NDLI: A new control system for automatic parallel operation of load-ratio-control transformers

Content Provider	IEEE Xplore Digital Library
Author	Minneci, S. Farnham, S. B.
Copyright Year	1931
Abstract	The successful parallel operation of transformers equipped with automatic load-ratio control and line-drop compensation requires that stability of operation be insured. In addition, experience has shown that it is frequently highly desirable that other automatic features be included which will contribute toward operating flexibility, and which will permit switching transformers in and out of parallel operation without disturbing the voltage level at the load center or causing an excessive initial circulating current at the instant of paralleling. This paper discusses the conditions which make these added features desirable, and presents a new control system whereby they all may readily be secured. In this new system, load current and circulating current are made to flow in separate paths in the control circuit, and each produce their effects independently, thereby insuring stable operation and maintaining the desired load-center voltage level. This separation of the load and circulating current, in conjunction with a modification in the closing circuit of the paralleling circuit breaker, also makes possible the avoidance of excessive initial circulating current when the breaker is closed. The simplicity and effectiveness of this arrangement in providing a fully automatic means for meeting all the anticipated operating requirements recommends its use in many applications.
Starting Page	488
Ending Page	493
Page Count	6
File Size	1155174
File Format	PDF
ISSN	00959197
Volume Number	62
Issue Number	7
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1943-07-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current transformers Voltage transformers Relays Circuit breakers Substations Voltage control
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A New Control System for Automatic Parallel Operation of Load-Ratio-Control Transformers

A new control system for automatic parallel operation of load-ratio-control transformers

Standardized load-center unit substations for low-voltage A-C systems

Philosophy of relaying

A New Control System for Automatic Parallel Operation of Load-Ratio-Control Transformers

Loop control schemes increase restoration

Non-conventional current transformers on live tank circuit breakers

Automatic control of substations

Line-Drop Compensator Settings for Automatic Parallel Operation of Load-Tap-Changing Transformers

A new control system for automatic parallel operation of load-ratio-control transformers

Similar Documents

A New Control System for Automatic Parallel Operation of Load-Ratio-Control Transformers

A new control system for automatic parallel operation of load-ratio-control transformers

Standardized load-center unit substations for low-voltage A-C systems

Philosophy of relaying

A New Control System for Automatic Parallel Operation of Load-Ratio-Control Transformers

Loop control schemes increase restoration

Non-conventional current transformers on live tank circuit breakers

Automatic control of substations

Line-Drop Compensator Settings for Automatic Parallel Operation of Load-Tap-Changing Transformers

A new control system for automatic parallel operation of load-ratio-control transformers