Back to results
US 5,896,434 AGranted
Power supply system for driving reactor coolant recirculation pumps
AssigneeKabushiki Kaisha Toshiba
InventorsMasami Yoshizumi, Kazuhiro Narita, Fuminao Kamota
Life of this patent
Estimating the term…
Abstract
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor is configured in such a manner that: at least one normal-operation busbar branches off from either a main on-site power line or from a power line for auxiliary power generation that branches off from the main on-site power line, with a house transformer therebetween; at least one MG set is connected to one of these normal-operation busbars; one static adjustable-frequency power supply device is connected to each MG set; and a plurality of recirculation pumps is connected to each static adjustable-frequency power supply device.
Claims10
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- at least one normal-operation busbar branches off from either a main on-site power line or from a power line for auxiliary power generation that branches off from said main on-site power line, with a house transformer therebetween;
- at least one MG set is connected to one of said normal-operation busbars;
- one static adjustable-frequency power supply device is connected to each of said MG sets;
- and a plurality of reactor coolant recirculation pumps is connected to each of said static adjustable-frequency power supply devices.
1 more element
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- two power lines for auxiliary power generation branch off from a main on-site power line;
- two normal-operation busbars branch off from each of said power lines for auxiliary power generation, with a house transformer therebetween;
- two static adjustable-frequency power supply devices are connected directly to one normal-operation busbar of the first power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to each of said two normal-operation busbars of the other power line for auxiliary power generation;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
3 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- two power lines for auxiliary power generation branch off from a main on-site power line;
- two normal-operation busbars branch off from each of said power lines for auxiliary power generation, with a house transformer therebetween;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of the first power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected via an MG set thereto;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of the other power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
4 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- two power lines for auxiliary power generation branch off from a main on-site power line;
- two normal-operation busbars branch off from each of said power lines for auxiliary power generation, with a house transformer therebetween;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of the first power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected via an MG set thereto;
- one static adjustable-frequency power supply device is connected directly to the remaining normal-operation busbar of said power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to one normal-operation busbar of the other power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
4 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- two power lines for auxiliary power generation branch off from a main on-site power line;
- two normal-operation busbars branch off from each of said power lines for auxiliary power generation, with a house transformer therebetween;
- two static adjustable-frequency power supply devices are connected, each via an MG set, to one normal-operation busbar of the first power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of the other power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected directly to the remaining normal-operation busbar of said power line for auxiliary power generation;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
4 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- two power lines for auxiliary power generation branch off from a main on-site power line;
- two normal-operation busbars branch off from each of said power lines for auxiliary power generation, with a house transformer therebetween;
- two static adjustable-frequency power supply devices are connected, each via an MG set, to one normal-operation busbar of the first power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected directly to the remaining normal-operation busbar of said power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of the other power line for auxiliary power generation;
- one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar of said power line for auxiliary power generation;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
4 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- first and second power lines for auxiliary power generation branch off from a main on-site power line;
- first and second starter power lines that take electrical power from an independent power supply are provided;
- said first starter power line is connected via a breaker means to said first power line for auxiliary power generation;
- said second starter power line is connected via a breaker means to said second power line for auxiliary power generation;
- two normal-operation busbars branch off from each of said first and second power lines for auxiliary power generation, with a house transformer therebetween;
- two common busbars branch off from each of said first and second starter power lines, with a starter transformer therebetween;
- one static adjustable-frequency power supply device is connected via an MG set to one normal-operation busbar of said first power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected directly to the remaining normal-operation busbar thereof;
- one static adjustable-frequency power supply device is connected via an MG set to one normal-operation busbar of said second power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected directly to the remaining normal-operation busbar thereof;
- one static adjustable-frequency power supply device is connected via an MG set to one common busbar of said first starter power line;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
7 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- first and second power lines for auxiliary power generation branch off from a main on-site power line;
- first and second starter power lines that take electrical power from an independent power supply are provided;
- said first starter power line is connected via a breaker means to said first power line for auxiliary power generation;
- said second starter power line is connected via a breaker means to said second power line for auxiliary power generation;
- two normal-operation busbars branch off from each of said first and second power lines for auxiliary power generation, with a house transformer therebetween;
- two common busbars branch off from each of said first and second starter power lines, with a starter transformer therebetween;
- one static adjustable-frequency power supply device is connected directly to one normal-operation busbar of said first power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar thereof;
- one static adjustable-frequency power supply device is connected via an MG set to one normal-operation busbar of said second power line for auxiliary power generation and also one static adjustable-frequency power supply device is connected via an MG set to the remaining normal-operation busbar thereof;
- one static adjustable-frequency power supply device is connected directly to one common busbar of said second starter power line;
- and two reactor coolant recirculation pumps are connected to each of said static adjustable-frequency power supply devices.
7 more elements
A power supply system for driving reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- at least one MG set is connected to one normal-operation busbar;
- a plurality of static adjustable-frequency power supply devices is connected to each of said MG sets;
- and a plurality of reactor coolant recirculation pumps is connected to each of said static adjustable-frequency power supply devices.
A power supply system for driving reactor coolant reactor coolant recirculation pumps within an advanced boiling water reactor, wherein:
- at least one normal-operation busbar branches off from either a main on-site power line or from a power line for auxiliary power generation that branches off from said main on-site power line, with a house transformer therebetween;
- at least three MG sets are connected to the total number of said normal-operation busbars;
- at least one static adjustable-frequency power supply device is connected to each of said MG sets;
- and a plurality of reactor coolant recirculation pumps is connected to each of said static adjustable-frequency power supply devices.
1 more element
Dependencies are inferred from the claim text.