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On May 7, the annual maintenance work of the 800 kV Shaoshan converter station ± State Grid Hunan Electric Power Co.
, Ltd.
(hereinafter referred to as "State Grid Hunan Electric Power") was in full swing
.
The valve cooling system and the water cooling system of the regulator developed by the company apply new water purification materials, lean water quality control devices and corrosion protection technology systems, which have been in operation for nearly one year and have stable operation, effectively ensuring the constant temperature control of converter valves and dual water-cooled controlled cameras, marking the successful application of UHV water cooling key technology, and breakthroughs have been made in this technology research
.
In 2013, during the inspection of the ± 500 kV Goose City converter station, State Grid Hunan Electric Power found that the key materials for water production/distribution in the valve cooling system were easy to deteriorate, the control of the water-cooled medium was not fine, and the metal corrosion and scaling were important safety hazards
in the operation of HVDC transmission equipment.
The company and the Chinese Academy of Sciences formed a technical research team to carry out research
on the reliability improvement system of water cooling system.
Relying on the scientific research project of "Key Technologies and Engineering Applications of High-power Power Electronic Water Cooling Equipment", the research team carried out research in anti-fouling treatment, insulation technology, metal materials, rapid assessment, etc.
, and after countless comparison tests between laboratories and sites, successfully mastered key technologies such as in-depth water quality treatment, equipment corrosion monitoring, metal biomimetic hydrophobicity and anti-corrosion, and successfully developed a complete set of water cooling systems
suitable for new high-power power electronic equipment.
The system develops a series of new water purification materials, which increases the filtration efficiency of hydrophilic antifouling membranes by 1 times, the antifouling ability by 2 times, and the operating cycle of large-capacity ion exchange materials by 1 times.
Carry out full-performance, simulation acceleration tests and manufacturing process optimization, and develop water transmission and distribution devices with excellent weather resistance; The microscopic reaction mechanism of water-cooled medium and metal of converter valve was revealed, and the core indicators of lean water quality control were proposed.
Develop a series of multi-stage advanced treatment devices, so that the water quality meets the standard and remains stable for a long time, and the leakage current is reduced by more than 50% compared with conventional technology; A dynamic monitoring method of electrochemical corrosion based on frequency modulation is proposed, and a special sensor and online monitoring device are developed to ensure that the data acquisition interval is less than 500 seconds and the error is less than 5%.
The first interface-enhanced biomimetic hydrophobic anti-corrosion technology for marine organisms has reduced the metal corrosion rate by 96% and the stability time of the anti-corrosion film layer has exceeded 2 years.
Independently build a multi-source fusion simulation platform of mechanical, electrical, hydraulic and thermal to achieve rapid evaluation of material, device and system performance, and reduce the design and manufacturing cycle of new products by 2/3; Develop a series of water cooling systems
for engineering applications and scientific research of high-power power electronic equipment.
It is reported that the project is superior to the water cooling system of foreign manufacturers such as ABB and Siemens, and has been authorized 15 national invention patents, 6 software copyrights, and published more than 20 papers, including 9 SCI/EI papers, 1 compilation standard, and 1 monograph
.
The project has passed the certification of authoritative institutions and has been successfully applied to important projects such as Qishao UHVDC, Brazil Beautiful Mountain, Xiamen Flexible DC, etc.
, and has been extended to nuclear power, high-speed rail, petrochemical and other fields; It is of great significance to the safe production of power grids, the efficient use of clean energy, and the reduction of environmental pollution, and the economic, social and ecological benefits are significant
.
On May 7, the annual maintenance work of the 800 kV Shaoshan converter station ± State Grid Hunan Electric Power Co.
, Ltd.
(hereinafter referred to as "State Grid Hunan Electric Power") was in full swing
.
The valve cooling system and the water cooling system of the regulator developed by the company apply new water purification materials, lean water quality control devices and corrosion protection technology systems, which have been in operation for nearly one year and have stable operation, effectively ensuring the constant temperature control of converter valves and dual water-cooled controlled cameras, marking the successful application of UHV water cooling key technology, and breakthroughs have been made in this technology research
.
In 2013, during the inspection of the ± 500 kV Goose City converter station, State Grid Hunan Electric Power found that the key materials for water production/distribution in the valve cooling system were easy to deteriorate, the control of the water-cooled medium was not fine, and the metal corrosion and scaling were important safety hazards
in the operation of HVDC transmission equipment.
The company and the Chinese Academy of Sciences formed a technical research team to carry out research
on the reliability improvement system of water cooling system.
Relying on the scientific research project of "Key Technologies and Engineering Applications of High-power Power Electronic Water Cooling Equipment", the research team carried out research in anti-fouling treatment, insulation technology, metal materials, rapid assessment, etc.
, and after countless comparison tests between laboratories and sites, successfully mastered key technologies such as in-depth water quality treatment, equipment corrosion monitoring, metal biomimetic hydrophobicity and anti-corrosion, and successfully developed a complete set of water cooling systems
suitable for new high-power power electronic equipment.
The system develops a series of new water purification materials, which increases the filtration efficiency of hydrophilic antifouling membranes by 1 times, the antifouling ability by 2 times, and the operating cycle of large-capacity ion exchange materials by 1 times.
Carry out full-performance, simulation acceleration tests and manufacturing process optimization, and develop water transmission and distribution devices with excellent weather resistance; The microscopic reaction mechanism of water-cooled medium and metal of converter valve was revealed, and the core indicators of lean water quality control were proposed.
Develop a series of multi-stage advanced treatment devices, so that the water quality meets the standard and remains stable for a long time, and the leakage current is reduced by more than 50% compared with conventional technology; A dynamic monitoring method of electrochemical corrosion based on frequency modulation is proposed, and a special sensor and online monitoring device are developed to ensure that the data acquisition interval is less than 500 seconds and the error is less than 5%.
The first interface-enhanced biomimetic hydrophobic anti-corrosion technology for marine organisms has reduced the metal corrosion rate by 96% and the stability time of the anti-corrosion film layer has exceeded 2 years.
Independently build a multi-source fusion simulation platform of mechanical, electrical, hydraulic and thermal to achieve rapid evaluation of material, device and system performance, and reduce the design and manufacturing cycle of new products by 2/3; Develop a series of water cooling systems
for engineering applications and scientific research of high-power power electronic equipment.
It is reported that the project is superior to the water cooling system of foreign manufacturers such as ABB and Siemens, and has been authorized 15 national invention patents, 6 software copyrights, and published more than 20 papers, including 9 SCI/EI papers, 1 compilation standard, and 1 monograph
.
The project has passed the certification of authoritative institutions and has been successfully applied to important projects such as Qishao UHVDC, Brazil Beautiful Mountain, Xiamen Flexible DC, etc.
, and has been extended to nuclear power, high-speed rail, petrochemical and other fields; It is of great significance to the safe production of power grids, the efficient use of clean energy, and the reduction of environmental pollution, and the economic, social and ecological benefits are significant
.
