CN-122017418-A - Testing device and testing method for energy storage converter

CN122017418ACN 122017418 ACN122017418 ACN 122017418ACN-122017418-A

Abstract

The invention discloses a testing device and a testing method of an energy storage converter, wherein the energy storage converter comprises a first energy storage converter body and a second energy storage converter body, the first energy storage converter body is electrically connected with the second energy storage converter body, the testing device comprises a power grid, a charging and discharging testing unit, an off-grid testing unit, a fan testing unit, a communication testing unit and an industrial personal computer, and the industrial personal computer is electrically connected with the power grid, the charging and discharging testing unit, the off-grid testing unit, the fan testing unit and the communication testing unit. When the first energy storage converter body is in discharge, the second energy storage converter body converts alternating current input by the power grid into direct current and supplies the direct current to the first energy storage converter body, recycling of electric energy is achieved, a multi-dimensional data collection scheme is achieved through a plurality of units, and the defect of single data collection of an existing testing device is overcome.

Inventors

YANG JINHU
Ding Wanbin
DENG YUANLIN
WANG ZHIPENG

Assignees

深圳众城卓越科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260225

Claims (10)

1. The utility model provides a testing arrangement of energy storage converter, its characterized in that, energy storage converter includes radiator fan, first energy storage converter body and second energy storage converter body, radiator fan set up in first energy storage converter body, first energy storage converter body with second energy storage converter body electric connection, testing arrangement includes: The power grid is electrically connected with the first energy storage converter body and the second energy storage converter body, when the first energy storage converter body is in a charging mode, the first energy storage converter body is used for converting direct current into alternating current and inputting the alternating current into the power grid, and when the first energy storage converter body is in a discharging mode, the second energy storage converter body is used for converting the alternating current input by the power grid into direct current and inputting the direct current into the first energy storage converter body; The charging and discharging test unit comprises a universal meter and a Hall sensor, wherein the Hall sensor is electrically connected with the direct current loop of the first energy storage converter body, and the universal meter is electrically connected with the alternating current output end of the first energy storage converter body; The off-grid testing unit is in electrical signal connection with the alternating current output end of the first energy storage converter body; The fan testing unit comprises two wind speed sensors, wherein one wind speed sensor is arranged in the air inlet direction of the cooling fan, and the other wind speed sensor is arranged in the air outlet direction of the cooling fan; The communication test unit is in electrical signal connection with the first energy storage converter body and the second energy storage converter body; The industrial personal computer is in electric signal connection with the power grid, the charge and discharge testing unit, the off-grid testing unit, the fan testing unit and the communication testing unit.
2. The device for testing an energy storage converter according to claim 1, further comprising a burn-in tester, wherein a test cavity is provided in the burn-in tester.
3. The device for testing an energy storage converter according to claim 1, wherein each wind speed sensor is provided with a magnetic attraction zone; each wind speed sensor is provided with a magnetic attraction piece, and each magnetic attraction piece is magnetically attracted to each magnetic attraction area respectively.
4. The energy storage converter testing device of claim 1, further comprising a mobile cart, wherein the first energy storage converter body and the second energy storage converter body are both disposed on the mobile cart.
5. The energy storage converter testing device of claim 1, further comprising a circuit breaker, an isolation transformer and an ac contactor, wherein the circuit breaker is electrically connected to the first energy storage converter body and the power grid, the isolation transformer is electrically connected to the ac contactor and the second energy storage converter body, and the ac contactor is further electrically connected to the power grid.
6. The energy storage converter testing device of claim 1, further comprising a switch in electrical communication with the industrial personal computer, the first energy storage converter body and the second energy storage converter body.
7. A method of testing an energy storage converter according to any one of claims 1-6, wherein the method of testing is applied to a device for testing an energy storage converter according to any one of claims 1-6, the method of testing comprising: Controlling the first energy storage converter body to enter a charging mode, and controlling the universal meter and the Hall sensor to acquire a first performance index of the first energy storage converter body in the charging mode; Controlling the first energy storage converter body to enter a discharge mode, and controlling the universal meter and the Hall sensor to acquire a second performance index of the first energy storage converter body in the discharge mode; the off-grid testing unit is controlled to interrupt the electric connection between the power grid and the first energy storage converter body, and a third performance index of the first energy storage converter body in an off-grid mode is detected; Controlling each wind speed sensor to detect a fourth performance index of the cooling fan when the cooling fan is operated; controlling the communication test unit to be connected with the first energy storage converter body through electric signals, and detecting five properties th energy index of the first energy storage converter body when receiving or transmitting data; And uploading the first performance index, the second performance index, the third performance index, the fourth performance index and the five properties th performance index to the industrial personal computer.
8. The method of claim 7, wherein prior to controlling the first energy storage converter body to enter the charging mode, further comprising: detecting whether the operation states of the first energy storage converter body and the second energy storage converter body meet normal operation conditions or not; If the operation states of the first energy storage converter body and the second energy storage converter body meet the normal operation conditions, a self-checking completion signal is sent to the industrial personal computer; and if the operation state of the first energy storage converter body and/or the operation state of the second energy storage converter body does not meet the normal operation condition, sending a warning signal to the industrial personal computer.
9. The method according to claim 7, wherein after controlling the communication test unit to be electrically connected to the first energy storage converter body and detecting five properties th energy index of the first energy storage converter body when receiving or transmitting data, further comprises: aging the first energy storage converter body; and evaluating the first energy storage converter body after the aging treatment is completed to obtain aging degree information.
10. The method according to claim 7, further comprising controlling the first energy storage converter to convert dc power into ac power and feed the ac power back to the power grid after the first energy storage converter body is controlled to enter a charging mode, and controlling the second energy storage converter body to input dc power to the first energy storage converter body; The method comprises the steps that after the first energy storage converter body is controlled to enter a discharging mode, the method further comprises the step of controlling the second energy storage converter body to convert alternating current input by the power grid into direct current and input the direct current to the first energy storage converter body.

Description

Testing device and testing method for energy storage converter Technical Field The invention relates to the technical field of detection of energy storage converters, in particular to a testing device and a testing method of an energy storage converter. Background Along with the promotion of new energy strategy, the energy storage products are increasingly applied in the electric power system, and PCS is used as a core component of the energy storage equipment, and indexes such as charging efficiency, discharging performance, off-grid operation stability, fan heat dissipation capacity and communication reliability directly determine the overall performance of the energy storage equipment. Therefore, the comprehensive performance test of PCS is a key link of energy storage product production and acceptance. The testing technology for some high-power energy storage converters has some defects, such as large power loss in the testing process, the traditional testing adopts independent loads to consume electric energy, power recycling is not realized, and an integrated remote control and multidimensional data acquisition scheme is also lacking, so that the automation degree of the whole testing process is low. Disclosure of Invention In order to overcome the defects of the prior art, the embodiment of the invention provides a testing device and a testing method of an energy storage converter. The technical scheme adopted for solving the technical problems is as follows: In a first aspect, the present invention provides a testing device for an energy storage converter, where the energy storage converter includes a radiator fan, a first energy storage converter body and a second energy storage converter body, the radiator fan is disposed on the first energy storage converter body, and the first energy storage converter body is electrically connected with the second energy storage converter body, and the testing device includes: The power grid is electrically connected with the first energy storage converter body and the second energy storage converter body, when the first energy storage converter body is in a charging mode, the first energy storage converter body is used for converting direct current into alternating current and inputting the alternating current into the power grid, and when the first energy storage converter body is in a discharging mode, the second energy storage converter body is used for converting the alternating current input by the power grid into direct current and inputting the direct current into the first energy storage converter body; The charging and discharging test unit comprises a universal meter and a Hall sensor, wherein the Hall sensor is electrically connected with the direct current loop of the first energy storage converter body, and the universal meter is electrically connected with the alternating current output end of the first energy storage converter body; The off-grid testing unit is in electrical signal connection with the alternating current output end of the first energy storage converter body; The fan testing unit comprises two wind speed sensors, wherein one wind speed sensor is arranged in the air inlet direction of the cooling fan, and the other wind speed sensor is arranged in the air outlet direction of the cooling fan; The communication test unit is in electrical signal connection with the first energy storage converter body and the second energy storage converter body; The industrial personal computer is in electric signal connection with the power grid, the charge and discharge testing unit, the off-grid testing unit, the fan testing unit and the communication testing unit. In a second aspect, the present invention further provides a testing method of an energy storage converter, where the testing method is applied to the testing device of an energy storage converter described in any one of the foregoing, and the testing method includes: Controlling the first energy storage converter body to enter a charging mode, and controlling the universal meter and the Hall sensor to acquire a first performance index of the first energy storage converter body in the charging mode; Controlling the first energy storage converter body to enter a discharge mode, and controlling the universal meter and the Hall sensor to acquire a second performance index of the first energy storage converter body in the discharge mode; the off-grid testing unit is controlled to interrupt the electric connection between the power grid and the first energy storage converter body, and a third performance index of the first energy storage converter body in an off-grid mode is detected; Controlling each wind speed sensor to detect a fourth performance index of the cooling fan when the cooling fan is operated; controlling the communication test unit to be connected with the first energy storage converter body through electric signals, and detecting five properties th energy index of the first en