Microgrid control system functional diagram

What are the components of microgrid control?

The microgrid control consists of: (a) micro source and load controllers, (b) microgrid system central controller, and (c) distribution management system. The function of microgrid control is of three sections: (a) the upstream network interface, (b) microgrid control, and (c) protection, local control.

What is the nature of microgrid?

The nature of microgrid is random and intermittent compared to regular grid. Different microgrid structures with their comparative analyses are illustrated here. Different control schemes, basic control schemes like the centralized, decentralized, and distributed control, and multilevel control schemes like the hierarchal control are discussed.

Can a microgrid operate in autonomous mode?

However, a microgrid operating in autonomous mode will only operate when voltage and frequency stabilization condition is met. To achieve the required control, a droop control or hierarchical control is employed. Subsequent sections discuss different architectures of microgrid and relevant control strategies.

What is power flow from microgrid to main grid?

When a condition of insufficient power from microgrid arises, main grid supplies power to microgrid. In case of surplus power availability from microgrid, a control provision for power flow from microgrid to main grid is required. All these controls are provided through central control unit.

What is a microgrid control system?

Without the inertia associated with electrical machines, a power system frequency can change instantaneously, thus tripping off power sources and loads and causing a blackout. Microgrid control systems (MGCSs) are used to address these fundamental problems. The primary role of an MGCS is to improve grid resiliency.

How a microgrid central controller works?

2. Management level control: A Microgrid Central Controller performs at management level and establishes a synchronism between microgrid and main grid. As an algorithm, various techniques such zero crossing method, grid voltage filtering method, or phase locked loop methods are used for obtaining point of synchronism.