Rail transit power supply

March 19, 2016 successful supplier conference

After careful preparation, our company held a supplier conference in Shanghai on March 19, 2016, and all major raw material suppliers sent representatives to attend.

[New Announcement] Dechuang Local Protection Power Supply Passed Cape Test

On April 23, 2018, our newly developed local protection power supply passed the HALT test and other performance tests of Xuchang Cape Laboratory. Passing this test means that our local protection power supply fully meets the testing and use requirements of the State Grid; it means that in the relay protection industry, our company is at the forefront of the industry and is in the leading position in the industry; it means that our company is in In terms of design and production, great progress has been made; it means that in the follow-up product promotion and service, our company has more advantages and is more trustworthy. Power supply specific information is as follows: 1. product model 1.DFJDH30-5 the power supply is 85

Construction starts on China's longest power highway

How far is it from Jiuquan, Gansu to Xiangtan, Hunan? China's most cattle transmission line measured with its own footsteps: 2383 kilometers! This is currently China's UHV transmission from the farthest line... June 3, 2015, Jiuquan-Hunan ± 800 kV HVDC transmission project started, marking the UHV power grid into a comprehensive speed, large-scale construction of the new stage. Jiuquan-Hunan UHV Tips Passing through 5 Provinces (Cities) of Gansu, Shaanxi, Chongqing, Hubei and Hunan Newly Built Jiuquan and Xiangtan Converter Stations with a Converter Capacity of 16 million kW and a Total Length of 2383km Project Investment of 26.2 billion Yuan Planned in 2017

Scientists use lignocellulose nanofibers to make soft batteries

Cellulose nanofibrils (cellulosenanofibril,CNF) generated from wood pulp is known as the latest wonder material, which is a natural, renewable and cheap carbon nanotube. A team of scientists from the Royal Institute of Technology (KTH) in Sweden and Stanford University in the United States used this material to make a soft battery, which is more resistant to impact and impact than traditional hard batteries, and can resist high-strength pressure. The science team used CNF to create a lightweight porous aerogel-like substance, which KTH scientists MaxHamedi as "similar to a foam mattress,

Lin Boqiang: How to Optimize Power Distribution to Adapt to Economic "New Normal"

Due to the new normal of economic development, the development of China's power industry will face three new characteristics, which are both challenges and opportunities for power development: first, the growth rate of power demand will slow down; second, the economic transformation will change the power load curve, making the load The peak-valley difference becomes larger; the third is the increase in the share of new energy. If the traditional new power plant is used to deal with the rapid growth of the highest load, it will inevitably lead to a decrease in average utilization hours and a decrease in unit load rate, which will have a negative impact on the efficiency of the entire power system. On the other hand, simply reducing the installed capacity of thermal power to improve the utilization hours may not be conducive to the safety of the power system. modern power grid safety

How to achieve low loss design of high power density module power supply?

High power density module power supply currently occupies a dominant position in China's industry, communications and manufacturing fields. How to achieve low loss and heat dissipation balance of high frequency power supply in the design process has become the number one problem faced by many manufacturers and R & D personnel. This article will be a brief narrative analysis of this issue to help engineers more effectively achieve low-loss high-power power design. First of all, we take the application in the field of communication as the starting point, and look at the reasons why high-power and high-density power supplies have rapidly occupied the market in recent years. In the field of communication equipment design and development in China, it has always been based on low power.

TDK-Lambda switching power supply: a strong backing to protect the safety of the elevator

With the rapid development of social economy and the accelerating process of urbanization, elevator has become an indispensable convenient tool in our life. Today, the number of elevators in China has exceeded 3 million, with more than 0.2 billion people taking elevators every day. Whether it is stations, subways, office buildings, shopping malls or residential buildings, elevators are indispensable. Many of us have close contact and use elevators many times a day. Therefore, it can be said that elevator safety is closely related to almost everyone around us. In recent years, reports of elevator safety accidents have repeatedly occurred, and in some cities, elevators have repeatedly trapped people, injured people and injured people.

What are the factors that affect the quality of photovoltaic grid-connected inverter?

Polaris Solar Photovoltaic Network News: Not long ago, the General Administration of Quality Supervision, Inspection and Quarantine issued the Announcement on the Quality Status of National Supervision and Spot Check Products in 2015, which showed that the qualified rate of spot check of photovoltaic grid-connected inverters was less than 80%. This time, a total of 55 batches of photovoltaic grid-connected inverter products produced by 55 enterprises in 13 provinces and municipalities including Beijing, Hebei, Shanghai, Jiangsu, Zhejiang, and Anhui were randomly selected. "Compared with the foreign inverter market, the domestic photovoltaic inverter industry concentration is low. In terms of quality and technology, due to the late start-up time of the terminal market, domestic photovoltaic inverter manufacturers are generally small in scale, with stable structure, process and performance.

Our company participated in the 9th Xiamen Power Distribution Technology Application Forum

Our company participated in the 9th Xiamen Power Distribution Technology Application Forum