Both swords strike together! The three-dimensional wound core transformer of the DC back-to-back project in the Greater Bay Area was successfully put into operation

On December 13, 2021, the AC field of the Guangdong Power Grid DC back-to-back Guangzhou project (the DC back-to-back project in the middle channel of the Greater Bay Area) was successfully launched and put into operation, marking the phased results of the project construction. The 3150kVA energy-saving and environment-friendly three-dimensional wound core dry-type transformers supplied by Haihong Electric Co., Ltd. have all been successfully put into operation.

December 25, 2021 Guangdong Power Grid DC back-to-back Dongguan project (Dawan District Nanyue DC back-to-back project)  The AC field was put into operation for the first time, and the first 20MVA high-efficiency and energy-saving three-dimensional wound core oil-immersed power transformer for Southern Power Grid supplied by Haihong Electric Co., Ltd. was successfully put into operation. put into operation.

As we all know, the Guangdong-Hong Kong-Macao Greater Bay Area is the region with the highest degree of openness and the strongest economic vitality in China, and it is also the region with the most concentrated power load in South China—the load in the Pearl River Delta region accounts for 77% of the load in Guangdong Province. The huge load, superimposed on two of its own characteristics, makes the Guangdong power grid have the risk of large-scale power outages. The flexible DC back-to-back project connecting power grids in different regions will effectively help resolve major safety hazards in Guangdong power grids. At present, the project is mainly divided into two parts: one is the middle channel project in Guangzhou, which connects the power grid in the northwest region of Zhuhai and the power grid in the northeast region of Zhuhai; . After the completion of the project, it will greatly enhance the power supply security capability of the Guangdong-Hong Kong-Macao Greater Bay Area. In the future, the Greater Bay Area will be able to "receive" and "use up" large-scale new energy sources. Guangdong Power Grid will be able to accept more clean hydropower from the west. Promote the construction of a clean, low-carbon, safe and efficient modern energy system.

Previously, Haihong Electric, relying on its industry-leading three-dimensional wound core transformer technology research and development capabilities, manufacturing quality assurance capabilities, and comprehensive and reliable delivery capabilities, has successively won two bids for the DC back-to-back project of the Middle Channel in the Greater Bay Area and the Nanyue DC Back-to-back Project in the Greater Bay Area. Included in the key projects of the National Energy Administration's power grid main grid plan. After receiving the notice of winning the bid, both Guangzhou Power Supply Bureau and Dongguan Power Supply Bureau put forward the requirements of tight schedule, heavy tasks and high standards for project implementation. Complete the product design plan in the shortest time and schedule production after confirmation by the designer. The production planning department hastened to arrange production according to the delivery time required by customers. Although affected by this year's epidemic situation and power cuts, material procurement and production rhythm were disturbed, with the efforts of various departments, everyone overcame difficulties and did everything possible to ensure production tasks. The company's leaders and technical personnel also closely follow up the production line to guide the production every day. The quality inspection personnel do a good job in process quality control to ensure that nothing goes wrong, and actively cooperate with Party A's representative to visit the factory for supervision and factory test witness work。

In terms of product transportation and handling, the relevant departments of Haihong have made careful design and arrangements. The 3150kVA energy-saving and environmentally friendly three-dimensional wound core dry-type transformer sent to the South Channel Project of Dongguan Power Supply Bureau adopts an integrated protective shell with small overall size and low height. , Light in weight, can be hoisted as a whole, no need to disassemble the shell, and realize the protection of dry change during loading, unloading and installation.

In order to reduce the workload of on-site assembly and save time, the first 20MVA high-efficiency energy-saving three-dimensional wound core oil-immersed power transformer of China Southern Power Grid adopts the overall delivery method, and arranges special personnel to survey the entry route before the product is shipped, eliminating the need for overhead height restrictions along the way. Impact.

In order to ensure the smooth commissioning of the exchange field, after the products arrived at the site, both the Middle Channel Project Department of Guangzhou Power Supply Bureau and the South Channel Project Department of Dongguan Power Supply Bureau organized the construction units to complete the construction and acceptance of the exchange field within a very limited time. All acceptance requirements are taken seriously, and the after-sales service guarantee work is actively done in accordance with the regulations. The product quality and service cooperation have been highly recognized by Guangzhou Power Supply Bureau and Dongguan Power Supply Bureau.

The DC back-to-back Guangzhou project of Guangdong Power Grid is the first time in the world that multiple DC feed-in load centers are interconnected through flexible back-to-back. The DC back-to-back Dongguan project of Guangdong Power Grid adopts the flexible DC transformer with the largest single-phase capacity in the world, and has created dozens of world-leading technologies. Haihong Electric Co., Ltd. has the world's leading three-dimensional wound core transformer technology, and strives for the national high-quality project gold award through strong alliances in super projects such as DC back-to-back in the Greater Bay Area. At the same time, it also provides power security guarantee for the high-quality development of the Guangdong-Hong Kong-Macao Greater Bay Area, promotes the transformation of the Greater Bay Area power grid to a more intelligent, efficient, reliable, and green direction, and fully serves the realization of the goal of "carbon peaking and carbon neutrality"!