Redundant computers and computer communication networks in a high-voltage power transmission system
First Claim
1. A method for sending protection or control signals from an active computer in a high-voltage power transmission system comprising a hierarchical structure comprising at least two hierarchical levels including a pole level and a converter level and active protection computers and active and standby control computers in the hierarchical structure, at least two power converters operatively interconnected with a direct current power line and connected to the control computers, and at least two separate computer communication networks to which all of the active protection computers and active and standby control computers are operatively connected, the method comprising:
- sending, from said active computer in the high-voltage power transmission system, protection or control signals that are to be received by at least one other computer at a same or another hierarchical level simultaneously on said at least two separate computer communication networks to which said active computer is connected; and
synchronizing said sending of said protection or control signals with processing being performed in relation to said protection or control signals in said active computer,wherein the sending comprises sending at least some of said protection or control signals using a broadcasting or multicasting scheme so that more than one other computer can receive said protection or control signals via said two separate networks.
6 Assignments
0 Petitions
Accused Products
Abstract
A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected.
8 Citations
16 Claims
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1. A method for sending protection or control signals from an active computer in a high-voltage power transmission system comprising a hierarchical structure comprising at least two hierarchical levels including a pole level and a converter level and active protection computers and active and standby control computers in the hierarchical structure, at least two power converters operatively interconnected with a direct current power line and connected to the control computers, and at least two separate computer communication networks to which all of the active protection computers and active and standby control computers are operatively connected, the method comprising:
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sending, from said active computer in the high-voltage power transmission system, protection or control signals that are to be received by at least one other computer at a same or another hierarchical level simultaneously on said at least two separate computer communication networks to which said active computer is connected; and synchronizing said sending of said protection or control signals with processing being performed in relation to said protection or control signals in said active computer, wherein the sending comprises sending at least some of said protection or control signals using a broadcasting or multicasting scheme so that more than one other computer can receive said protection or control signals via said two separate networks. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A high-voltage power transmission system, comprising:
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a hierarchical structure comprising at least two hierarchical levels including a pole level and a converter level, active protection computers and active and standby control computers in the hierarchical structure, at least two power converters operatively connected to the control computers, a direct current power line operatively interconnecting the at least two power converters, and at least two separate computer communication networks to which all of the active protection computers and active and standby control computers are operatively connected, wherein an active computer is arranged to send the same protection or control signals that are to be received by at least one other computer at a same or another hierarchical level synchronized with processing being performed in relation to said protection or control signals in said active computer simultaneously on said at least two separate computer communication networks to which said active computer is connected and is arranged to send at least some of said protection or control signals using a broadcasting or multicasting scheme so that more than one other computer can receive protection or control signals via said two separate networks. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A control station for monitoring or protecting at least a part of a high-voltage power transmission system, the control station comprising:
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a hierarchical structure comprising at least two hierarchical levels including a pole level and a converter level, active protection computers and active and standby control computers in the hierarchical structure, at least two power converters operatively connected to the control computers, a direct current power line operatively interconnecting the at least two power converters, and at least two separate computer communication networks to which all of the active protection computers and active and standby control computers are operatively connected, wherein an active computer is arranged to send protection or control signals that are to be received by at least one other computer at the same or another hierarchical level synchronized with processing being performed in relation to said protection or control signals in said active computer simultaneously on said at least two separate computer communication networks to which it is connected and is arranged to send at least some of said protection or control signals using a broadcasting or multicasting scheme so that more than one other computer can receive protection or control signals via said two separate networks.
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Specification