Main function of NLDC is

Question

Examoogle · Accepted Answer

Supervision over all RLDC

Explanation: The National Load Despatch Centre (NLDC) is the apex body mandated under the Electricity Act 2003 to ensure integrated operation of the power system in India. Its primary function is to supervise the Regional Load Despatch Centres (RLDCs) to ensure grid stability and reliability at the national level.

Working Principle: NLDC acts as the strategic coordinator between Regional Load Despatch Centres (RLDCs). It manages the national grid by monitoring inter-regional power flows, managing national transmission constraints, and facilitating energy accounting/billing through the POSOCO (now GRID-INDIA) framework. It does not formulate grid codes or power policies directly, which are the domains of the CERC and Ministry of Power, respectively.

Key Formulas: $f = \frac{1}{2\pi\sqrt{LC}}$ — Fundamental relationship for grid frequency control; $P_{flow} = \frac{V_1 V_2}{X} \sin(\delta)$ — Power flow equation monitored by NLDC

Key Points: NLDC is the apex body for integrated operation of the national power grid.; Functions include scheduling of inter-regional power transfers and monitoring real-time grid parameters.; Operates under the administrative control of GRID-INDIA (formerly POSOCO).; Works in coordination with Regional Load Despatch Centres (RLDCs) and State Load Despatch Centres (SLDCs).

Advantages: Enhanced national grid security and stability; Optimized inter-regional power transmission

Disadvantages: High dependence on communication infrastructure; Complex coordination requirements across diverse states

Applications: Real-time grid frequency monitoring; Inter-regional energy scheduling and accounting

Additional Info: NLDC was established under Section 26 of the Electricity Act 2003.. Policy formulation is the responsibility of the Ministry of Power, and Grid Code preparation is governed by CERC regulations.

Answer: C is correct — The main statutory function of the NLDC is to exercise supervision and control over all Regional Load Despatch Centres (RLDCs) to ensure the integrated, secure, and efficient operation of the national power system.

Exam Tip: Always remember that NLDC 'supervises/coordinates' (operational function) rather than 'legislates/defines' (policy/coding function) to distinguish it from CERC/Ministry roles.

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