Electrochemical energy storage participating in auxiliary grid frequency regulation has characteristics such as fast response speed, strong short-term power throughput capacity, and flexible and accurate regulation performance. It can effectively solve thermal power units problems such as long response time lag, low unit climbing rate, difficulty in accurately tracking the frequency regulation instructions of power grid dispatching, as well as regulation delay, regulation deviation, and regulation reversal. As a high-quality power dispatch resource in Jiangsu Province, this project has been listed as one of the first batch of demonstration projects for energy storage frequency regulation, setting a benchmark for other subsequent energy storage frequency regulation projects in Jiangsu Province.
The energy management EMS system is connected to the power plant NCS system and DCS system, automatically receives real-time AGC power instructions. Combining the unit frequency regulation instructions and the energy storage system characteristics, based on an economic optimization algorithm considering factors such as frequency regulation compensation benefits, it adjusts the output of the energy storage system according to the instructions to achieve fast and high k-value joint operation.
It has a direct grid control mode to realize the independent peak shaving and frequency regulation mode of energy storage. As the power market is gradually improved, the energy storage system can independently undertake frequency regulation services and obtain benefits.
The system effectively reduces the grid frequency regulation capacity and makes full use of the rapid response characteristic of energy storage. it ensures frequency regulation requirements with low-capacity configuration. It improves the operating efficiency and service life of conventional generating units, frees the capacity of conventional units from the frequency regulation function, avoids mechanical wear and insufficient combustion caused by frequent power adjustment.
- Shanghai Electric Distributed Energy Technology Co., Ltd.
Shanghai PNS registry No. 31010102007087