Chinese power grids incur losses due to poor lightning protection quality
19.03.2018As per scope of application, surge arresters may be divided into two types. Ones are intended to protect the expensive equipment, while the others protect power lines directly from lightning impacts. As Mikhail Zhitenev, Streamer expert on lightning protection equipment installation, said, the expensive equipment is usually equipped with high capacity top-quality surge arresters efficient at their task. As for power lines, electric engineers mount cheaper devices trying to save money. For example, the multi-chamber LLPDs' discharge capability is 2-3 times as high as that of such arresters.
The thing is that non-linear surge arresters and varistor manufacturers have driven themselves into a hopeless price race, Mikhail said. Apart from bona fide manufacturers, there appeared companies in the market who fail to follow high requirements for lightning protection products.
"This in no way blackens bona fide producers, but due to enormous extent of the market and high competition, the Chinese power engineers often face poor quality products," Mikhail Zhitenev said.
China's energy companies pay heavy prices due to quality problems of the purchased products. In one province, it is a common practice to replace all lightning protection devices along the entire line once the number of outages exceeds those of the previous years. This is due to the fact that region's electricians have a plan for the maximum allowable number of outages for 100 kilometers of lines per year, which is a key indicator of their work efficiency. Therefore, the local specialists are in constant search for the most rational ways to use funds intended to increase the lightning performance of lines, and they have already appreciated the Streamer products.
The outcomes of experimental-industrial operation of multi-chamber devices in the vicinity of Guangzhou city have proved the efficacy of these products, and experience of subsequent operation of the equipped lines confirms both the technology reliability and high quality of the delivered products.
Note that first LLPDs were installed in Guangzhou in the summer of 2013. Since then, the number of LLPDs installed in the region have increased at least twice each year, and the number of interruptions in the modified lines has not exceeded the set standards.
Why protecting the line against lightning with a CLG? or LLPD?
CIGRE 2022 finished last week
Streamer met with its old friends over the world - it was a nice and warm event, the first big one after the Covid times. CIGRE was also very useful in setting up new cooperation opportunities, mostly in the European region.
First LLPD installation for E-Distribuzione near Oderzo, Veneto, Italy
In 2019, the University of Napoli contacted Streamer Electric AG in order the find a lightning protection solution for medium voltage lines. Prof. Amedeo Andreotti was looking for medium voltage line protection devices for E-Distribuzione, the Distribution utility of Italy, part of the ENEL group owner of the electrical network in Italy but also many other electrical networks around the world. E- Distribuzione is actively looking to improve the lightning outage rate on their overhead line network and particularly in the northern part of Italy.
FIREX International Exhibition 2022 finished
The new LLPD Catalog 2022 is available for downloads
Some significant improvements implemented inside the document will help the user to better understand Streamer product portfolio and especially topics related to EasyQuench system and Line Lightning Protection Device product range, its operation principles and added values.
The international exhibition Intersec Expo finished this week
At the end of September, Streamer's topics have been presented at ICLP-SIPDA
The ICLP-SIPDA 2021 is a conference organized by the scientific committees of the International Conference on Lightning Protection (ICLP) and the International Symposium on lightning Protection (SIPDA). Conference took place from 20th to 26th September 2021. One of the two representatives from Streamer, Alexander Chusov, shared information about this conference and his thoughts about it
Ivan Zhitenev took part in the 50th St. Gallen symposium
The St. Gallen Symposium is a student initiative aimed at fostering an intergenerational dialogue and bringing world leaders and experts together.
Line Lightning Protection with LLPDd69z for NGCP in Pampanga, Philippines.
First TRANSEC installation Nicaragua
Frequently Asked Questions on Line Lightning Protection Devices (LLPD) are now aired on the Streamer webpage.
Malaysia On-Site Training for LLPD dM35z
LLPD project in Inner Mongolia, China
First installation of TRANSEC units in Ecuador
Vietnam Ha Giang Power Company will test Streamer innovative devices of lightning protection.
Ha Giang is a mountainous province with a complex topography and experiences extremely high lightning density during the thunderstorm season. 110 kV lines in the province mostly pass through mountainous terrain, many rivers, and streams, so breaks of the line wires due to lightning, are not uncommon. Most of the problem areas are concentrated in areas such as the Nam Ngan hydroelectric power plant and the city of Viet Kuang. Installation of innovative lightning protection devices to provide the region with uninterrupted power supply was necessary.
Supply of the dM35z LLPDs to Malaysia
A simple solution for the prevention of COVID-19
The first Transec unit has been installed in Kazakhstan and Central Asia by Streamer
In mid-March 2020, the first installation of the Transec unit has been completed in Kazakhstan.
Streamer JSC at the World Economic Forum in Davos
The 50th Anniversary World Economic Forum was held in Davos, Switzerland, from January 20 to 24, 2020. As part of the event various thematic meetings and discussions were organized and they were also attended by representatives of JSC Streamer - Ivan Zhitenev and Dmitry Terekhin.
FISE exhibition in Columbia
