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2023

The National High Voltage and Large Capacity Flexible Low Frequency Transmission Project has been fully completed, and the Hangzhou 220 kV Zhongbu Frequency Converter Station has successfully started electrification

The North Star Power Transmission and Distribution Network learned that on May 6th, the Hangzhou 220kV Zhongbu frequency conversion station was successfully electrified, achieving controllable frequency conversion of AC 220V voltage level electrical quantities. At this point, the national high-voltage and large-capacity flexible low-frequency transmission project - the Hangzhou 220 kV flexible low-frequency transmission project infrastructure project - has been fully completed, entering the start-up and commissioning stage, and taking another crucial step towards the overall operation.

It is reported that flexible low-frequency transmission is an efficient AC transmission technology based on power electronics technology, which reduces the transmission frequency of 50 Hz in traditional power grids to 20 Hz. This can effectively improve the transmission capacity, distance, and efficiency of transmission lines. State Grid Zhejiang Electric Power Co., Ltd. focuses on the application prospects of flexible low-frequency transmission technology in offshore wind power transmission and high-density load areas in large cities, and takes Hangzhou as the pilot to apply high-voltage flexible low-frequency transmission technology to urban power grids nationwide.

笔记

State Grid Smart Grid Research Institute Lu Zhengang: Flexible Low Frequency AC Transmission Technology and Future Application Prospects for Offshore Wind Power

China Electric Equipment has done these things for the operation of the Tingshan Frequency Conversion Station of the Hangzhou Flexible Low Frequency Transmission Demonstration Project

Related Information

On March 21, Academician Youxian Sun of Zhejiang University and Professor Chunjie Yang of Zhejiang University visited Hangzhou Rizhi Electric Co., Ltd. to hear a project briefing and provide guidance.

On the morning of December 9, at the College of Control Science and Engineering of Zhejiang University, the two sides held a signing ceremony for their cooperation on the “New Technology Project for Energy-Saving, Low-Carbon, and Intelligent Manufacturing in Mineral Thermal Furnaces.”

On January 18, the annual technical work meeting was held at the company. Company executives, experts from the academician workstation, and technical backbones attended the meeting, which focused on the technical routes and planning for innovative products in the new year.

Recently, Hangzhou Rizhi signed an agreement with Wulanchabu Ferroalloy Industry Association in Wulanchabu City, Inner Mongolia. As a member of Wulanchabu Ferroalloy Industry Association, Hangzhou Rizhi Company developed and applied three-phase low-frequency flexible digital power supply in Wulanchabu Ferroalloy Production Enterprises. Ulanqab ferroalloy industry association to give specific technical guidance and support.