MODIFICATION
59 -- Static Frequency Converter Switch Gear Fault Protection
- Notice Date
- 10/3/2018
- Notice Type
- Modification/Amendment
- NAICS
- 335313
— Switchgear and Switchboard Apparatus Manufacturing
- Contracting Office
- Department of the Interior, Bureau of Reclamation, BOR - All Offices, Denver Federal Center, Building 67, Room 380, Denver, Colorado, 80225, United States
- ZIP Code
- 80225
- Solicitation Number
- 140R6019R0001
- Archive Date
- 11/7/2018
- Point of Contact
- Gerri Voto-Braun, Phone: (406) 247-7809
- E-Mail Address
-
gvotobraun@usbr.gov
(gvotobraun@usbr.gov)
- Small Business Set-Aside
- N/A
- Description
- THIS IS NOT A SOLICITATION OR A REQUEST FOR PROPOSAL (RFP). THIS SOURCES SOUGHT ANNOUNCEMENT IS FOR ACQUISITION PLANNING PURPOSES ONLY AND SHALL NOT BE CONSTRUED AS A COMMITMENT BY THE GOVERNMENT TO ISSUE A SOLICITATION OR ULTIMATELY AWARD A CONTRACT. ANY COST INCURRED AS A RESULT OF THE ANNOUNCEMENT SHALL BE BORNE BY THE INTERESTED PARTY (PROSPECTIVE OFFEROR) AND WILL NOT BE CHARGED TO THE GOVERNMENT FOR REIMBURSEMENT. 1.0 GENERAL INFORMATION: 1.1. No formal solicitation for this work exists at this time. All qualified concerns may submit capability statements for consideration. Capability statements received will be reviewed to determine the quantity and availability of firms who have the technical level of expertise and demonstrable experience to perform the effort described below. The capability statements received will be used to determine the Bureau of Reclamation's overall procurement strategy. The Bureau of Reclamation is seeking sources with expertise and history in designing, manufacturing and installing fault protection for power plant switchgear in line with a Static Frequency Converter (SFC) or Variable Frequency Drives (VFDs) which brings up large motors up to synchronous speed from a complete stop utilizing variable frequencies from 0hz to 60hz. The Mt. Elbert Powerplant includes two large pump/generator units with the capability of starting in ‘motor' mode when the unit is pumping water. These two units share an SFC, which is used by each unit when starting in ‘motor' mode. After startup the unit is directly connected to the transmission system via a unit circuit breaker. This system is summarized in the attached Facility Sketch. The Bureau of Reclamation is requesting the information to determine the quantity and level of experience of firms performing this type of work. The acquired information will be used to develop a RFP for protection of the SFC switch gear used for each of two motor-generators in pump mode. 2.0 SFC Switch Gear Fault Protection: 2.1. Description of Existing Issue: The existing SFC Output Switch-gear circuit breakers have underrated capability for the maximum available fault current contribution from the motor for a fault located in the SFC. The problems with the capability of the SFC Output Switchgear are listed below: •Circuit Breaker 326 has a rated close and latch capability of 58,000 amps and a fault current duty of 59,315 amps. •Circuit Breaker 326 has a rated interrupting capability of 23,400 symmetrical amps and a fault current duty of 42,697 symmetrical amps. •Circuit Breakers 122 and 222 have a rated interrupting capability of 36,400 symmetrical amps and a fault current duty of 42,697 symmetrical amps. •All three circuit breakers on the SFC Output Switch-gear are not rated to be able to interrupt a high current fault during low frequency conditions that would occur during startup of a unit in ‘motor' mode when the SFC is ramping up the frequency of the unit Facility Conditions •In general the SFC takes 193 seconds to start up a unit. •Motor current during startup is 613 A at 11.5kV. In addition to the concerns summarized above it should be noted that many modern electrical protection relays are not capable of detecting faults in the frequency ranges that occur as the SFC is ramping up the frequency of the unit. The existing electrical protection relays located on the SFC Output Switchgear are older Westinghouse electro-mechanical relays. It is not know at this time that these relays would be capable of detecting a fault within this frequency range. 2.2. Protection Requirements: 2.2.1. A solution is sought to address the capability problems with the existing SFC Output Switchgear. This solution should protect the SFC from high current faults that would occur during the unit startup in motor mode, when the frequency is being ramped up. At this stage the frequency can be very low and well below the standard frequency range of a 60Hz rated circuit breaker. Capabilities: •Interrupting capability of at least 63,000 symmetrical amps during low frequency operation. •Addresses the problems with the short circuit capability of the SFC Output Switch-gear. This does not require replacement of the SFC Output Switch-gear, a solution that prevented it from experiencing those fault currents would be acceptable as well. •If the solution relies on electrical protection relays to detect a fault it must address whether or not the protection relays will operate when the frequency is below the 10 or 15 Hz frequency tracking limitation of most microprocessor multifunction motor/generator protective relays available. 2.3. Attachments: 2.3.1. The following "FOR INFORMATION ONLY" drawings: USBR Drawing No. Title NA Facility Sketch 3.0 QUALIFICATIONS: Documentation shall be provided demonstrating history and furnishing customer references. 4.0 INFORMATION REQUESTED: Responses to this notice should include the firm's full name, point of contact, mailing address, e-mail address, and telephone number. Firms are invited to demonstrate their capabilities by providing the following: a)Statement of Capability (SOC) describing capability to provide the equipment and services described above and meet the experience requirements. b)Describe salient characteristics and advantages of typical equipment that would be provided. c)Companies qualified to do business with the United States shall be registered in the System for Award Management (SAM) at SAM.gov/ and not be on the Excluded Parties List System (debarred list) at https://www.epls.gov. Responses will be compiled and shared with the advisory committee and responses to the request will not be returned. The subject line of the email shall be "Potential Sources Request for Information (RFI) for Static Frequency Converter Switch Gear Fault Protection". Interested parties having the capabilities necessary to perform the stated requirements may submit a capability statement via email to gvotobraun@usbr.gov.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/notices/9624c68295c2c092df4e10cfb03bc5ea)
- Place of Performance
- Address: Mt. Elbert Powerplant, Granite, Colorado, 81228, United States
- Zip Code: 81228
- Zip Code: 81228
- Record
- SN05114776-W 20181005/181003230850-9624c68295c2c092df4e10cfb03bc5ea (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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