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  • Measurement of DC Resistance of Transformer Coils and Analysis of Results

    2019-01-18 1325

    Transformer coil DC resistance measurement and analysis of its results 1 DC resistance measurement 1.1 Measurement method Measuring DC resistance is an important item in transformer tests. Through measurement, you can check the conductive circuit of the device for defects such as poor contact, poor welding, coil failure, and wiring errors. In the actual measurement of small and medium-sized transformers, the DC bridge method is mostly used. When the resistance of the coil under test is more than 1 ohm, it is generally measured by a single-arm bridge.

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  • Policy investment drives nearly 70% of companies in the electrical equipment industry

    2019-01-18 1430

    Benefiting from the policy and investment of two-wheel drive, the electrical equipment industry has become a 2014 concentration white horse “concentration camp”. As of June 23, a total of 77 of the 142 companies in the electrical equipment industry disclosed their 2014 interim results forecasts, of which 52 companies reported positive results, accounting for nearly 70%. It is understood that since this year, UHV releases, photovoltaic and wind power industry policies have been favorable. State Grid Corporation of China is expected to complete 381.5 billion grid investment in 2014 ...

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  • China's energy-saving transformers are in the stage of vigorous promotion

    2019-01-18 1200

    Although energy-saving transformers have very prominent advantages in technical performance, China is also currently vigorously promoting the popularization phase, but in terms of market acceptance, it is not optimistic. Power transformers are the key electrical equipment for power transmission. Transformer losses account for 30% to 40% of grid losses, while all transformers in China account for more than 3% of national electricity generation. Therefore, the state has been focusing on energy saving and consumption reduction of transformers, and vigorously promoted energy saving and emission reduction. Back in 201 ...

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  • Improved earnings and valuation boost dual development of electrical equipment

    2019-01-18 1206

    Driven by the improvement of both profitability and valuation, the new energy sector of the power equipment industry outperformed the Shanghai and Shenzhen 300 in 2013, out of the warming market. At present, the plate PE has reached 30 times, which is a historical high. We expect that the total investment of the industry will continue to grow steadily in the next few years. Therefore, it is judged that there will not be an overall big market in the power equipment sector in 2014, but there are still structural opportunities. The investment theme can be based on the concept of beautiful China and new urbanization Leader, suggest to pay attention to UHV, distribution network, ...

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  • Commitment

    2019-01-18 1670

    ...

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  • Talking about the development status of smart grid technology

    2019-01-18 1237

    Smart grid is the intelligence of the power grid. It is based on an integrated, high-speed two-way communication network. It uses advanced sensing and measurement technology, advanced equipment technology, advanced control methods, and advanced decision support system technology. Application to achieve the goal of reliable, safe, economical, efficient, environmentally friendly and safe use of the power grid. Brief introduction of smart power distribution network Smart grid is the intelligence of the power grid, which is based on an integrated, high-speed two-way communication network Through advanced ...

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