Why does Korean power system plan to provide Bess?

Due to the wide range of BESS capabilities as mentioned above, Korean power system plans to provision BESS to relieve generation curtailment and to provide FR service in the short-term applications, and to maintain frequency stability by providing FFR service in a low-inertia system for the long-term applications.

How to overcome stability issues in Korea's power system?

Besides, considering the short-term state of the Korean power system, another stability issue may arise due to the delayed reinforcement of the shared network connecting large-scaled generation plants. Several countermeasures such as generator tripping and generation curtailment are proposed to overcome stability issues.

Will KEPCO build a new battery energy storage system?

KEPCO delivered the project in line with the 9th Basic Electricity Supply and Demand Plan, which aims for a 40% share of renewable energy in Korea’s electricity mix by 2034. The Korean utility has laid down plans to build another 300 MW battery energy storage system, which it plans to deliver by 2028.

What happened to Korea's battery storage market?

ET News said it marked the utility’s first bulk procurement of battery storage in five years since the Korean market was put on pause by a series of fires at mostly commercial and industrial (C&I) facilities during 2017-2018.

When is a Bess allowed to operate if a power system exceeds FDB?

As previously mentioned, the BESS is allowed to operate if the power system exceeds a certain level of frequency. Instead, if the system operation is within the range of frequency dead band (∆ fdb), the SOC of BESS will be managed to be close to the desired SOC setpoint.

Why is Bess a good choice for power systems with low inertia?

Moreover, with a proper control strategy, BESS is also able to provide a fast frequency response (FFR) service needed by power systems with low inertia , , . This purpose is later addressed for solving the long-term stability issues in the Korean power system.