"110kV one two bus and all outgoing lines, 10kV all outgoing lines and 9012 switch for cold standby." At 21:59 on November 10, with the last power transmission instruction issued by the dispatching office of Baotou Power Supply Bureau, the 220kV Dongliang substation was successfully started. The Bureau has taken a solid step in assisting Baotou photovoltaic "leader" project and promoting local economic development.

Shoulder the responsibility and build the heart Bridge

With decades of mining in Shiguai mining area, the geological environment has formed a subsidence area, which can not be reused. In response to the call of the state, Baotou City launched the photovoltaic "leader" project, used the idle and abandoned land in mining subsidence area to develop clean energy, expand the industrial development space, and promote the economic development of Baotou city. The photovoltaic industry is expected to generate 800 million kwh annually. In order to integrate the photovoltaic project load into the main network, the municipal government convened the Bureau, the municipal development and Reform Commission, the Shiguai District Committee and other departments as well as photovoltaic enterprises in the industrial park to negotiate and communicate for many times to jointly study the solutions.

The people have a voice, I have a response. Based on the principle of actively serving the local economic development, promoting the improvement of energy structure and clean energy development, the Bureau actively contacted with relevant government departments and fully supported the smooth implementation of Baotou photovoltaic "leader" project. After repeated research and field survey, it was determined to build a new 220kV Dongliang substation in Shiguai Industrial Park. In May 2018, the construction of Dongliang substation was officially launched, with a total investment of 194 million yuan. The substation covers an area of 5354 square meters, with two newly built 240MVA main transformers and a total line length of 18 km.

To overcome difficulties and overcome difficulties

The site of Dongliang substation in Shiguai district is surrounded by mountains. The geological structure is complex. The soil is yellow irrigated land. The annual temperature is 8-10 degrees lower than that of the urban area. In rainy and snowy weather, pedestrians and vehicles can hardly walk. The harsh geographical environment and climate conditions have become the biggest difficulty restricting the construction of the project. In order to make the project completed and put into operation as soon as possible, the planning department, production department, safety supervision department, engineering department and other departments and units of the Bureau coordinate and actively communicate to ensure the quality of the preliminary work of the project. The substation has the advantages of small construction area, long operation period and not affected by external factors.

Because there is only one 500kV Baobei substation around the 220kV Dongliang substation, and there is no 220kV outgoing line interval in the 500kV Baobei substation, and the expansion conditions are not available, which can not meet the requirements of Dongliang substation access system. For this reason, the main leaders of the bureau have actively communicated with the municipal government and the enterprise Asia Singapore longshun for many times, and planned to connect the 220kV lines of Baolong I and II to Dongliang substation. This scheme can not only make Dongliang substation get stable power supply point, but also make Yaxin longshun supply power directly from Dongliang substation, shorten the power supply radius, improve the reliability and reduce the power cost of enterprises It also meets the needs of local consumption of new energy and achieves mutual benefit and win-win results. During the construction period, in order to ensure the security load of asirongshun, the Bureau temporarily set up two 10kV power lines from the 110kV Shiyuan substation to supply power for it, and started the super power protection mode, and arranged an 800 KVA generator car to ensure the emergency power supply for the blast furnace of the enterprise.

If there is no condition, it is necessary to create conditions. When encountering steep hillside, the vehicles shall open the road in an emergency. The sections that cannot be driven into shall be paved by the construction personnel. Through the concerted efforts of all parties, the conveying channel leads directly to the top of the mountain, ensuring the timely arrival of equipment and materials. Perseverance, stone can be carved, natural moat into a thoroughfare. After careful planning and concerted efforts of all the staff, the "white plus black" and "five plus two" are at the construction site. In only one and a half years, Dongliang substation was "pulled out of the ground" and the iron towers were connected across the mountains, forming a beautiful landscape.

Wind and snow combined power transmission

On November 8, the sudden heavy snow swept the Shiguai mountain area, making the mountain road become muddy and difficult to travel. The construction vehicles skidded on the mountain, which made it difficult to start power transmission. "If you can't get in, walk!" Climbing the snow mountain and crossing the ditch ridge, the construction personnel once again inspected the line and eliminated the defects. The substation operation and maintenance personnel inspected the equipment to ensure the smooth start-up ceremony.

At about 15:00 on November 10, with the holding of the site kick-off meeting of 220kV Dongliang substation, the start-up of Dongliang substation officially started. The leaders of the Bureau guided the inspection on site, and the responsible persons and technical personnel of the engineering department, production department, safety supervision department, repair and test department, large user management office, measurement, dispatching, communication and transformation departments and technical personnel were all on site to cooperate with the start-up work. After on-site staff's intensive acceptance of equipment and data handover, verification of protection setting value, operation order execution, switching operation and other work, Dongliang substation successfully started power transmission at 21:59.

Xiongguan road is really like iron, and now step over from the beginning. The successful start-up of Dongliang substation not only meets the grid connection requirements of photovoltaic enterprises, but also increases the distribution of 220 kV substations in the north of Baotou, optimizes the 110 kV power grid structure in Shiguai District, improves the power supply capacity and reliability of the area, and meets the power demand of economic and social development in Shiguai district. It is understood that the photovoltaic leader project in Shiguai district is the largest and fastest construction project in Baotou. The smooth operation of photovoltaic project will also bring about 125 million yuan of poverty alleviation fund to Shiguai