On November 8, 2021, the first wind turbine of Jiangsu Rudong Offshore Wind Farm was successfully put into operation through flexible DC transmission, opening a new era in China of offshore wind power to transmission through flexible DC transmission, marking the successful application of NR flexible DC protection & control system in offshore wind power project.
Rudong wind power project is the first offshore wind power flexible DC transmission project in Asia undertaken by the Three Gorges group and China Guangdong Nuclear Power Group.
NR provides complete set of protection & control system
NR provided a complete set of protection & control system, measurement system
NR provided a complete set of protection & control system, measurement system, integrated monitoring, AC protection, fault recording, substation monitoring, online monitoring, power quality monitoring, infrared temperature measurement, cyber security and other complete sets of secondary systems and measurement equipment.
Since the implementation of the project, NR has deeply studied the complex operating conditions of offshore wind power flexible DC transmission project, the unique characteristics and requirements of fault ride through and offshore operation & maintenance developed the flexible DC protection & control system with high performance, compactness and high anti marine corrosion.
Island adaptive control and oscillation suppression strategy
Island adaptive control and oscillation suppression strategy are proposed, which effectively solves the problem of high-frequency oscillation in renewable grid connection.
In addition, the on-line switching strategy of offshore double branches and the rotation switching strategy of wind farm solve the problems of single and double branch conversion of flexible DC transformer and overload of converter, enhance the operation reliability and access friendliness.
NR develops the direct integrated monitoring system
NR Electric has developed the direct integrated monitoring system
In order to meet the special needs of unattended offshore converter stations, NR Electric has developed the direct integrated monitoring system, which realized the integrated comprehensive monitoring of offshore wind farm, AC substation and flexible DC main and auxiliary control system, realized the comprehensive monitoring and full-dimensional display of systems and equipment.
It significantly improves the operation & maintenance efficiency of offshore wind power flexible DC transmission project.
NR’s renewable generation flexible DC transmission system
The grid connection and operation of the first unit of Rudong offshore wind power is just the beginning, and more wind turbines will be connected to the grid in succession.
NR Electric’s renewable generation flexible DC transmission system, with its friendly grid access performance, will escort more large-scale wind power in the future.
