Communication-based photovoltaic power station power saving control device and method

A photovoltaic power station, power-saving control technology, applied in circuit devices, measuring devices, electrical components, etc., can solve the problem of large standby loss, and achieve the effect of reducing production costs and reducing standby loss.

Pending Publication Date: 2020-01-10
HUANENG CLEAN ENERGY RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a communication-based photovoltaic power station power saving control device and method to solve the technical problem that when there is no energy output in the photovoltaic area at night, the electrical equipment in the photovoltaic area is connected to the power grid for 24 hours, and the standby loss is relatively large.

Method used

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  • Communication-based photovoltaic power station power saving control device and method
  • Communication-based photovoltaic power station power saving control device and method
  • Communication-based photovoltaic power station power saving control device and method

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Embodiment approach

[0038] see figure 2 As shown, the present invention is a photovoltaic power plant energy-saving control device based on communication, including main contactor KM1, soft-start resistor R1, soft-start contactor KM2, non-contact infrared thermometer, measuring device (CT, PT signal) and power saving controller.

[0039] The 35kV power grid is connected to the transformers of several power generation units through the circuit breaker SW1 and the main contactor KM1 connected in series; the soft start resistor R1 and the soft start contactor KM2 are connected in series to form a soft start branch, and the soft start branch is connected in parallel with the main contactor KM1.

[0040] The energy-saving controller is connected to the SCADA system to collect the GPS timing signal of the SCADA system and the operation signal of the equipment in the photovoltaic area.

[0041] The detection end of the measuring device is connected to the two ends of the main contactor KM1 for detecti...

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Abstract

The invention discloses a communication-based photovoltaic power station power saving control device and method. The device comprises a main contactor KM1, a soft start resistor R1 and a soft start contactor KM2. The power grid is connected with transformers of multiple power generation units through a circuit breaker SW1 and the main contactor KM1 which are connected in series in turn. The soft start resistor R1 and the soft start contactor KM2 are connected in series to form a soft start branch, and the soft start branch is connected in parallel with the main contactor KM1. The device also comprises a power saving controller. The power saving controller is connected with a SCADA system. The power saving control device is mainly applied to the large photovoltaic ground power station. After the photovoltaic inverter is disconnected at night, the high voltage path of the inner ring network bus cabinet of the station can be safely and reliably disconnected to reduce the standby loss in the photovoltaic production area at night, and the high voltage path can be timely connected before photovoltaic working the next day so as to achieve the purposes of saving energy, reducing consumption and reducing the production cost of the photovoltaic power station.

Description

technical field [0001] The invention belongs to the field of photovoltaic power station control, in particular to a communication-based photovoltaic power station power-saving control device and method. Background technique [0002] Photovoltaic power station refers to a photovoltaic power generation system that uses solar energy and uses special materials such as crystalline silicon panels, inverters and other electronic components to connect to the grid and transmit power to the grid. Photovoltaic power station is currently the most encouraged green power development energy project. [0003] Solar power generation is divided into photothermal power generation and photovoltaic power generation. The commercialization of solar power in the current period refers to solar photovoltaic power generation. [0004] At present, the photovoltaic power station has no energy output at night in the photovoltaic area. After the inverter of the photovoltaic sub-array is disconnected fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02J3/38G01D21/02
CPCG01D21/02Y02E40/70Y02P80/20Y04S10/123Y04S10/40Y04S10/50
Inventor 朱连峻刘大为刘明义朱耿锋孙超李萌
Owner HUANENG CLEAN ENERGY RES INST
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