10 Anlagen haben das LVRT Zertifikat welches neuerdings erforderlich ist in China...unter anderem eine 1,5 MW Anlage von Nordex und "taugen" tut die 2,5 MW auch.) in der zu Twin Ridges eingestellten PDF findet sich folgendes Unique to the interconnection of wind turbines is a requirement for Low Voltage Ride Through Capability (LVRT). Appendix A of the impact study states: The low voltage ride through capability of the Nordex N90 WTG was tested by applying a three-phase 9-cycle fault at the 138 kV interconnection bus and, as well as, a three-phase 9-cycle fault at the 34.5 kV collector bus. It is noted that the U2-073 facility stayed connected to the grid during these disturbances. LVRT? (Anm. “It’s a big deal. Everyone is talking about this,” says an adviser at one manufacturer. ...link s.u.)...das kennen wir doch bereits aus China, wo Nordex einer der wenigen Hersteller ist welche aktuell überhaupt ein LVRT zertifikat für seine Anlage vorweisen kann (nur 10 Anlagen in China können dies ja aktuell) und dies ist in China wohl nun generell erforderlich: "China plans stricter grid code for turbines in bid to curb outages [2011-8-16]" The CEPRI says it plans to add new testing facilities, but it is not known when these will be set up. About ten models have completed LVRT testing so far, says Wang Weisheng at the institute’s renewable-energy department. They include 1.5MW models made by Nordex and Ming Yang. But with 50 or 60 suppliers in China, the institute is under pressure, says Olsen. The tests can take more than two months, depending on the wind. Das beste findet sich in dem Artkel aber weiter oben: "And industry sources say that existing wind farms without LVRT capability may be the first to be disconnected in the future when grid capacity is saturated." http://www.energychinaforum.com/news/54471.shtml Das wird noch sehr lustig hier...kann ich mir vorstellen...wenn dies mal alle, also auch das Handelblatt realisieren... andere Quelle: Thursday, 07 April 2011 11:51 LVRT absence causes mass turbine shutdown in China http://scottishrenewablessupplychain.com/...wn-in-china&Itemid=66 Orginalquelle: recharge news von Dr. Faust eigestellt, Danke dafür Quelle "Twin Ridges" google: "TESTIMONY AND EXHIBITS OF CRAIG TABORSKY ON BEHALF OF THE STAFF OF THE PUBLIC SERVICE COMMISSION OF MARYLAND AUGUST 3, 2011" für PDF: (bei mir war es der 2. Treffer...vielleicht auf das Datum achten, vor dem download) BEFORE THE PUBLIC SERVICE COMMISSION OF MARYLAND IN THE MATTER OF ... webapp.psc.state.md.us/.../NewIndex3_VOpenFile.cfm?.. |