In August 2016, the party group of China Southern Power Grid Co., Ltd. issued the “General Outline of South Networkâ€. Over the past year or so, all units have used various forms to make the “Southern Net General Program†take root in all aspects and all aspects of production, operation and management of enterprises. In the “battlefield†of poverty alleviation, the site of rushing to repair electricity, and the field of upgrading services, Nannet people practiced the “General Outline of South Network†with practical actions. In order to deepen the cultivation of the thick-grained Nanwang culture, this newspaper has set up a “Deeply Practice the Outline of the Southern Network†column from this issue, excavating the vivid story of Nannet people practicing the “Southern Net Master Planâ€, with a view to further stimulating employees to love and respect their work. Concentric endogenous driving forces.
On May 15, China Southern Power Grid Corporation announced that it will start the construction of Kunliulong DC project, the first UHV multi-terminal hybrid DC project in the world. According to the news, as a member of the engineering-led research and development team, the South China Research Institute of DC Transmission and Power Electronics Technology Research Institute (hereinafter referred to as the "DC") has been excited. Director Li Yan said with excitement: "Kunliulong's DC technology breakthroughs have entered a new phase. We must live up to expectations and master a number of core technologies and key technologies with independent intellectual property rights through project construction."
“Foreigners can do it, we can do itâ€
Kunliulong DC is the first hybrid HVDC project in the world to use passive flexible DC and sending DCs. Many technical problems are encountered by the scientific research team for the first time. Through the arduous efforts of the DC Institute team involved in the preliminary research, the company has initially formed a technical system of UHV flexible DC, traditional DC and flexible DC hybrid technology, and provided comprehensive support for the decision of the China Southern Power Grid Corporation in the Kunliulong DC project technology program.
"We currently have two technical research teams stationed in Beijing and Xi'an for a long time. We are making unremitting efforts to control and protect equipment research and prototype testing." Xu Shuzheng, Deputy Director of the DC Institute Says, "We have made adequate preparations for the advancement of the project in technology."
In the eyes of many people, the South China Institute of Technology DC is a fearless team.
The time went back to 1989. China's first high-voltage direct current transmission project - Ge (Gezhouba) (Shanghai) ± 500 kV DC project put into operation, description of the "bidding specification book" "system research" "set design" "initiative process", respectively “Foreign consultants are responsibleâ€, “foreign contractor is responsibleâ€, “foreign contractor is responsible†and “all AC and DC equipment are importedâ€. In order to change this state, in 2004, the research and development team of DC transmission technology of South Net Research Institute provoked a beam. "Foreigners can do it, we can also do it." In 3 years, they relied on the Guiguang 2nd project to establish a production, learning, research, and independent innovation team, and established the HVDC system integration technology system for the first time in China. The goal of systematic research, complete set design, control and protection system testing, station system debugging, and system debugging has been realized.
From the first demonstration project of independent DC transmission in China in 2007 to the world’s first UHV DC transmission project in 2009 and the world’s first multi-end flexible DC transmission project in 2013, the world’s first application of flexible DC transmission technology will be in 2016. To the backbone grid... There are almost all DC R&D personnel busy. Their technological achievements of independent innovation have been applied to all DC power transmission projects of China Southern Power Grid, and they have led the world's DC power transmission technology step by step.
"It is worth working hard again"
The DC project in northwestern Yunnan is currently the longest project in the South China Grid within the scope of the DC line. The Xinsong Converter Station site at the Senduan Complex has complex conditions. It is located at the highest altitude in the network and has an earthquake intensity of up to 8 degrees. This is proposed for supervision of the main equipment. Challenge.
As early as 2016, Zhao Xiaobin, director of the Integrated Technology Research Office of DC Institute, led a group of young people to repeatedly discuss the selection and verification of new equipment and key components. "Originally thought that the difficulty and Yunguang ± 800 kilovolt DC project quite, did not think actually much trickier." Zhao Xiaobin said with emotion.
In order to solve the problem of the main loop resonance, DC established the “Party Commando†and conducted multiple discussions and investigations with various transformer equipment manufacturers on the design and test methods for warming up. The key parameters of the program were set for a full six months. The plan was changed again and again, the data was measured and measured again, and the power grid simulation technology was used again and again to find out the problems. Finally, the decision was made to adopt a 100-Hz wave trap in the project. Zhao Xiaobin was unforgettable for the days of his struggle. "The last equipments were all qualified. I think it is worth the hard work."
At present, the research scope of DCS covers core technologies such as integrated HVDC technology, high-voltage high-capacity flexible HVDC transmission, HVDC circuit breakers, and STATCOM. It has led more than 10 national-level major scientific research projects and has obtained more than 100 patent authorizations, leading the way. Prepare 3 international standards. Among them, the project of “Autonomous Technology Development and Engineering Practice for Complete Design of HVDC Power Transmission Project†won the first prize of National Science and Technology Progress Award for 2011; “The Technology Innovation of Ultra-large AC and DC Power Grid and Its Application in National West-to-East Electricity Transmission†won 2017 The National Second Prize for Scientific and Technological Progress of the Year; the “UHV ± 800 kV DC Transmission Project†project won the 2017 National Special Prize for Scientific and Technological Progress.
"Experience Talents in Key Projects"
This highly successful team currently has two senior technical experts, 11 third-level and above assistant technical experts, and three overseas returnees. Giving young researchers the burden and supporting them to demonstrate their talents through innovative practices and enhance their abilities is one of DC's “DC brave†team culture.
The commissioning work of the DC project can best show whether the team members are united, enterprising, selfless, and responsive. Because debugging starts, it must be on standby at any time. Even during the Spring Festival holiday, everyone understands that “no vacations are suspended.†Regardless of where people are, they continue to work on their computers and ensure that the tasks will be completed.
According to the arrangement, the short-circuit trial in northwestern Yunnan was scheduled to take place on the evening of May 4. At 7 o'clock on the evening of the same day, personnel from the Yunnan and Guangdong test teams sent by the South China Research Institute of Science and Technology had been put on standby at the scene. Due to the complexity of the situation, there was no delay in the dispatching. The commander, Yang Lan, was able to keep the other comrades of the debugging team awake and stayed in the main control room to wait for instructions. At 1 a.m. on May 5th, the dispatcher finally ordered to start the test. The debugging team was quickly put in place. Yang Hao explained the precautions. At this time, the Shenzhen test team had been holding the high temperature and watched for 6 hours in a mosquito bite environment. At about 4 o'clock in the morning, the last AC short-circuit test at the Eastern Station was carried out. With the end of the “5432†countdown, the ground was heard with a thunder and a flash of light leaped up, marking the successful completion of this short-circuit test. After confirming the control protection actions and the correct response of the system at the two stations, the members of the debugging team breathed a sigh of relief, and it was almost dawn to finish the work on that day. Participating officer Wei Tianan Liu said: "Perhaps it may be hard, maybe tired, but our youthful years have left behind a different kind of memories."
Dual Trigger Surface Cleaners with many different function: edge function, Water Broom function, water blaster function, chewing gun Nozzle functions. With different material deck, plastic deck, stainless steel deck, and etc.
Representative of the product:Chewing Gum Removal Surface Cleaner,Twin Trigger Surface Cleaner.
The Surface Cleaner is better for home use, make the floor or wall cleaning easier, please do not forget to attach with your pressure washer before using them.
Edger Surface Cleaner,Dual Gun Floor Cleaner,Deck Steel Surface Cleaners,Vacuum Carpet Cleaners,Chewing Gum Removal Surface Cleaner,Twin Trigger Surface Cleaner
NINGBO HAISHU OMWAY MACHINERY FACTORY , https://www.cleantheway.com