DC-feeding-voltage calculating apparatus, DC-feeding-voltage control system, and DC-feeding-voltage calculating method

Patent metadata

Field	Value
Publication number	US-10633008-B2
Application number	US-201616070402-A
Country	US
Kind code	B2
Filing date	Mar 15, 2016
Priority date	Mar 15, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A DC-feeding-voltage calculating apparatus includes storage that stores train model information including information for controlling a regenerative power reducing amount in a train in an electrified section; feeding network model information including position information on a substation; and substation model information including control information on a substation voltage. On the basis of: the stored information; a voltage value, current values of feeders by train direction, the voltage and current values being measured in the substation; and first train information on a train including a wireless communication apparatus, an estimator estimates second train information on a train not including a wireless communication apparatus and outputs train operation information. A calculator, on the basis of the stored information and the train operation information, calculates a substation voltage setting value for controlling the substation voltage such that regenerative power is increased in a regenerative car in the electrified section.

First claim

The invention claimed is:

1. A DC-feeding-voltage calculating apparatus connected to a plurality of substations that supply electric power to a feeder in a DC electrified section of an electric railroad, the DC-feeding-voltage calculating apparatus calculating a substation voltage applied to the feeder,
the DC-feeding-voltage calculating apparatus comprising:
a model-information storage to store model information, the model information including train model information, feeding network model information, and substation model information, the train model information including information for controlling a regenerative power reducing amount in a train existing in the DC electrified section, the feeding network model information including position information on the substation, the substation model information including control information on the substation voltage;
a train-operation-information estimator to estimate second train information on the basis of the model information, first train information, a voltage value, and current values of feeders by train direction, the voltage value and the current values being measured in the substation, the first train information being information on a train equipped with a first wireless communication apparatus that performs wireless communication with the DC-feeding-voltage calculating apparatus, the second train information being information on a train existing in the DC electrified section and not equipped with a second wireless communication apparatus that performs wireless communication with the DC-feeding-voltage calculating apparatus, the train-operation-information estimator outputting train operation information including the first train information and the second train information; and
a substation-voltage-setting-value calculator to calculate, on the basis of the model information and the train operation information, a substation voltage setting value for controlling the substation voltage such that regenerative power is increased in a regenerative car existing in the DC electrified section, the substation-voltage-setting-value calculator outputting the substation voltage setting value to the substations.

2. The DC-feeding-voltage calculating apparatus according to claim 1 , wherein
the first train information includes information concerning an on-rail position of, a voltage value of a pantograph point voltage of, a current value of an electric current supplied from an overhead line to, power-running power of, regenerative power of, and regeneratable power of, a first train, the first train being equipped with the first wireless communication apparatus, the first train measuring the on-rail position, the voltage value of the pantograph point voltage, and the current value supplied from the overhead line, the power-running power, and the regenerative power and estimating the regeneratable power, and
the second train information includes information concerning an on-rail position of, power-running power of, regenerative power of, and regeneratable power of, a second train not equipped with the second wireless communication apparatus.

3. The DC-feeding-voltage calculating apparatus according to claim 1 , wherein
the first train information includes information concerning an on-rail position of, a voltage value of a pantograph point voltage of, a current value of an electric current supplied from an overhead line to, power-running power of, and regenerative power of, a first train equipped with the first wireless communication apparatus, the first train measuring the on-rail position, the voltage value of the pantograph point voltage, the current value of the electric current supplied from the overhead line, the power-running power, and the regenerative power,
the second train information includes information concerning an on-rail position of, power-running power of, regenerative power of, and regeneratable power of, a second train not equipped with the second wireless communication apparatus, and
the train-operation-information estimator estimates, on the basis of the voltage value and the current value included in the first train information, regeneratable power of the first train, includes information concerning the estimated regeneratable power of the first train in the train operation information and outputs the information concerning the estimated regeneratable power.

4. The DC-feeding-voltage calculating apparatus according to claim 2 , wherein the train-operation-information estimator
estimates presence or absence of the second train on the basis of voltage values measured in the substations and current values of feeders by train direction, position information on the substation, the on-rail position of the first train, the voltage value of the pantograph point voltage of the first train, and the current value of the electric current supplied from the overhead line to the first train, the current values of the feeders being measured in the substations, the on-rail position of the first train, the voltage value of the pantograph point voltage and the current value supplied from the overhead line being included in the first train information,
includes information concerning the presence or absence of the second train in the train operation information, and
outputs the information concerning the presence or absence of the second train.

5. The DC-feeding-voltage calculating apparatus according to claim 4 , wherein, when the DC electrified section is divided into a plurality of subsections by positions of the substations and the on-rail position of the first train, the train-operation-information estimator estimates presence or absence of the second train in each of the subsections and estimates the second train information in a section where the second train is estimated to exist.

6. The DC-feeding-voltage calculating apparatus according to claim 5 , wherein, when the train-operation-information estimator estimates that the second train exists in plural ones of the subsections, the train-operation-information estimator regards, as one section, subsections including all subsections where the second train is estimated to exist and estimates the second train information in the subsections regarded as one section.

7. A DC-feeding-voltage calculating apparatus connected to a plurality of substations that supply electric power to a feeder in a DC electrified section of an electric railroad, the DC-feeding-voltage calculating apparatus calculating a substation voltage applied to the feeder,
the DC-feeding-voltage calculating apparatus comprising:
a model-information storage to store model information, the model information including train model information, feeding network model information, and substation model information, the train mode information including information for controlling a regenerative power reducing amount in a train existing in the DC electrified section, the feeding network model information including position information on the substation, the substation model information including control information on the substation voltage;
a train-operation-information estimator to estimate second train information on the basis of the model information, first train information, a voltage value, and current values of feeders by train direction, the first train information being information on a train equipped with a first wireless communication apparatus that performs wireless communication with the DC-feeding-voltage calculating apparatus, the voltage value and the current values of the feeders being measured in the substation, the second train information being information on a train existing in the DC electrified section and not equipped with a second wireless communication apparatus that performs wireless communication with

Assignees

• Mitsubishi Electric Corp

Inventors

• Mochimaru Hironori
• Fujita Keiki
• Ueda Kenji
• Wada Toshihiro

Classifications

• B60L5/20

  Details of contact bow · CPC title

• H02J1/06

  Two-wire DC power distribution systems · CPC title

• B61L25/025

  Absolute localisation, e.g. providing geodetic coordinates · CPC title

• B60L2260/44

  by parameter estimation · CPC title

• B60L2200/26

  Rail vehicles · CPC title