en.Wedoany.com Reported - Shenzhen Yichu Digital Intelligence Energy Group Co., Ltd. (referred to as "Yichu Digital Intelligence") has achieved full-capacity one-time grid connection for its 200MW/400MWh electrochemical energy storage station in Huidong, Huizhou, Guangdong. This project is a key new energy project in Huidong County and a demonstration project for new energy storage in Huizhou City. It will participate in regional grid peak shaving, frequency regulation, new energy consumption, and emergency supply services.

Approaching the grid connection, Yichu Digital Intelligence Vice President Shi Lei oversaw operations on-site, leading the project team to complete condition verification and safety hazard inspections of core facilities such as the step-up station, power conversion system, and battery clusters, while coordinating with the grid dispatch center. At 4:00 AM on the 27th, following operations including external line surge, main transformer surge, and box-type transformer surge, the station successfully connected to the grid.

The Huidong energy storage station is located within Baipenzhu Town and Duozhu Town in Huidong County, covering approximately 32 mu (about 2.13 hectares). It connects to the nearby 220kV Chuanping Substation. With a total installed capacity of 200MW and a configured capacity of 400MWh, it is the leading grid-side independent electrochemical energy storage station in the Huidong area. This is also the second energy storage station successfully connected to the grid by Yichu Digital Intelligence in Guangdong.

The station comprises four major components: the energy storage system, a 220kV energy storage step-up station, a 3.92km 220kV transmission line, and an expansion bay on the opposite side. The overall design balances safety and operational efficiency. The energy storage system uses lithium iron phosphate technology, consisting of 40 standardized 5MW/10MWh energy storage units, supported by a 240MVA dual-winding main transformer, outdoor GIS switchgear, SVG dynamic reactive power compensation devices, and other equipment.

Technically, the station adopts an integrated design of "2 21-foot battery containers + 1 29-foot PCS + step-up transformer all-in-one machine," with a single-cabin capacity of 5MWh, reducing construction time. The layout uses a "ring network parallel connection of 5 energy storage units," with 35kV side ring network integration, reducing equipment investment and cable channel occupancy. The 220kV side uses GIS switchgear, covering approximately 37% of the area of conventional equipment.

The Huidong energy storage station possesses dual technical capabilities of "grid-forming + black start," enabling active support for grid frequency and voltage stability, independent black start during grid faults, and millisecond-level response for power restoration.

Once operational, the station will participate in frequency regulation, peak shaving, voltage regulation, and reserve services for the Huizhou and Huidong regional grids, smoothing out fluctuations in new energy output and alleviating peak power supply pressure in the area.

In terms of business model, the station adopts a three-in-one operation system of "capacity leasing + electricity trading + ancillary services." It provides energy storage quota leasing services to new energy stations, participates in electricity spot and peak-valley arbitrage trading, and offers ancillary services such as frequency regulation, voltage regulation, and reserves to the grid.

From planning to grid connection, the project received full support through government-enterprise collaboration. Joint efforts established "green channels" for approval, land use, and grid connection, ensuring project progress. The construction phase adopted a "modular prefabrication + on-site rapid assembly" model, where core equipment was standardized in factories and then assembled on-site, shortening the construction period.

As part of Huizhou's effort to build a "wind-solar-nuclear-gas-storage" multi-energy complementary system, this project fills a gap in large-scale independent energy storage on the regional grid side. According to estimates, after commissioning, the station's annual peak-shaving discharge capacity can reach 140 million kWh, saving approximately 42,400 tons of standard coal and reducing CO2 emissions by about 115,200 tons annually. The annual discharge can meet the electricity needs of approximately 58,300 average households for a full year.

The grid connection of the Huidong energy storage station reflects Yichu Digital Intelligence's technical expertise and project capabilities in the energy storage field. The company will continue to advance the construction of a new power system under the direction of "empowering energy with digital intelligence, leading zero carbon with technology."

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