IRCON International Limited, a Government of India Undertaking of Ministry of Railways, has invited online bid in Two Packet system on prescribed forms from bonafide firms/companies having requisite experience and financial capacity for execution of the work detailed given below.
- Tender Reference Number: NCRTC 5037 APF OT 55
- Name of Work: Design,Detail Engineering, Supply, Testing and Commissioning of IGBT based Active Power Filter(APF) system at 33 kV Voltage level along with converter duty coupling transformers & all other associated equipment’s including integration with existing protection and SCADA system at Receiving Sub-stations (RSS) of Delhi – Ghaziabad – Meerut RRTS Corridor of NCRTC”
- Estimated Cost of Work: INR 7,75,00,000/-
- Completion Date/Period: 03 Months from LOA
- Document Download / Sale Start Date: 16-Feb-2022
- Document Download / Sale End Date: 02-Mar-2022
- Bid Submission Start Date: 25-Feb-2022
- Bid Submission End Date: 02-Mar-2022
- Bid Opening Date: 03-Mar-2022
Scope of Work:
- The scope of work includes but not limited to “Design, Detail Engineering, Supply, Testing and Commissioning of IGBT based Active Power Filter (APF) device at 33 kV Voltage level along with converter duty coupling transformers & all other associated equipment’s including integration with existing protection and SCADA system at Receiving Sub-stations (RSS) of Delhi – Ghaziabad – Meerut RRTS Corridor of NCRTC as per BOQ and details mentioned in the brief Particular Specifications enclosed at Annexure-A. Complete packing, loading, transportation and unloading to the work Site / RSS shall be in the scope of the contractor. All the Equipment and accessories offered shall be in full technical conformity with the brief Particular Specifications enclosed at Annexure-A.
- The capacity of APF to be installed at the RSS of NCRTC under Minimum loading – 20% of maximum auxiliary station running load are given hereunder:
|S. No||Substation Name||Minimum Lead/Lag MVAR compensation required at each RSS|
|1||Sarai Kale Khan RSS||2.42|
|3||Murad Nagar RSS||6.40|
|4||Shatabdi Nagar RSS||2.97|
- Active power filter (APF) compensator is specially designed to provide precise reactive power compensation in all RSS/TSS/AMS. The APF shall be able to perform both lagging and leading reactive power compensation dynamically based on CT & PT feedback from main RSS incoming supply side i.e. 220kV or 66kV.
- APF panels need to be installed in all RSS through 33kV/415V step-down transformers. The CTs & PT feedback should be taken from both main incomers at each RSS during the normal running conditions. The APF shall be provided with proper onboard protection scheme. APF should be capable of communicating with NCRTC SCADA system using IEC 61850 protocol.
- The APF shall be smart to adjust capacity as per user selected MODES. Mode selection shall be done by both SCADA and HMI interface with password protection.
- APF architecture shall be designed in such a way that Leading/Lagging power factor compensation shall also be possible through SCADA mode based upon the mode selection.
- The offered APF shall be capable of operating in normal as well as in abnormal conditions (i.e. failure of any adjacent RSS). In such cases the capacity of APF installed at the failed RSS must be utilized, provided the 33kV power is available to the failed RSS. There are scenarios in MRTS/RRTS system when the 220kV main supply fails, 33kV power is being fed to the failed receiving substations through network of 33kV ring cables for energization of 33kV bus & feeding the station auxiliaries of failed RSS.
- Accordingly, the 33kV power will remain available on 33kV bus for operation of APF even when the 220kV power of the RSS got failed. For operation of APF where the feedback is not available (during failure of power supply), all APF supplier has to include at each RSS one central server unit, which is monitoring the overall PF and KVAR demand of the particular RSS. Totally these 5 RSSs will have 5 servers.
- This server unit should have the capability to communicate to other server units which are installed at other RSS locations (may have several Kms away) in the same network. In case of failure of any \ RSS, the particular server unit installed at failed RSS should have the capability to communicate with the adjacent RSS (which is feeding the 33kV supply to failed RSS or feeding the load of failed RSS) for the lagging or leading reactive power requirement using the established communication network and accordingly share the enhanced reactive load of the adjacent RSS (which is feeding the 33kV supply to failed RSS or feeding the load of failed RSS).
- The server units should have the capability to make use of the existing SCADA network already present to communicate with other RSS server units. In the event of change in mode of operation (failure of one RSS), the main Central monitoring unit (CMU/ OCC), should inform the particular server unit through digital signal that the RSS has failed and which neighbouring RSS which will be feeding power to failed RSS.
- Based on the information received from CMU /OCC the respective server unit should the fetch the remote feedback reference from particular server unit, which is feeding the power in emergency case and continue to provide dynamic reactive power compensation to maintain PF above 0.98 to unity so that all the APF unit installed at 05 RSS to be utilized even in case of failure of adjacent RSS. APF supplier shall be required to interface with the SCADA contractor for the required SCADA signals.
- Converter duty transformer of the applicable capacity shall be in the scope of the contractor. Further all equipment’s from Converter duty transformer to APF including Air Circuit Breaker, Busduct etc. shall be in scope of the contractor. Capacity of Converter duty type coupling transformer (Outdoor Oil type) shall be selected in such a way that at least 20% capacity of the coupling transformer shall be available for future expansion of APF. The voltage rating of coupling transformer shall be 33/0.690 kV or 33/0.415kV depending upon the design of APF manufacturer/Contractor.
- 01 No. 33kV Switchgear (GIS type) feeder and 33kV cable at each RSS shall be provided by IRCON for connection of 33/0.415kV or 33/0.690kV Converter duty transformer. Overcurrent & Earth fault Protection shall be provided by IRCON in the 33kV GIS bay. Any additional protection required shall be provided by the Contractor.
- Contractor in their technical proposal shall submit the tentative size of the room required for installation of APF for each RSS.
- Factory Inspection of all Material before dispatch.
- Supervision at site during Installation, Testing & Commissioning.
- Training to authorized personnel of GC/NCRTC/IRCON.
- Interface with the SCADA contractor for implementation of operation philosophy for the case of failure of adjacent RSS.
Website https://www.etenders.gov.in/eprocure/app may be referred for detailed terms and conditions of the bidding documents, which is available online.
About IRCON International Limited:
- IRCON International Limited (IRCON), a Schedule “A” & Mini Ratna-I Central Public Sector Undertaking (CPSU), incorporated by the Ministry of Railways, Central government, under the Companies Act, 1956 on 28th April 1976 originally under the name Indian Railway Construction Company Limited.
- IRCON is an integrated engineering and construction company in India operating since last 44 years with specialization in major turnkey infrastructure projects, including Railways, Roads, Highways, Bridges, Flyovers, Tunnels, Aircraft maintenance hangars, Runways, EHV sub-stations, Metro & MRT, and others.
Source: IRCON-Tender | Image Credit (representational): NCRTC