Analyse Better to Operate Best

PRDC is providing services to utilities in implementing various strategic initiatives taken by the utility. The strategic initiatives may vary from converting transmission or distribution lines to underground cables within its services area, building disaster proof (flood/earthquake resilient) transmission/distribution systems or services to prepare comprehensive road map for implementation of smart grid technologies.

Our services includes detailed engineering, pre-feasibility, detailed technical feasibility, DPR (Detailed Project Report), DTS (Detailed Technical Specification) with BOQ, RFP preparation, vendor identification, tendering assistance, vendor evaluation, procurement management, project management, monitoring, quality assurance, verification and certification services. Owner’s engineering consulting and project management consulting are also offered.

We have in depth experience and executed numerous projects of undergrounding overhead lines (132 kV to 11 kV) in coastal state of Odisha in India and 500 kV in Indonesia that involves using of submarine cables. Also, provided services to prepare DPR for disaster proof transmission system in Berhampur & Chatrapur command area.

A detailed study was entrusted by an Indian utility to build flood/cyclone resilient (Phailin cyclone) power distribution system.

Some of major and significant projects of PRDC in this are:

  • Under Ground (UG) Cabling System With SCADA (Puri & Konark and surrounding areas) in Odisha-India
  • System study and DPR preparation on Cyclone and flood resilient Power Distribution network in Phailin cyclone affected areas in Odhisa.
  • SCRIPS- State Capital Region Improvement of power System Project (132kV, 33kV, 11kV, & LT Under Ground Cabling System), HT OH line strengthening by HTLS in Bhubaneswar & Cuttack
  • Construction of 33kV Underground cabling from 132/33kV Ransinghpur OPTCL Grid Substation to IOCL Depot at Jatani, Odisha
  • UG cabling project in the part of Bhubaneswar City Rathadanda
  • Construction Of 33kV Line & UG Cable For AIIMS, BBSR
  • Construction Of 33kV Line & UG Cable For Ayakar Bhawan,Cuttack
  • Preparation of DPR for creating Ring System network in RRCP scheme among all the 33/11KV s/s under CESU

PRDC was engaged by MSETCL in India for carrying out a detailed study in creating a road map for implementation of Smart grid technologies.

We have also rendered our consultancy services to many distribution utilities in India to prepare roadmap to align them with the government schemes.

A failure in the power system equipment may cause interruption in system operation and sometimes may incur huge capital loss to owner. A frequent failure of network equipment generally necessitates a detailed and timely failure analysis study to avoid any further inconvenience in terms of capital loss and system operation.

We undertake assignments involving failure analysis of power system equipment to ascertain the causes of failures and to suggest remedial measures to avoid such failures in future. Based upon the kind of failures in the system historical data analysis, site measurement activities and necessary power system studies are undertaken to arrive at root cause of failures and correspondingly, mitigation techniques, which is practical and cost effective, are recommended.

Energy audit is defined as “The strategy of adjusting and optimizing energy, using systems and procedures so as to reduce energy requirements per unit of output while holding constant or reducing total costs of producing the output from these systems”.

The Energy Audit would give a positive orientation to the energy cost reduction, preventive maintenance and quality control programmes which are vital for production and utility activities. Such an audit programme will help to keep focus on variations which occur in the energy costs, availability and reliability of supply of energy, decide on appropriate –

energy mix, identify energy conservation technologies, retrofit for energy conservation equipment etc. In general, Energy Audit is the translation of conservation ideas into realities, by lending technically feasible solutions with economic and other organizational considerations within a specified time frame.

At PRDC® , we conduct the audit for electrical systems for industries and utilities. These audits fall in three different categories depending on the degree of conducting the same viz Type-I, Type-II and type-III audits, with typeI being the simplest form and Type-III being a more exhaustive one.

The technical due diligence would be conducted when the power system of interest is already planned or under construction or operational and some investor wants to verify the design parameters of the power system considered by the project developer before making any investment. PRDC® typically carries out the technical due diligence of the conventional power generation plants, renewable energy generations like wind and solar in the aspects of their grid connectivity and capability, reliability of power evacuation schemes.

Generally it includes load flow, contingency analysis, short circuit and transient stability studies.

It covers evaluation of evacuation system planned by the developer, fault levels in the vicinity of plant, stability of the system and reliability of power evacuation. Analysis gives clarity to the investors about the capability of power evacuation and also about the timeline of implementation of various proposed transmission systems to take appropriate decisions about investment by evaluating the risk involved. Also in certain cases study covers the availability of associated substations and transmission systems in the past and its implication on power evacuation and possibilities improvements in these parameters with the system strengthening schemes planned by the transmission utilities in the near future.

Earthing or grounding of electrical installations plays an important role as regards the behavior of the power system and personnel safety. The purpose of earthing electrical installations is protection of the installation, improvement in the quality of service and safety of personnel. These general aims by no means determine the methods to be used and widely different techniques can lead to the same average degree of protection.

Earthing problems are often of a very complex nature due to a variety of reasons; the ground is a poor conductor; it is not homogeneous and has characteristics of which little knowledge is available; personnel safety introduces questions of the probability of contacts with the live conductors. Besides, installing good earthing systems often involves money, especially under poor ground conditions.

PRDC® offers specialized end-to-end solutions in earthing, namely, field investigation of soil characteristics, computer-aided design of HV and EHV substations (both air insulated and gas insulated) & power stations and field testing of earthing system designs. Soil resistivity and earth resistance measurements are undertaken using standard Earth Testers in accordance with the procedures laid down in Indian (IS 3043) and international standards (IEEE Std.81).

Economic design of earthing systems is carried out as per IEEE Std. 80 using GGRID software module in MiPower® with provisions for achieving optimal grid conductor spacing, depth of burial, safe step and touch voltages. Non-linear soil model based on actual field measurements is a distinct feature of GGRID software. PRDC® also undertakes earthing system audit and adequacy tests on grounding systems that are due for renovation and modernization. In the area of lightning protection, PRDC® undertakes design and review of existing lightning protection schemes for substations and buildings/structures in accordance with the provisions of IEC Std.