ABB风电低电压穿越测试装置.pdf

Technical Paper: Low voltage ride-through testing of wind turbine converters at ABB helps wind turbines meet the requirements of IEC 61400-21 more quickly (by authors Jouko Niiranen, Slavomir Seman, Jari-Pekka Matsinen, Reijo Virtanen, and Antti Vilhunen) Abstract The testing of low-voltage, ride-through capability of wind turbine converters recently has been standardized in the 2nd edition of IEC 61400-21. Thus, testing of the converters produced in the factory is important to shorten the on-site testing time required for meeting the requirements of IEC 61400-21. ABB recently has built a new test facility for its wind turbine converters that is capable of testing those units with up to a 3 MW continuous power rating. A profile of this test facility, and the results of a factory test of a full-power wind turbine drive, follows below. Introduction In order to study the low voltage ride-through (LVRT) behavior of wind turbines, it is necessary to carry out on-site tests and accurate transient simulation analyses, to understand the impact of the power system disturbances on wind turbines in operation. Based on the knowledge obtained from the type test, it is possible to validate the wind park grid code compliance by simulating the overall wind park behavior during the fault. However, on-site testing requires expensive test equipment and personnel to be present in the often remote location of the wind farm. Because the tests are required to be done on several power levels, a correct wind speed must prevail during each test. This means that often considerable time is spent waiting for winds to be suitable for testing. Further, if some problems emerge and require changes in the hardware or software, it may be necessary to start the tests from the beginning. Naturally, significant cost and test-time reductions can be obtained via proper factory testing -- before going to the on-site tests. In factory tests, the wind is replaced by a speed-controlled