光伏测试平台和光伏测试系统

Abstract

本实用新型提供了一种光伏测试平台和光伏测试系统。光伏测试平台包括：多个电流测试支路，电流测试支路的输入端用于与直流源连接，电流测试支路的输出端用于与光伏产品的一路MPPT的输入端连接；电流测试支路包括：第一输入接口，第一输入接口用于与直流源连接，接收直流源输出的总输入信号；输出接口，输出接口用于与光伏产品的一路MPPT的输入端连接；电流检测模块，电流检测模块用于对从第一输入接口输入的总输入信号进行采样并进行电流检测。本实用新型实施例的光伏测试平台通过设置多个电流测试支路，每个电流测试支路分别连接光伏产品的一路MPPT输入端，从而可以实现对每一路MPPT的独立测试。

Claims

1. A photovoltaic testing platform, characterized by, include: Multiple current test branches are provided, the input terminals of which are used to connect to a DC source, and the output terminals of which are used to connect to the input terminal of one MPPT of a photovoltaic product. The current test branch includes: a first input interface for connecting to a DC source and receiving the total input signal output by the DC source; an output interface for connecting to the input terminal of one MPPT of the photovoltaic product; and a current detection module for sampling the total input signal input from the first input interface and performing current detection.

2. The photovoltaic testing platform of claim 1, wherein, The current detection module includes a total current shunt and a total current detector connected to the total current shunt. The total current shunt is used to sample the total current signal in the total input signal and output the sampled total current signal to the total current detector for detection.

3. The photovoltaic testing platform according to claim 2, characterized in that, The current detection module includes multiple PV shunts and shunt current detectors connected to the PV shunts. Each PV shunt is connected in parallel and in series with the total current shunt. The PV shunts are used to sample the PV shunt current in the total input signal and output the sampled shunt current signal to the shunt current detector for detection.

4. The photovoltaic testing platform of claim 1, wherein, It also includes a voltage sampling module, which includes a voltage divider component, multiple second input interfaces and multiple first protection modules. Each second input interface is connected to a first input interface and a first protection module respectively. Each first protection module is also connected to a first relay. The first protection module is connected to the voltage divider component through the first relay. The second input interface receives the total input signal output by the DC source and inputs the total input signal to the voltage divider component for voltage division sampling.

5. The photovoltaic testing platform of claim 4, wherein, The voltage divider assembly includes multiple voltage divider resistors connected in series, and each voltage divider resistor is connected in parallel with a bypass switch.

6. The photovoltaic testing platform of claim 4, wherein, It also includes a voltage detector, which is connected to the voltage divider assembly and is used to detect the voltage of the voltage divider output by the voltage divider assembly.

7. The photovoltaic testing platform of any of claims 1 to 6, wherein, It also includes a main control unit, which is connected to the voltage detector and the current detector of the photovoltaic test platform, respectively, and is used to identify the voltage detected by the voltage detector and the current detected by the current detector.

8. A photovoltaic testing system, characterized by, Includes the photovoltaic testing platform as described in any one of claims 1 to 7.

9. The photovoltaic testing system of claim 8, wherein, The photovoltaic testing system also includes a power grid and a DC source directly connected to the output of the power grid; The DC source is located outside the power loop of the photovoltaic test platform.

10. The photovoltaic testing system of claim 8, wherein, The photovoltaic testing system also includes a power grid and an AC source directly connected to the output of the power grid; The AC source is located within the power loop of the photovoltaic test platform, or the AC source is located outside the power loop of the photovoltaic test platform.

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