Analysis device of catenary-based transportation system, analysis method and program therefor

• US 9,035,495 B2
• Filed: 02/13/2012
• Issued: 05/19/2015
• Est. Priority Date: 02/18/2011
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries Engineering, Ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Kono, Takayuki, Morita, Katsuaki, Ozaki, Kazuki, Nagaki, Yasunari
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Willoughby, Terrence
• Application Number:
  US13/805,381
• Publication Number:
  US 20130088085A1
• Time in Patent Office: 1,191 Days
• US Class Current: 307/69
• CPC Class Codes: B60M 3/06 Arrangements for consuming regenerative power
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc

Abstract

In a catenary-based transportation system which is provided with integrated power supply equipment having an electricity storage unit which stores electricity regenerated by vehicles traveling by electricity received from a catenary and supplies electricity to the catenary and the other power supply system which is a power supply system different from the electricity storage unit concerned, the performance of a rectifier of the other power supply system is determined based on a power-supplying contribution ratio γ of the other power supply system so that the cost value of the integrated power supply equipment becomes lower than a target cost value.

Claims

1. An analysis device of a catenary-based transportation system which is provided with integrated power supply equipment having an electricity storage unit which stores electricity regenerated by vehicles traveling by electricity received from a catenary and also supplies electricity to the catenary and another power supply system which is a power supply system different from the electricity storage unit, the analysis device comprising:

a first minimum parallel-array number-calculating portion in which based on maximum input electricity input to the electricity storage unit and allowable input electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit in the catenary-based transportation system, a minimum integer greater than a proportion of the maximum input electricity to the allowable input electricity is calculated as a first minimum parallel-array number of the electricity storage devices which configure the electricity storage unit;

a second minimum parallel-array number-calculating portion in which a minimum integer which satisfies such conditions that a sum of the amount of reduced electric energy of the electricity storage unit during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the electricity storage unit in the case of a power-supplying contribution ratio γ

of the other power supply system in a total discharged capacity of the integrated power supply equipment is calculated as a second minimum parallel-array number of the electricity storage devices which configure the electricity storage unit;

a portion for specifying the number of electricity storage devices arrayed in parallel in which a greater value obtained by comparing the first minimum parallel-array number with the second minimum parallel-array number is specified as a first necessary parallel-array number of electricity storage devices which configure the electricity storage unit; and

a power equipment configuration conditions-specifying portion in which a determination is made as to whether or not a cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ and

the cost of the electricity storage unit configured by the first necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value, where the cost value of power supply equipment is equal to or less than the target cost value, the power-supplying contribution ratio γ and

the first necessary parallel-array number are output as configuration conditions of the integrated power supply equipment, and where the cost value of power supply equipment is in excess of the target cost value, the cost value of power supply equipment is calculated by changing the power-supplying contribution ratio γ

until the cost value of power supply equipment becomes equal to or less than the target cost value.

2. The analysis device according to claim 1,

wherein the catenary-based transportation system further comprises a storage power supply equipment which includes an electricity storage unit connected to a site different from a position at which the other power supply system is connected to a catenary,

wherein the analysis device further comprises:

a third minimum parallel-array number-calculating portion in which based on maximum output electricity output from the electricity storage unit of the storage power supply equipment and allowable output electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit of the storage power supply equipment, a minimum integer greater than a proportion of the maximum output electricity to the allowable output electricity is calculated as a third minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment; and

a fourth minimum parallel-array number-calculating portion in which a minimum integer which satisfies such conditions that a sum of the amount of reduced electric energy of the electricity storage unit of the storage power supply equipment during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit of the storage power supply equipment based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the storage power supply equipment is calculated as a fourth minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment,

wherein the portion for specifying the number of electricity storage devices arrayed in parallel compares the third minimum parallel-array number with the fourth minimum parallel-array number and specifies a greater value as a second necessary parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment, and

wherein the power equipment configuration conditions-specifying portion determines whether or not a total cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ

, the cost of the electricity storage unit of the integrated power supply equipment which is configured by the first necessary parallel-array number of electricity storage devices, and the cost of the storage power supply equipment having the electricity storage unit which is configured by the second necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value,

wherein the power equipment configuration conditions-specifying portion outputs the power-supplying contribution ratio γ and

the first necessary parallel-array number as configuration conditions of the integrated power supply equipment and also outputs the second necessary parallel-array number as configuration conditions of the storage power supply equipment, where the total cost value of power supply equipment is equal to or less than the target cost value, and

wherein the power equipment configuration conditions-specifying portion calculates the total cost value of power supply equipment by changing the power-supplying contribution ratio γ

until the total cost value of power supply equipment becomes equal to or less than the target cost value, where the total cost value of power supply equipment is in excess of the target cost value.

3. An analysis method by an analysis device of a catenary-based transportation system which is provided with integrated power supply equipment having an electricity storage unit which stores electricity regenerated from vehicles traveling by electricity received from a catenary and also supplies electricity to the catenary and the other power supply system which is a power supply system different from the electricity storage unit concerned, the analysis method comprising:

calculating a minimum integer greater than a proportion of maximum input electricity to allowable input electricity as a first minimum parallel-array number of the electricity storage devices which configure the electricity storage unit based on the maximum input electricity input to the electricity storage unit and the allowable input electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit in the catenary-based transportation system;

calculating a minimum integer as a second minimum parallel-array number of the electricity storage devices which configure the electricity storage unit, the minimum integer satisfying such conditions that a sum of the amount of reduced electric energy of the electricity storage unit during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the electricity storage unit in the case of a power-supplying contribution ratio γ

of the other power supply system in a total discharged capacity of the integrated power supply equipment;

specifying a greater value obtained by comparing the first minimum parallel-array number with the second minimum parallel-array number as a first necessary parallel-array number of electricity storage devices which configure the electricity storage unit;

determining whether or not a cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ and

the cost of the electricity storage unit which is configured by the first necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value;

outputting the power-supplying contribution ratio γ and

the first necessary parallel-array number as configuration conditions of the integrated power supply equipment in the case where the cost value of power supply equipment is equal to or less than the target cost value; and

calculating the cost value of the power supply equipment is calculated by changing the power-supplying contribution ratio γ

until the cost value of power supply equipment becomes equal to or less than the target cost value in the case where the cost value of power supply equipment is in excess of the target cost value.

4. The analysis method according to claim 3,

wherein the catenary-based transportation system further comprises a storage power supply equipment which includes an electricity storage unit connected to a site different from a position at which the other power supply system is connected to a catenary, and,

wherein the analysis method further comprises:

calculating a minimum integer greater than a proportion of maximum output electricity to allowable output electricity as a third minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment based on the maximum output electricity output from the electricity storage unit of the storage power supply equipment and the allowable output electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit of the storage power supply equipment;

calculating a minimum integer as a fourth minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment, the minimum integer satisfying such conditions that a sum of the amount of reduced electric energy of the electricity storage unit of the storage power supply equipment during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit of the storage power supply equipment based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the storage power supply equipment;

specifying a greater value obtained by comparing the third minimum parallel-array number with the fourth minimum parallel-array number as a second necessary parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment;

determining whether or not a total cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ

, the cost of the electricity storage unit of the integrated power supply equipment which is configured by the first necessary parallel-array number of electricity storage devices, and the cost of the storage power supply equipment having the electricity storage unit configured by the second necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value;

outputting the power-supplying contribution ratio γ and

the first necessary parallel-array number as configuration conditions of the integrated power supply equipment and also the second necessary parallel-array number as configuration conditions of the storage power supply equipment in the case where the total cost value of power supply equipment is equal to or less than the target cost value; and

calculating the total cost value of power supply equipment by changing the power-supplying contribution ratio γ

until the total cost value of power supply equipment becomes equal to or less than the target cost value in the case where the total cost value of power supply equipment is in excess of the target cost value.

5. A recording medium storing a program for causing a computer of an analysis device of a catenary-based transportation system which is provided with integrated power supply equipment having an electricity storage unit which stores electricity regenerated by vehicles traveling by electricity received from a catenary and supplies electricity to the catenary and the other power supply system which is a power supply system different from the electricity storage unit, to perform as:

a first minimum parallel-array number-calculating unit which calculates a minimum integer greater than a proportion of a maximum input electricity to an allowable input electricity as a first minimum parallel-array number of the electricity storage devices which configure the electricity storage unit based on the maximum input electricity input to the electricity storage unit in the catenary-based transportation system and the allowable input electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit;

a second minimum parallel-array number-calculating unit which calculates a minimum integer as a second minimum parallel-array number of the electricity storage devices which configure the electricity storage unit, the minimum integer satisfying such conditions that a sum of the amount of reduced electric energy of the electricity storage unit during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the electricity storage unit in the case of a power-supplying contribution ratio γ

of the other power supply system in a total discharged capacity of the integrated power supply equipment;

a unit for specifying the number of electricity storage devices arrayed in parallel which specifying a greater value obtained by comparing the first minimum parallel-array number with the second minimum parallel-array number as a first necessary parallel-array number of electricity storage devices which configure the electricity storage unit; and

a power equipment configuration conditions specifying unit which determines whether or not a cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ and

the cost of the electricity storage unit configured by the first necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value, the power equipment configuration conditions specifying means outputting the power-supplying contribution ratio γ and

the first necessary parallel-array number as configuration conditions of the integrated power supply equipment in the case where the cost value of power supply equipment is equal to or less than the target cost value, and the power equipment configuration conditions calculating the cost value of power supply equipment by changing the power-supplying contribution ratio γ

until the cost value of power supply equipment becomes equal to or less than the target cost value in the case where the cost value of power supply equipment is in excess of the target cost value.

6. The recording medium according to claim 5, storing the program for causing the computer of the analysis device of the catenary-based transportation system which further comprises a storage power supply equipment which includes an electricity storage unit connected to a site different from a position at which the other power supply system is connected to a catenary, to perform as:

a third minimum parallel-array number-calculating unit calculates a minimum integer greater than a proportion of maximum output electricity to allowable output electricity as a third minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment based on the maximum output electricity output from the electricity storage unit of the storage power supply equipment and allowable output electricity which is allowed by a single serial-array system of electricity storage devices which configure the electricity storage unit of the storage power supply equipment; and

a fourth minimum parallel-array number-calculating unit which calculates a minimum integer as a fourth minimum parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment, the minimum integer satisfying such conditions that a sum of the amount of reduced electric energy of the electricity storage unit of the storage power supply equipment during a predetermined time period highest in operation frequency of the vehicles in the catenary-based transportation system and charged capacity accumulated in the electricity storage unit of the storage power supply equipment based on electricity regenerated during the predetermined time period is in excess of discharged capacity of the storage power supply equipment, wherein

the unit for specifying the number of electricity storage devices arrayed in parallel compares the third minimum parallel-array number with the fourth minimum parallel-array number and specifies a greater value as a second necessary parallel-array number of electricity storage devices which configure the electricity storage unit of the storage power supply equipment,

the power equipment configuration conditions specifying unit determines whether or not a total cost value of power supply equipment which is composed of the cost of the other power supply system in the case of the power-supplying contribution ratio γ

, the cost of the electricity storage unit of the integrated power supply equipment which is configured by the first necessary parallel-array number of electricity storage devices, and the cost of the storage power supply equipment having the electricity storage unit configured by the second necessary parallel-array number of electricity storage devices is equal to or less than a previously-stored target cost value, outputs the power-supplying contribution ratio γ and

the first necessary parallel-array number as configuration conditions of the integrated power supply equipment and also outputs the second necessary parallel-array number as configuration conditions of the storage power supply equipment in the case where the total cost value of power supply equipment is equal to or less than the target cost value, and

the power equipment configuration conditions specifying unit calculates the total cost value of power supply equipment by changing the power-supplying contribution ratio γ

until the total cost value of power supply equipment becomes equal to or less than the target cost value in the case where the total cost value of power supply equipment is in excess of the target cost value.