Energy storage has a wide range of applications in various application scenarios of power systems and has been verified in engineering examples. The role of energy storage in the power generation side is mainly to improve economic and social benefits.
Energy storage can adjust the output reactive power and then adjust the voltage of the entire line to dynamically compensate the power grid [28, 29]. The energy storage system is installed upstream of the blocked line. Store the energy that cannot be transported by the line in the energy storage device when the line load exceeds the line capacity.
The energy storage is installed downstream of the power transmission and distribution equipment that originally needs to be upgraded to delay or avoid capacity expansion. The energy storage equipment in the substation can be used as a backup power supply to directly supply power to the DC load .
It also introduces the application scenarios of energy storage on the power generation side, transmission and distribution side, user side and microgrid of the power system in detail. Section 3 introduces six business models of energy storage in China and analyzes their practical applications.
The context of the energy storage industry in China is shown in Fig. 1. Fig. 1. The context of the energy storage industry in China [, , ]. As can be seen from Fig. 1, energy storage has achieved a transformation from scientific research to large-scale application within 20 years.
Reactive power support refers to regulating the voltage on the lines by injecting reactive power. Energy storage can adjust the output reactive power and then adjust the voltage of the entire line to dynamically compensate the power grid [28, 29]. The energy storage system is installed upstream of the blocked line.
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III. Requirements for Limited
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