Running out of acceleration ｜ The first domestic SEN structure regulatory transformer is put into operation in Baoding, Hebei

Recently, the first 10 kV Sen structural pressure adjustment transformer in China was put into operation in Fuping County, Baoding, Hebei. As a new type of transformer dedicated to the development of new energy, after being put into operation, the power grid voltage is limited to the end voltage of the grid -ended photovoltaic intermodal connection between the distributed photovoltaic area and the power mutual benefit between the lines to ensure that the new energy consumption and electricity are used. System safety and stable operation.

State Grid Power Power Supply Company staff went to Wangjiawan Village, Sheyuan Town to inspect the villagers to use distributed photovoltaic photovoltaic operations. (Photography: Zhai Wentao)

The photovoltaic resources in Baoding areas are abundant. In the first half of this year, Baoding distributed photovoltaic installed capacity increased by 606,000 kilowatts, an increase of 39.23%year -on -year. The distributed photovoltaic installed capacity has reached 3.205 million kilowatts, accounting for 55.1%of its total installed capacity. Because a large number of distributed photovoltaic installation positions are located in the mountainous area, most of them are in the middle and rear sections and even the end of the 10 kV lines of the distribution network. After the grid of the photovoltaic grid, it needs to be transported long -distance. Not coordinated, it is easy to cause the end voltage of the distribution line to rise. SEN structural voltage regulatory transformer uses the intelligent adjustment function of the control system to control the voltage in the optimized numerical interval to ensure the safe and stable operation of the power grid and the power equipment along the line. At the same time, SEN structural compression phase transformer can also adjust the "source lotus". "Popular metaphors, just like" left -handed and right hand ', transferred the route with a large amount of photovoltaic power generation and a large amount of load demand, reducing the conveying capacity of high load lines, increasing the load level of light load lines, realizing the load of load Balance. "The State Grid Baoding Power Supply Company Regulatory Center specially introduced Qiu Shi.

It is understood that in 2019, the State Grid Hebei Electric Power United Nations domestic universities and transformer manufacturing enterprises carried out joint production and research on production, university and research. After nearly three years of hard work, the first 10 kV SEN structural pressure -adjustment transformer was completed and put into operation. Compared with the traditional transformer that can only lift the voltage, the transformer can not only flexibly adjust the voltage amplitude value, but also adjust the phase angle to balance the trend (regulation+adjustment), further enhance the flexible adjustment capacity of the distribution network, and realize the distributed photovoltaic elimination. Breakthrough of the voltage regulation technology.

Since July 2021, State Grid Hebei Electric's characteristics of the rapid growth of distributed photovoltaics have grown in a new source grid in Baoding pilot construction, exploring the key technologies of distributed photovoltaic "group control", and realizing distributed photovoltaic "considerable" considerable "considerable". , Testable, adjustable, controllable ". A number of technical breakthroughs have been achieved in real -time perception, power prediction, and end voltage control in distributed photovoltaic operations. The first 10 kV SEN structural pressure -tone transformer was launched, which was another technical achievement, which was of great significance for further improving the level of pilot construction of the source distribution network.

"At present, we are doing operating data analysis and experience summary, and studying and formulating the feasibility scheme of the 35 kV line distribution grid to install the SEN structural voltage regulatory transformer, and gradually promote the application of such technologies in a higher voltage level grid. In order to promote the coordination and interaction of 'Yuanwanghe Reserve' and accelerate the construction of new power systems to provide technical support, "said Tianyuan, the Equipment Center of the State Grid Hebei Electric Power Academy. (Shi Jing Chai Xiaoliangyuanyuan)

Source ｜ Phoenix.com Hebei

Edit ｜ Lili

School pair ｜ Ai Chen

Review ｜ Longfei

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