Converter detection platform and detection method

Abstract

An embodiment of the invention relates to the technical field of converters, and discloses a converter detection platform and a detection method. The hardware equipment of the invention comprises a battery simulation device, a converter to be measured, a measurement device, a grid simulation device, a grid failure simulation generating device, an anti-islanding RLC device, multiple switches, and the like. There are different system combinations for different detection items, and users can quickly switch between different detection items through the automatic detection system, and adjust parameters of the equipment such as the grid simulation device, the battery simulation device and the anti-islanding RLC device, so as to achieve the detection of different items, such as anti-island detection, charge and discharge detection, and voltage adaptability detection. At the same time, the battery simulation device is selected to replace the traditional two-way DC power supply and DC load, which simplifies the converter detection platform. The detection platform can detect current non-AC side voltage levels and current transformers with different capacities on the market, and the detectioncapacity can reach megawatt level.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of converters, in particular to a converter testing platform and a testing method. Background technique [0002] With the development of the energy storage industry, it will inevitably drive the rapid development of the energy storage related equipment manufacturing industry, and the energy storage converter, as an indispensable component for the energy storage system to connect to the grid, has attracted more and more companies to enter this market. In order to ensure that the energy storage converter selected in the construction of the energy storage system has complete functions, superior performance, durability and reliability, high operating quality and good interconnectivity, the energy storage Feature detection is very necessary. [0003] At present, there are special standards for the detection of energy storage converters in China, namely GB / T 34133-2017 "Technical Regula...

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Problems solved by technology

[0004] However, the inventors found that there are at least the following problems in the prior art: there are many rated voltage levels on the AC side of energy storage converters currently on the market, and the capacity is getting larger and larger, reaching the megawatt level

However, most of the current energy storage converter detection platforms are aimed at the detection of energy storage converters of 500kW and below, and do not have the detection capability of megawatt-level energy storage converters. There is a single detection object, limited detection capacity, and integrated automation. Low-level problems, and the detection platform has not yet integrated the detection function of high and low voltage crossing

For example, the patent 201410395363.X "a test platform for photovoltaic system converters" proposes a test platform for photovoltaic converters, which does not incorporate the function of high and low voltage ride-through detection, and cannot satisfy the diversity of energy storage converter products detection requirements; patent 201310503848.1 "a test platform for large-scale energy storage converters", the power level (maximum 500kW), voltage level and current level of the energy storage The detection requirements of watt-level energy storage converters, and the degree of automation is low; the standard NB / T31016-2011 based on the patent 201310503848.1 "a test platform for large-scale energy storage converters" is outdated, and the testing items cannot meet the latest requirements. specification requirements

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