the information display module 6, the AVC control module 5, and the command processing module 4; the AVC control module 5 is connected to the command processing module 4 .

[0050] The communication management module 3 is responsible for sending and receiving real-time information with the integrated control system 7 in the station, the power grid dispatching center 9, the p...

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Abstract

The invention provides an automatic voltage control device and a control method for a distributed photovoltaic power station. The control device comprises a communication management module, a command processing module, an AVC module, a data management module and an information displaying module. The communication management module is in charge of receiving and transmitting real-time information with a connected device. The command processing module is in charge of converting formats of remote regulation and remote control orders received and transmitted by the communication management module. The AVC module is used for carrying out reactive power control on photovoltaic inverters of the whole station and an SVC / SVG system through the preference control strategy of the inverters according to the real-time information received at present and can control tap positions of a transformer substation, and therefore the busbar voltage of the current power station meets the requirement of power grid dispatching.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power station control, and in particular relates to an automatic voltage control system for a distributed photovoltaic power station. Background technique [0002] Photovoltaic power plant voltage control is still in its infancy. Voltage control is very mature in traditional power generation industries such as thermal power and hydropower, but it still faces many problems in the emerging photovoltaic industry. Due to the instability and periodicity of solar energy resources, the limitation of power factor, and the scattered geographical distribution of distributed photovoltaics, the voltage control of distributed photovoltaic power plants is much more complicated and difficult than other power generation industries. At present, the voltage control of many photovoltaic power plants in China is carried out through manual switching of capacitors and inductors, or through automatic adjustment of...

Claims

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Application Information

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IPC IPC(8): H02J13/00H02J3/18
CPCY02E10/56Y02E40/10Y02E40/70Y02E60/00Y04S10/16Y04S10/22
Inventor 徐洋王亮缪继东韩敬涛赵凯王申强王华刘春雷
Owner STATE GRID CORP OF CHINA
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