Controlling System Operations of Power Transmission

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Hiralal Samariya
Chairman & Managing Director, APTRANSCO

The Indian power sector has the third largest transmission network in the world. APTRANSCO is the second largest T&D network in the country

Improving network performance is the key priority of APTRANSCO. Post reforms transmission losses have reduced from 9 percent to 4.22  percent during 2011-12 and the lowest amongst state utilities in the country. Transmission losses during 2012-13 up to July 2012 is 4.02  percent. Transmission system availability (99.89 percent) in Andhra Pradsh is the highest among trans- mission utilities in the country. The  failure rate of Power Transformers is 1.53 percent. This has been achieved by continuous monitoring of power transformers. APTRANSCO is  sing latest technologies like Multi Circuit Towers, INVAR Conductor, Monopole, Gas Insulated Substations and UG Cables to increase  he transmission capability. APTRANSCO is currently responsible for strengthening, expanding and controlling the state’s transmission  infrastructure at voltage levels of 132 kV and above. It also handles load dispatching operations.

Honours and awards
In recognition of excellent performance, Central Electricity Authority (CEA), Ministry of Power (MoP), New Delhi, has conferred on APTRANSCO the award of “Gold Shield for the year 2010-11” in the category of “Early Completion of Transmission Projects” for the fastest completion of Transmission project of 400 KV Double Circuit (DC) line from Kothagudem Thermal Power Station (Stage-VI) to Khammam Substation in a record time of 17 months as against the CEA norm of 24 months.CEA has hailed APTRANSCO as one of the best power utilities in the Country. APTRANSCO was chosen for excellence in “Cost Management Award” by a Jury headed by Justice S. Varma, Former Chief Justice of Hon’ble Supreme Court for achieving various economic and efficiency measures. APTRANSCO adjudged as the Joint winner of prestigious “5th Enertia Award under Best Performance Utility – State Category” for its continuous excellence in the areas of loss reduction and transmission system availability. APTRANSCO awarded “National Vigilance Excellence Award” for the year 2011 at all India level among various banks, PSUs and other ministries for vigilance activity under preventive vigilance by the Vigilance Commissioner, Central Vigilance Commission.

IT initiatives
Various IT initiatives have been taken up to improve the performance and bring in transparency and accountability. These include CAT (Consumer Analysis Tool), MATS (Monitoring and Tracking System), TIMS (Transformer Information Management System), PMRS (Performance Monitoring and Reporting System), Book consolidation Module and Remote Meter Reading (RMR) Enterprise Resource Planning (ERP). e-Vaaradhi, an electronic way to reach electricity consumers for passing the messages relating to billing information, power shutdown information, etc. through SMS is introduced.

The Department is in the process of having charters and service standards for all the services rendered at all levels. APTRANSCO has also adopted many technologies for minimising losses in the transmission system. These include:

• Erection of Reactors at 400 KV Substation
• Reduction in the length of the transmission line
• Conducting Study Flow wherever the power factor is less than 0.95 and erecting Capacitor Banks at the Substation to improve the power factor
• Conducting Energy Auditing regularly to reduce losses like replacing struck meters, curbing theft of energy, requesting discoms to install Capacitor Banks
• Strengthening the transmission system.

Policies adopted by Andhra Pradesh Government to make the state self-sufficient in electricity

• Additional power is tied up and flowing in to the grid.
• Power is being purchased through power exchanges as and when available at a reasonable rate.
• Synchronisation to private power plants are given immediately to add additional capacity to the grid.
• Government of India has been requested to consider the allocation of additional power till end of May 2013 to meet the present critical
power crisis.
• Government of India has been requested to arrange additional natural gas of 4.5 MMSCMD, so that gas plants can operate at least 75 percent PLF as decided by EGoM.
• Government of India has been requested to allocate power from unallocated share of Central Generating Stations of Southern Region upto 500 MW. Against this, Ministry of Power, Government of India allocated 100 MW of power from Central Generating Stations of Eastern Region from 30.07.2012 to 31.10.2012.
• Government of India has been requested to allocate power from unallocated Power of 300 MW from the Kundankulam Atomic Power
Plant and 75 MW from 2nd expansion of Neyveli Lignite Corporation of firm basis to Andhra Pradesh.
• AP discoms are not in a position to purchase any quantum of power other than already tied up due to severe transmission corridor constraint between NEW (North, East, West) Grid and Southern Grid. PGCIL was requested to expedite the laying of transmission corridor and to get the lines completed by the end of 2013.
• Government of India has been requested to ensure that firm coal supply should be maintained to all units of Simhadri as per Fuel Supply Agreement to operate at 100 percent PLF.
• NTPC has been requested to start generation of Simhadri 4th unit at the earliest so that another 210 MW power can be supplied to Andhra Pradesh as per obligations.
• Ministry of New and Renewable Energy (MNRE) has proposed to fund 40 percent of the expenditure to be borne for creating transmission, evacuation   network for wind and solar energy. In this connection proposals were already submitted for transmission and evacuation scheme of 3,150 MW of power costing about `1,830 crore out of which 40 percent amount i.e. `732 crore is to be released by MNRE.

e-Governance system
e-Governance system links development goals, policies, priorities, plans, programmes, projects, budgets, action plans and performance  owards achieving the desired objectives. The system involves performance indicators, performance monitoring, performance measurement, performance-based evaluation, performance-based review and evidence-based policy-making. Performance monitoring is a continuous process of collecting and analysing data to compare how well a project, programme or policy is being implemented with reference to expected results.APTRANSCO has implemented an efficient e-Procurement System, which connects buyers and suppliers through electronic exchange of tenders, catalogues, contracts, POs, invoices, etc. Through e-Procurement, APTRANSCO can include on-contract and off-contract buying. It can also include a variety of techniques such as RFPs, quotes, auctions and reverse auctions. Notification of tenders can be received, bids can be submitted online and the status of the different bids can be tracked seamlessly.

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