DC charging pile detection system applied to site and method

Abstract

The present invention discloses a DC charging pile detection system applied to a site and a method. The DC charging pile detection system comprises an acquisition and battery voltage simulation unit, a load unit and a control unit, and the acquisition and battery voltage simulation unit is configured to detect whether a DC charging gun is connected reliably, after the situation that the DC charging gun is connected reliably is confirmed, acquire an AC input voltage and a current signal and an output DC voltage and the current signal, and convert the acquired analog quantity signals into the digital signals, calculate to obtain the input power, the output power, the efficiency and the harmonic numerical value of a DC charging pile and transmit to the control unit. The control unit calculates the efficiency and the power of the DC charging pile, and detects whether the DC charging pile adjusts the output values timely when an external environment changes. According to the present invention, the switching value control needed by the detection stages is realized by using a computer to send the control commands to directly control the relevant relays to turn off or turn on without needing the artificial manual control.

Description

technical field [0001] The invention relates to a DC charging pile detection system and method applied on site. Background technique [0002] In recent years, due to the increasingly prominent environmental problems and the depletion of fossil energy, in order to ensure the sustainable development of the country, the country has vigorously developed clean energy. Electric vehicles use electric energy as power and have unparalleled environmental and energy advantages. Therefore, they have been supported by the state. The state stimulates the development of the electric vehicle industry from various aspects such as policies and subsidies. At the same time, in order to ensure the healthy development of the electric vehicle industry, charging pile facilities have been vigorously constructed. In order to ensure the reliable charging of electric vehicle batteries and the stability of the power grid, the detection of charging piles is particularly important. [0003] At present, ...

AI Technical Summary

Problems solved by technology

[0004] 1. The on-site wiring of the equipment is complicated, and it is necessary to wire the battery simulation device, load device, detection device, etc., resulting in a lot of workload

[0005] 2. The detection equipment does not have a fully automatic detection function, and manual adjustment is required. After the insulation detection of the charging pile, the battery voltage simulation device is manually turned on, which not only causes a lot of workload, but also requires cooperation.

If the cooperation is not timely, it is easy to cause the charging pile to fail to start

[0006] 3. Each detection stage needs to manually start and stop each switch signal to detect the impact of each switch. There is no automatic opening and closing function, and the detection time is long

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