Jinling substation energy storage station

What is the power supply capacity of Changxing substations?

The substations in Changxing are powered by six transmission lines and the power supply capacity is limited by current-carrying capacity of the cable. In the summer of 2019, the peak load is 903 MW, approaching the transmission power limit of 1,000 MW.

What is the POWER instruction and SOC of energy storage station?

In the energy storage station, Group 1 and Group 2 take the constant charging power instruction of 5 MW for 42 min. The initial unit SOC values are the same in two groups. State prioritized PAS is used in Group 1 and averaged PAS is used in Group 2. Figure 7 shows the power instruction and SOC of the units in Group 1.

Does Zhicheng energy storage station participate in frequency regulation?

Zhicheng energy storage station also participates in frequency regulation to provide frequency support for Zhejiang Provincial Power Grid. Secondary frequency regulation realizes the frequency adjustment through automatic generation control (AGC) [ 25 ].

What is Zhicheng energy storage station?

In 2020, Zhicheng energy storage station is put into operation to relieve the power shortage of summer peak in Changxing, which is the first lead-carbon BESS for grid applications in China. Zhicheng energy storage station has the characteristics of large capacity, high safety and high cost-efficiency ratio for operation and maintenance.

What is the application of energy storage in power grid frequency regulation services?

The application of energy storage in power grid frequency regulation services is close to commercial operation . In recent years, electrochemical energy storage has developed quickly and its scale has grown rapidly , . Battery energy storage is widely used in power generation, transmission, distribution and utilization of power system .

How many battery clusters are there in Zhicheng energy storage station?

In Zhicheng energy storage station, a battery unit is made up of 14 battery clusters in parallel and a cluster consists of 60 battery packs in series. Due to the pack-cluster-unit structure of battery, the BMS of Zhicheng energy storage station follows the typical BMS design with three hierarchical layers as shown in Figure 3.