Testing platform for total-power wind-power converter with various specifications

Abstract

Disclosed in the invention is a testing platform for a total-power wind-power converter with various specifications. The testing platform comprises a high-voltage switch cabinet, a step-down transformer, a first low-voltage switch cabinet, a second low-voltage switch cabinet, a reactive power compensation cabinet, a network side filter reactance capacitance unit, a test bench, and a phase shift transformer. The second low-voltage switch cabinet, the reactive power compensation cabinet, the network side filter reactance capacitance unit, the test bench, and the phase shift transformer are connected successively in an end-to-end mode to form a power self-circulation loop. During testing, after the high-voltage switch cabinet takes power from a high-voltage bus, the power is transmitted to the power self-circulation loop by the step-down transformer and the first low-voltage switch cabinet. The testing platform can carry total-power converter with different voltage levels and with topological structures of a back-to-back type dual PWM type and an uncontrollable rectifier boost and PWM type. During the building and testing processes, no generator needs to be installed for cooperating with the testing platform, so that the occupied area of the platform is reduced, the building cost is lowered, the experiment preparation time is shortened, and the platform utilization rate is enhanced.

Description

technical field [0001] The invention relates to a wind power converter test platform, in particular to a multi-standard full-power wind power converter test platform. Background technique [0002] As the main force of new energy power generation, wind power has been greatly developed in recent years. Generally speaking, according to the type of wind turbine, the wind power generation system can be divided into: direct-drive type and doubly-fed type. The corresponding types of wind power converters are divided into two categories: full power converters and doubly-fed converters. In order to meet the requirements for on-site operation of wind power converters, it is necessary to build a test platform to detect various performance indicators of wind power converters according to the topological structure of the converter and the field application conditions. At present, the mainstream solution is to use the motor to drive the wind turbine to generate electricity in the test p...

AI Technical Summary

Problems solved by technology

Since different types of wind power converters have different topological structures, the requirements for generator models are also different, resulting in poor compatibility of the test platform

Before testing wind power converters with different topological structures, it is necessary to replace the generator of the corresponding model, which not only increases the preparation time for the experiment, but also increases the construction cost of the test platform and reduces the utilization rate of the test platform

For the test platform of the full power converter, when using the motor to drive the generator to generate electricity, although the transformer can replace the link of the motor to drive the generator, there is also the problem of poor compatibility of the test platform, because most types of transformers only It can meet the test requirements of one of the specifications of wind power converters, wind power converters of different voltage levels and different topologies cannot be tested on the same test platform

Therefore, when conducting experiments on full-power wind power converters of various specifications, it is necessary to carry out cumbersome platform transformation, which increases system risk, increases experiment preparation time, and reduces platform operating efficiency.

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