Three Gorges Electric Energy Delivery First Hub Station -the localization transformation of the Longquan changing station control system is over

The Three Gorges Daily (Reporter Wanlongyun and Correspondent Tang Dongjun) At 24:00 on June 30, the Longquan changing station traveled to the Three Gorges Electric Electricity over 1.1 billion kilowatt -hours in the same month. As the first localized overall renovation project of the State Grid DC control system, since the Longquan changing station has been replaced by the "Chinese brain" from 131 on May 31, it has undergone multiple tests of high temperature, rainstorm and high load. Get rid of dependence on foreign control systems.

On the morning of July 1st, the reporter came to Longquan State Station in the State Grid Hubei DC Company in Longquan Town, Yiling District. The Longquan Streaming Station was launched in June 2003. It is the first stream of streaming stations in the Three Gorges Inspection and Power Transformation Project. In the past 19 years, the electricity of the station was sent to East China, accounting for 15%of the power generation energy of the Three Gorges Power Station.

Entering the field area, several "ABB" logos are visible. Webmaster Wu Wei introduced that Swedish ABB is an old intelligent integration company in the world. Most of the equipment and factory buildings of the Longquan Stream Station are built and installed by the company.

According to reports, due to the adjustment of the enterprise, after 2014, the Longquan Streaming Station Control System is no longer the mainstream products of ABB, and some core devices are discontinued, such as the same type of host and board chip. At the same time, after the warranty period, the company will no longer provide services to return to the factory for maintenance and spare parts. "The biggest problem is that the follow -up service response is slow." Duan Shiqi, a technician of Longquan Streaming Station, said that once a failure occurs, you can only repair it on the spot.

In October 2021, the DC control protection system reconstruction project of Longquan replacement station was launched. "This is the first overall transformation project of the State Grid DC control system." Ai Liang, chief engineer of the reconstruction project, said that it is necessary to ensure the stable operation of the national power artery. Electricity is interrupted; the second is the rapid development of DC transmission technology in my country. In key equipment such as controlling and protecting the protection host, light CT pattern card, domestic core companies are no longer inferior to foreign companies.

Wu Wei introduced that due to the major transmission task, the equipment can only turn around at a distance, and the transformation is facing challenges. But every participant is full of energy and sense of accomplishment. "A light CT pattern card, it costs 280,000 yuan to buy foreign countries, while domestic equipment is about 20,000 yuan. This is a powerful proof of breaking the blockade of foreign technology."

The transformation lasted nearly 8 months. On May 20 this year, the Longquan Streaming Station was replaced with the "Chinese Brain" startup debugging; on May 31, the debugging ended, and the trial operation was started; on June 7, after 168 hours of trial operation, it was officially launched; Power delivery energy under the system exceeds 1 billion kilowatt -hours ...

In the field area, in addition to "ABB", the reporter saw more "NR" logo, which is the abbreviation of Nanrui Group, an enterprise in the field of power and industrial control in my country. This transformation involves 46 hosts, 1019 boards, and 68 sets of measurement equipment. Wu Wei said that in the future, they will gradually be updated according to the operation of the equipment, and finally achieve the soft and hardware localization of the entire station.

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