US3832533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
On-line hybrid computer arrangements having universal interfacing capability for electric power system studies
Assignee: Westinghouse Electric Corp
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Filing: 1972-05-19
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Granted: 1974-08-27
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Expires: 1992-05-19
Abstract
Abstract Hybrid computer arrangements for electric power system simulation and study include a modularized analog network simulator and a digital computer which may be interfaced through a data link to a remote digital computer for transmission of electric power system network variables. The electric power system is modulated by the analog simulator which includes modular circuits representative of power system components. With use of the input data to the digital computer, the computer and analog simulator are capable of operating to generate loadflow solutions and perform transient stability studies.
Inventors
- 👤 N Carlson
- 👤 U Ronnen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/62; G06G7/63; G06J; G06J1/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
102 words
A hybrid loadflow computer arrangement comprising a D.C. analog simulator of an A.C. network, said simulator including a plurality of bus, generator, load and line D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of predetermined network variables to said computer, said computer including means for generating signals representative of said on-line input data to said bus generator, load and line D.C. circuits, and said computer and said simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data.
Claim 2
Dependent Claim
102 words
A hybrid loadflow computer arrangement comprising a D.C. analog simulator of an A.C. network, said simulator including a plurality of bus, generator, load and line D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of predetermined network variables to said computer, said computer including means for generating signals representative of said on-line input data to said bus generator, load and line D.C. circuits, and said computer and said simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data.
Claim 3
Dependent Claim
34 words
A hybrid loadflow computer arrangement as set forth in claim 1 wherein said remote digital computer is a relatively large digital computer and the first mentioned digital computer is a relatively small digital computer.
Claim 4
Dependent Claim
141 words
A hybrid loadflow computer arrangement with transient stability analysis capability comprising a D.C. analog simulator of an A.C. network, said simulator including a plurality of D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of predetermined network variables to said computer, said computer including means for generating signals representative of said on-line data to said simulator, said computer and said analog simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data, said computer including means for imposing one or more transient faults on said analog simulator D.C. circuits after a loadflow solution has been reached, and said computer including means for monitoring said simulator to determine transient network responses and network stability resulting from the imposed faults.
Claim 5
Dependent Claim
141 words
A hybrid loadflow computer arrangement with transient stability analysis capability comprising a D.C. analog simulator of an A.C. network, said simulator including a plurality of D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of predetermined network variables to said computer, said computer including means for generating signals representative of said on-line data to said simulator, said computer and said analog simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data, said computer including means for imposing one or more transient faults on said analog simulator D.C. circuits after a loadflow solution has been reached, and said computer including means for monitoring said simulator to determine transient network responses and network stability resulting from the imposed faults.
Claim 6
Dependent Claim
34 words
A hybrid arrangement as set forth in claim 3 wherein said D.C. analog simulator comprises a plurality of bus, generator, load, line and tie line D.C. circuits interconnected to correspond to said A.C. network.
Claim 7
Dependent Claim
34 words
A hybrid loadflow computer arrangement as set forth in claim 3 wherein said remote digital computer is a relatively large digital computer and the first mentioned digital computer is a relatively small digital computer.
Claim 8
Dependent Claim
193 words
A hybrid loadflow computer arrangement with transient stability analysis capability comprising a D.C. analog simulator of an A.C network, said simulator including a plurality of bus, generator, load, line and tie line D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of network variables including generator mechanical powers, generator terminal voltage values, first and second load admittance values for each load, load real and reactive powers, external tie bus voltages and tie line real and reactive powers, to said computer, said computer including means for generating signals representative of said network variables to corresponding bus, generator, load, line and tie line D.C. circuits, said computer and said analog simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data, said computer including means for imposing one or more transient faults on said bus, generator, load, line and tie line D.C. circuits after a loadflow solution has been reached, and said computer including means for monitorIng said simulator to determine transient network responses and network stability resulting from the imposed faults.
Claim 9
Dependent Claim
193 words
A hybrid loadflow computer arrangement with transient stability analysis capability comprising a D.C. analog simulator of an A.C network, said simulator including a plurality of bus, generator, load, line and tie line D.C. circuits interconnected to correspond to the A.C. network, a digital computer, means for transmitting from a remote digital computer on-line input data representative of network variables including generator mechanical powers, generator terminal voltage values, first and second load admittance values for each load, load real and reactive powers, external tie bus voltages and tie line real and reactive powers, to said computer, said computer including means for generating signals representative of said network variables to corresponding bus, generator, load, line and tie line D.C. circuits, said computer and said analog simulator including means for operating said D.C. circuits and generating a loadflow solution with use of said input data, said computer including means for imposing one or more transient faults on said bus, generator, load, line and tie line D.C. circuits after a loadflow solution has been reached, and said computer including means for monitorIng said simulator to determine transient network responses and network stability resulting from the imposed faults.
Claim 10
Dependent Claim
39 words
A hybrid loadflow computer arrangement with transient stability analysis capability as set forth in claim 6 wherein said remote digital computer is a relatively large digital computer and the first mentioned digital computer is a relatively small digital computer.
Claim 11
Independent Claim
84 words
A method for making loadflow solutions in a hybrid loadflow computer arrangement comprising the steps of transmitting from a remote digital computer on-line input data representative of predetermined A.C. network variables to a digital computer, operating said digital computer to generate signals representative of said on-line data to a D.C. analog simulator including a plurality of D.C. circuits interconnected to represent the A.C. network, and operating said digital computer and said analog simulator to generate a loadflow solution with use of said input data.
Claim 12
Independent Claim
84 words
A method for making loadflow solutions in a hybrid loadflow computer arrangement comprising the steps of transmitting from a remote digital computer on-line input data representative of predetermined A.C. network variables to a digital computer, operating said digital computer to generate signals representative of said on-line data to a D.C. analog simulator including a plurality of D.C. circuits interconnected to represent the A.C. network, and operating said digital computer and said analog simulator to generate a loadflow solution with use of said input data.
Claim 13
Independent Claim
137 words
A method of making loadflow solutions, imposing transient faults, and monitoring transient stability in a hybrid loadflow computer arrangement having transient stability analysis capability comprising the steps of transmitting from a remote digital computer on-line input data representative of predetermined A.C. network variables to a digital computer, operating said computer to generate signals representative of said on-line data to a D.C. analog simulator including a plurality of D.C. circuits interconnected to represent the A.C. network, operating said computer and said analog simulator to generate a loadflow solution with use of said input data, operating said computer to impose one or more transient faults on said analog simulator D.C. circuits after a loadflow solution has been reached, and operating said computer to monitor said simulator to determine transient network responses and network stability resulting from the imposed faults.
Claim 14
Independent Claim
137 words
A method of making loadflow solutions, imposing transient faults, and monitoring transient stability in a hybrid loadflow computer arrangement having transient stability analysis capability comprising the steps of transmitting from a remote digital computer on-line input data representative of predetermined A.C. network variables to a digital computer, operating said computer to generate signals representative of said on-line data to a D.C. analog simulator including a plurality of D.C. circuits interconnected to represent the A.C. network, operating said computer and said analog simulator to generate a loadflow solution with use of said input data, operating said computer to impose one or more transient faults on said analog simulator D.C. circuits after a loadflow solution has been reached, and operating said computer to monitor said simulator to determine transient network responses and network stability resulting from the imposed faults.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |