US3689823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage electric network
Assignee: ABB Norden Holding AB
•
Filing: 1971-03-01
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Granted: 1972-09-05
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Expires: 1991-03-01
Abstract
Abstract A high voltage electric network has an AC part and a DC part and a converter station connecting the parts. An arrangement is provided for controlling the converter station to maintain a predetermined power exchange between the two parts of the network and to dampen oscillations arising in the AC part. The AC part has two portions as seen from the connection point of the converter station. The converter station is connected to the AC part by an inductive member which has an intermediate output connected to the portion of the AC part of lower impedance while one end of the inductive member is connected to the converter and the other end portion of the AC part.
Inventors
- 👤 Erich Uhlmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/36; Y; Y02; Y02E; Y02E60/00; Y02E60/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
High voltage electric network comprising an AC part and a DC part, a converter station connecting said parts, means to control the converter station to maintain a predetermined power exchange between the two parts of the network and to dampen oscillations arising in the AC part, in which the AC part comprises first and second portions as seen from the connection point of the converter, the connection between the converter station and the AC part comprising an inductive member having an intermediate output which is connected to the first portion of the AC part and which is connected at one end to the second portion of the AC part and at the other end to the converter station.
Claim 2
Dependent Claim
118 words
High voltage electric network comprising an AC part and a DC part, a converter station connecting said parts, means to control the converter station to maintain a predetermined power exchange between the two parts of the network and to dampen oscillations arising in the AC part, in which the AC part comprises first and second portions as seen from the connection point of the converter, the connection between the converter station and the AC part comprising an inductive member having an intermediate output which is connected to the first portion of the AC part and which is connected at one end to the second portion of the AC part and at the other end to the converter station.
Claim 3
Dependent Claim
29 words
High voltage electric network according to claim 1 in which the second portion of the AC part has a higher impedance than the first portion of the AC part.
Claim 4
Dependent Claim
23 words
High voltage electric network according to claim 1, in which said inductivE member comprises a reactor connected in parallel with an output transformer.
Claim 5
Dependent Claim
16 words
High voltage electric network according to claim 1, in which said inductive member comprises a reactor.
Claim 6
Dependent Claim
30 words
High voltage electric network according to claim 4, in which said reactor is provided with a short-circuiting member to short-circuit the reactor when the DC part is not in operation.
Claim 7
Dependent Claim
41 words
High voltage electric network according to claim 1, in which the reactance between the ends of said inductive member is n times the short-circuiting reactance of the first portion of the AC network, n having a value between two and six.
Claim 8
Dependent Claim
44 words
High voltage electric network according to claim 1, in which the DC part comprises a DC link which joins two points of the AC part over converter stations, the connection of the converter stations at both said points being over intermediate outputs of reactors.
References Cited (Backward Citations)
US2730667A
Cited
US3526779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |