Source: China Electric Power News

Building a new power system is an urgent need to promote clean and low-carbon energy transformation and help achieve carbon peak and carbon neutrality. As the best form of carrying a new power system, the digital grid plays a platform and hub role and is a key digital and intelligent infrastructure. Wuhan Langde Electric Co., Ltd. (hereinafter referred to as "Langde Electric"), a member company of SUN.KING Technology, is a new type of power system intelligent online monitoring system service provider and has always been at the forefront of the exploration of improving digital and intelligent management levels. In March this year, Langde Electric was successfully selected into the fifth batch of specialized and new "little giant" enterprises of the Ministry of Industry and Information Technology.

Give full play to the advantages of specialization, specialization and innovation, and "make up for shortcomings" and "fill in gaps" in the field of ultra-high voltage intelligent monitoring

<span this="" year,="" langde="" electric="" was="" successfully="" selected="" into="" the="" list="" of="" national-level="" specialized="" and="" innovative="" small="" giant="" enterprises="" for="" its="" intelligent="" sensing="" fault="" diagnosis="" technology="" application="" in="" uhv="" substations,="" playing="" a="" role="" "making="" up="" shortcomings"="" "filling="" gaps"="" key="" areas="" such="" as="" industry.="" according="" to="" mr.="" huang="" wenxiong,="" deputy="" general="" manager,="" one="" company's="" core="" products,="" "online="" monitoring="" device="" grounding="" current="" high-voltage="" cables",="" has="" been="" identified="" by="" china="" electricity="" council="" comprehensive="" level="" reached="" international="" advanced="" level,="" making="" technical="" shortcomings="" domestic="" brands="" field="" cables="" channels="" location.="" "gis="" partial="" discharge="" ultra-high="" frequency="" online="" (gom5010)"="" evaluated="" academicians="" experts="" organized="" being="" at="" leading="" filling="" gaps="" products="" power="" equipment="" terms="" sensor="" equivalent="" height,="" sensitivity="" system="" type="" identification.="" <="" span="">

Lande Electric's "GIL arc ultrasonic fault location online monitoring product" has been successfully applied to the Nantong Binjiang GIL pipeline project and the Xiluodu 500kV transmission project, replacing similar products from Siemens in Germany. The above representative products have been widely used in the field of transmission and distribution in various provinces and cities in China in recent years. Lande Electric is gradually becoming a representative domestic brand in the field of online monitoring of high-voltage smart grid systems. "Huang Wenxiong mentioned.

One of Langde Electric's core products - GIS The UHF partial discharge online monitoring device is suitable for partial discharge monitoring of combined electrical appliances with different voltage levels from 110kV to 1000kV. The company independently designed a wide-band integrated monopole sensor with high sensitivity and wide dynamic range signal monitoring technology, combined with frequency band combination filtering, signal intelligent denoising and noise correlation intelligent recognition technology, and using an intelligent learning pattern recognition algorithm based on fuzzy algorithm to improve the fault recognition rate and alarm sensitivity for different fault types. This product has been successfully applied to multiple UHV substations and converter stations, including the world's first ±800kV Qinghai-Henan UHV DC transmission project dedicated to the export of clean energy.

Continue to deepen the field of intelligent monitoring and exert efforts on a broader market

The field of intelligent online monitoring of power equipment in which Langde Electric is located is a rapidly developing emerging sector under the general trend of power grid intelligence. It is technology-intensive and involves a wide range of technologies, covering the intersection of big data and intelligent sensing, electronic technology, communication engineering and other disciplines. The speed of iteration of new technologies and new products is relatively fast.

Huang Wenxiong, deputy general manager of Wuhan Langde Electric Co., Ltd., said:

“Strengthening independent research and development is an important means for the company to maintain strong competitiveness in the industry. Langde Electric is determined to build a representative domestic brand with completely independent intellectual property rights in the field of online monitoring, and has achieved import substitution in the fields of ultra-high voltage transmission and hydropower generation. ”

In the past three years, Langde Electric's R&D investment has accounted for more than 11%. It currently has more than 50 patents, including 6 invention patents and 40 software copyrights. Three core products, including the GIS partial discharge ultra-high frequency online monitoring device, have been identified by the China Electricity Council and are at the international advanced or leading level. Based on strong R&D capabilities, Langde Electric has accelerated its overseas market expansion in the field of new energy in recent years.

With the popularization of environmental protection concepts and the support of national policies, the renewable energy power generation industry has been greatly developed and valued. "Lande Electric has paid attention to this trend of change very early. Since 2010, the company has actively increased its research and development efforts, starting from product research and development to cope with the opportunities and challenges brought by renewable energy power generation. We use more sensitive and reliable sensing technology, digital acquisition modules and devices, and powerful intelligent recognition technology to achieve modularization, digitization, and miniaturization of products, improve grid stability, and protect the power system. Lande Electric has chosen to focus on new energy power generation application scenarios such as "pumped storage" and "offshore wind power" where online monitoring systems can give full play to their own advantages, and embrace the broad market brought by renewable energy power generation." Huang Wenxiong mentioned.

At the same time, with the continuous advancement and in-depth implementation of the national "Belt and Road" and "Maritime Silk Road" policies, Langde Electric has followed the pace of the State Grid's cross-border power grid construction projects and gradually achieved the phased goal of entering the international market. Huang Wenxiong said, "At present, Langde Electric's core online monitoring products have been gradually applied in Russia, Israel, Bangladesh and other countries, and have won a good reputation."

Information source: China Electric Power News

Production: Yan Yanhua

Audit: Feng Yijun