Govt has planned 17 new islanding schemes for major cities

• The CEA said that they have advised all the SLDCs to set up a separate display of Islanding Scheme on SCADA for real-time monitoring of participating generators and critical load
• Delhi SLDC has taken the lead and has prepared SCADA display page for generators and frequency-wise load relief detail

New Delhi: The Ministry of Power said on Friday that 17 new Islanding schemes have been planned for major cities besides 26 already existing/under implementation schemes. The news comes a day after Power Secretary Alok Kumar reviewed all the existing and planned Islanding Schemes in the Indian power system on August 19 with the Central Electricity Authority (CEA), all five Regional Power Committees (RPCs), PGCIL and POSOCO. An official statement released by the ministry said, "As informed by CEA, 17 numbers of new Islanding schemes have been planned for the major cities besides already 26 existing/under implementation scheme."

Separate display for Islanding Scheme on SCADA

The CEA said that they have advised all the SLDCs to set up a separate display of Islanding Scheme on SCADA for real-time monitoring of participating generators and critical load. The same display would also be available at respective RLDCs/SLDCs/Sub-SLDCs. This will help in real-time monitoring of load generation balance of such electrical Islands which is the essence of successful Islanding.

In this direction, Delhi SLDC has taken the lead and has prepared SCADA display page for generators and frequency-wise load relief detail. This will be replicated for all the Islanding schemes in the country. These islanding schemes would ensure maintenance of essential services and also faster restoration of supply to electricity consumers in the event of any outage.

Background

Resilience of the electricity grid is very important, particularly in restoration of supply in the event of a major power outage. Islanding Scheme is a defence mechanism for the power system in which a part of the system is islanded from a disturbed grid so that this subpart could survive in isolation from the rest of the grid and continuity of supply to the essential load in this area is maintained. Accordingly, the CEA was advised to ensure the functional aspect of the existing Islanding schemes and also design Islanding schemes for major cities. In such electrical Islanded system, the essential loads should be identified and covered so that these loads continue to be served even during any major outage.

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