Both Resiliency and self-healing are the two basic components of a smart grid. In this article, we will discuss the concept of resilience and self-healing in smart grid, their definition, and basic working steps. So let’s begin with the definition of resilient in the smart grid.
What is Resilient in Smart Grid?
Resiliency is a
feature of the smart grid, and it may be defined as under-
The ability of the
smart grid to resist failure and rapidly recover from breakdown or fault
occurred is referred to as resiliency
of the smart grid.
At present due to increasing power demand, the reliability
of the electric grid system is decreasing day by day. Consequently, our typical
power systems becoming prone to outages and blackouts. Hence, in order to avoid
such losses and to increase the reliability of the power system, the idea of the
smart grid is being used.
Smart grids work on digital platforms for fast and reliable
sensing, communication, control, and protection of the entire transmission and
distribution system. A resilient electric grid is a more reliable grid.
Working of a Resilient Smart Grid
A resilient smart grid follows three basic steps in its
working mechanism after receiving any kind of disruptive fault to the system.
These three steps are as follows:
- The resilient grid gives the ability to prevent initial failure or reduce its magnitude.
- The resilient grid provides a high degree to which the system can absorb the impact of the initial failure of the system.
- A resilient grid provides the ability to the system to be easily repaired.
Based on these three working guidelines, electric grids
involve various technologies such as electric vehicles, distributed generation,
etc.
What is Self-Healing in Smart Grid?
The property of a
smart grid that enables a power system to know that it is not operating
correctly and without human intervention, the system makes necessary
adjustments to restore itself to normal operating conditions is referred to as
the self-healing property of the
smart grid.
The self-healing property of the smart grid is almost
similar to the self-healing action of cells and tissues in a human body on
receiving any injury.
Smart grid uses sensors and smart meters for receiving data
to make decisions. It regularly monitors the working status of the system. When
any fault is detected in the system, the system automatically tries to reduce
it or remove the faulty part. Then, it performs a maintenance job to check
overall operation along with the removal of the fault to zero level.
This complete process of pre-fault, during-fault, and post-fault
is performed automatically by the system itself without any human intervention.
For this reason, it is known as the self-healing
or automatic troubleshooting
facility of the smart grid.
Working Steps of Self-Healing of Smart Grid
The following are the basic working steps of self-healing in
a smart grid:
- Self-healing smart grid uses real-time security monitoring and reaction mechanism that allows the system to constantly check itself automatically to an optimal state.
- A self-healing smart grid has functionality that enables the system to automatically look for problem areas that can cause large disturbances in the system.
- Self-healing in a smart grid provides rapid isolation that allows the system to isolate those parts of the system that experience failure from the rest of the system. It is essential to avoid a further loss to the existing working system.
Therefore, a smart grid system uses sensors, embedded
systems, and digital communication which enables the modern grid to become
observable, controllable, automated, and fully integrated.
Related Articles
- Principle and Need of Self-Healing in Smart Grid
- Elements and Technologies of Smart Grid System
- Functions and Characteristics of Smart Grids
- What is Smart Grid? - Definition, Needs and Benefits
.png)
