# US 2014/0152087 A1 · Control Device for Railway Power Conditioner and Control System for Railway Power Conditioner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152087 A1 - Document ID: US20140152087A1 - Status: Published application - Kind: A1 - Application number: 14/080,919 - Filed: 2013-11-15 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Hitachi, Ltd. - Applicants: Hitachi, Ltd. - Inventors: Yasuhiro NAKATSUKA; Yasuhiro IMAZU; Osamu SAKUCHI; Masaya ICHINOSE; Yasuhiro KIYOFUJI; Akira BANDO; Jun NARUSHIMA - Web page: https://patentgrep.com/patent/US20140152087A1 ## CPC - H02J 3/46: Controlling the sharing of generated power between the generators, sources or networks - B60M 3/02: with means for maintaining voltage within a predetermined range (in general G05F) - B60M 3/06: Arrangements for consuming regenerative power - H02J 3/28: Arrangements for balancing of the load in networks by storage of energy - H02J 2105/30: the load networks being external to vehicles, i.e. exchanging power with vehicles - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B60M: POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES (control of points and safety arrangements along railway lines B61L; construction of rails and points in general E01B) ## Abstract Feeder sections to be a target of interchange are to be expanded in order to improve the effect of power interchange between feeders. A control device for railway power conditioner is connected to a first feeder connected to a load side of a transformer in a first railway substation including a transformer receiving power from a power grid, and a second feeder connected to a load side of a transformer in a second railway substation including a transformer receiving power from a power grid, and decides an amount of power interchanged between the first and second feeders. The control device decides the amount of power interchanged between the first and second feeders, using the received power in the first railway substation and power on the first feeder, and the received power in the second railway substation and power on the second feeder. ## Claims ### Claim 1 A control device for railway power conditioner which is connected to a first feeder connected to a load side of a transformer in a first railway substation including a transformer receiving power from a power grid, and a second feeder connected to a load side of a transformer in a second railway substation including a transformer receiving power from a power grid, and which decides an amount of power interchanged between the first and second feeders, wherein the amount of power interchanged between the first and second feeders is decided, using the received power in the first railway substation and power on the first feeder, and the received power in the second railway substation and power on the second feeder. ### Claim 2 (depends on 1) The control device for railway power conditioner according to claim 1, wherein the received power in the railway substation is obtained from a measuring unit installed at a power receiving end thereof. ### Claim 3 (depends on 1) The control device for railway power conditioner according to claim 1, wherein the received power in the railway substation is obtained from a measuring unit installed on the load side of the transformer receiving power from the power grid. ### Claim 4 (depends on 1) The control device for railway power conditioner according to claim 1, wherein the amount of power interchanged between the first and second feeders is decided by comparing a difference between the received power in the first railway substation and the power on the first feeder and a difference between the received power in the second railway substation and the power on the second feeder. ### Claim 5 (depends on 1) The control device for railway power conditioner according to claim 1, wherein the transformer is a three-phase/two-phase conversion transformer that converts three phases into two phases, and the two phases on the load side thereof is connected to the feeder. ### Claim 6 (depends on 1) The control device for railway power conditioner according to claim 1, wherein an amount of power purchased after interchange in the first and second railway substations is decided, using the amount of power interchanged between the first and second feeders. ### Claim 7 (depends on 4) The control device for railway power conditioner according to claim 4, wherein power interchange is stopped when the difference between the received power in the first railway substation and the power on the first feeder and the difference between the received power in the second railway substation and the power on the second feeder have the same polarity, or when these differences have the opposite polarities but have a small absolute value. ### Claim 8 (depends on 7) The control device for railway power conditioner according to claim 7, wherein when power interchange is carried out using a power conditioner, in an operation to stop the power interchange, a circuit breaker connecting the feeder or connecting a transformer for the power conditioner with the feeder is turned on to stand by in a gate blocking state. ### Claim 9 (depends on 8) The control device for railway power conditioner according to claim 8, wherein, during a standby state, a direct current voltage is maintained at a higher level than a charging voltage of a grid voltage, by a charger device of a power conditioner direct current circuit. ### Claim 10 A control system for railway power conditioner comprising: a first control device for railway power conditioner which is connected to a first feeder connected to a load side of a transformer in a first railway substation including a transformer receiving power from a power grid, and a second feeder connected to a load side of a transformer in a second railway substation including a transformer receiving power from a power grid, and which decides an amount of power interchanged between the first and second feeders; and a second control device for railway power conditioner which is connected to a third feeder connected to a load side of a transformer in a third railway substation including a transformer receiving power from a power grid, and a fourth feeder connected to the load side of the transformer in the first railway substation, and which decides an amount of power interchanged between the third and fourth feeders, wherein the first control device for railway power conditioner decides the amount of power interchanged between the first and second feeders, using the received power in the first railway substation and power on the first feeder, and the received power in the second railway substation and power on the second feeder, and the second control device railway power conditioner decides the amount of power interchanged between the third and fourth feeders, using the received power in the first railway substation and power on the fourth feeder, and the received power in the third railway substation and power on the third feeder. ### Claim 11 (depends on 10) The control system for railway power conditioner according to claim 10, wherein the received power in the railway substation is obtained from a measuring unit installed at a power receiving end thereof. ### Claim 12 (depends on 10) The control system for railway power conditioner according to claim 10, wherein the received power in the railway substation is obtained from a measuring unit installed on the load side of the transformer receiving power from the power grid. ### Claim 13 (depends on 10) The control system for railway power conditioner according to claim 10, wherein the amount of power interchanged between the first and second feeders is decided by comparing a difference between the received power in the first railway substation and the power on the first feeder and a difference between the received power in the second railway substation and the power on the second feeder, and the amount of power interchanged between the third and fourth feeders is decided by comparing a difference between the received power in the first railway substation and the power on the fourth feeder and a difference between the received power in the third railway substation and the power on the third feeder. ### Claim 14 (depends on 10) The control system for railway power conditioner according to claim 10, wherein received power after interchange is found for each railway substation, based on the amount of power interchanged between two feeders connected between adjacent railway substations and the received power in each railway substation, and a sum of the two received powers after interchange that are found is calculated for each railway substation, the sum of the two received powers after interchange that is calculated for the first railway substation and the sum of the two received powers after interchange that is calculated for the second railway substation are compared, and the amount of power interchanged between the first and second feeders is controlled by the first control device for railway power conditioner, and the sum of the two received powers after interchange that is calculated for the first railway substation and the sum of the two received powers after interchange that is calculated for the third railway substation are compared, and the amount of power interchanged between the third and fourth feeders is controlled by the second control device for railway power conditioner.