JP2002187552A - Electric railroad power system control method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support a stable train service by quickening recovery from a short-circuit accident. SOLUTION: A train is equipped with a GPS system to send a train position to a train position detection mechanism 22 arranged on the ground. The train position detection mechanism 22 detects the position of the train on rail with designated time intervals and within several tens meters error. The detected train position on the rail is converted in a train position on a power system with a train position monitoring process 11 and are stored in a train database 14 and is renewed one after another. When the short-circuit accident occurs, a facility monitoring mechanism 3 detects a shut down current and sends information to a control process 12. The control process 12 calculates an accident occurrence position and compares the accident occurrence position and the train position stored in the train database 14, and detects the existence of train in a power supply section where the accident occurred and existence of a train passing through the accident occurrence position when the accident occurred. The control process 12 selects information that is sent to the train and sends it according to detection results.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric railway power system control system, which transmits and receives data to and from a train to control a substation based on a train position, provide information on power supply to the train, and The present invention relates to a power system control device that supports recovery from a system accident.

[0002]

2. Description of the Related Art In a conventional electric railway power system control device,
No information has been provided or operation instructions have been given to the train. In addition, in the case of a conventional electric railway power system control device, when an accident occurs in the electric power system, it is determined whether or not the train is on the track circuit in the accident range, and whether the train is related to the accident is determined. I guess.

[0003]

However, the conventional method of detecting the position of a train is based on the fact that the track circuit installed on the track is short-circuited by the wheels of the train, so that the train exists within the range of the track circuit. Because it is detected, there is only resolution of the length of the installed track circuit. And since the length of the track circuit is usually several kilometers, the train position can only be grasped within a range of several kilometers, and if there is a short circuit accident, it is necessary to accurately determine whether the train is related to the accident Was difficult. Further, in the conventional electric railway power system control device, the power supply is controlled in accordance with a predetermined time zone, for example, a morning or evening commuting time zone or a subsequent off-hours time zone. There is a problem that standby power is consumed even in a section where no train is present because the same power is supplied as when a train is present.

Further, information collected by the power system control device, for example, the amount of supplied electric power, accident information, information for limiting power consumption, etc., cannot be directly transmitted to the train, and the train operation is not performed. Since the information is transmitted to the train from another managing mechanism, it is difficult for the train operator to grasp the situation of the accident, and there is a problem that it takes time to recover from the accident.

It is an object of the present invention to stop the recovery from a short circuit accident and to support stable train operation.

[0006]

The object of the present invention is to constantly grasp the position of a train in the power system with an error of several tens of meters or less, and to determine the position on the power system of a power system accident such as an overhead line short circuit accident.
This is achieved by comparing the train position in the electric power system at the time of the occurrence of the accident, determining whether or not the accident is related to the train, and transmitting information such as a result of the determination and an instruction based on the result to the train.

More specifically, a train position detecting means for detecting the position of the train on the track at predetermined time intervals with an error of several tens of meters or less, and a train position on the track detected by the train position detecting means are determined. A power system train position detecting means for converting to a train position in the power system, a train database storing train positions in the power system output by the power system train position detecting means, and a power system accident occurrence position on the power system is detected. The power system train position at the time of the accident occurrence is read from the train database and compared with the occurrence position, and the presence or absence of a train in the power transmission section where the accident has occurred is determined using the comparison result. And a control operation means for outputting accident information to the train.

[0008] When it is determined from the comparison result that there is a train that has passed the accident location at the time when the accident occurred, the control operation means outputs a necessary check instruction to the train. It is desirable to configure so that

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram showing the present embodiment. In this embodiment, a computer system 1 that performs monitoring and control, a LAN (Local Area Network) 4 that shares communication with other devices connected to the computer system 1, and a train Train operation management device 2 which detects the position of train and communicates with train 23
A facility monitoring mechanism 3 connected to the LAN 4 for monitoring and controlling the substation and outputting facility information, and a substation 31 connected to the facility monitoring mechanism 3 and transmitting power to a power system (overhead line). Is done.

The computer system 1 includes a train operation management device 2
Position monitoring processing 1 which is a power system train position detecting means for receiving information from the system and converting the information into a current train position in the power system
1, a train database 14 that records the power system train position output by the train position monitoring processing 11 and information received from the operation management device 2, and a current state of the substation that receives the equipment information from the equipment monitoring mechanism 3 , An equipment database 16 that records the state of the substations determined in the equipment state monitoring processing 13, information received from the train position monitoring processing 11 and the equipment state monitoring processing 13, A control processing unit that outputs a control signal for suppressing power supply to a substation 31 in a non-existent power system section and provides accident information and the like to the train via the train operation management device 2. And a log database 1 for storing input / output signals of the control processing 12
5 is comprised. The current train position in the electric power system determined by the train position monitoring process 11 is a positional relationship between the substation and the train, that is, which substation is in charge of the section and how far away from the substation is. Specifically, it is indicated by a distance from a preset position of the assigned section.

The train operation management device 2 includes a train transmitting / receiving mechanism 21 for transmitting / receiving information to / from the train 23, a train position based on information received from the train via the train transmitting / receiving mechanism 21, and a connection to the LAN 4. It is configured to include a train position detecting mechanism 22 that transmits and receives information to and from the computer system 1 via the computer system 1. The train 23 is equipped with a position detection system using a GPS system, and the train position detection mechanism 22
Using the position information output from the GPS system, the relative position of the train 23 to the track circuit (train track circuit position information)
Means for calculating and outputting In the present embodiment, the GPS system mounted on the train 23 and the train position detecting mechanism 22 constitute a train position detecting means.

The information transmitted from the train 23 includes a train number, position information output from a GPS system, a speed, a train operation state, a train receiving voltage, and a power consumption (Kw /
h). This information is provided at predetermined time intervals.
Sent continuously. The speed may be calculated by the train position detecting mechanism 22 based on the position information. According to the GPS system, the position of the train can be detected with an error of several tens of meters or less, that is, an error of a fraction of the length of the train. Instead of using the GPS system, any system that detects the position of the train with an error of several tens of meters or less may be used.

In this embodiment, the information received from the train via the train transmitting / receiving mechanism 21 is transmitted to the LAN 4 via the train position detecting mechanism 22, but is received from the LAN 4 and transmitted to the train 23. This information is received by the train transmitting / receiving mechanism 21 from the LAN 4 and transmitted to the train 23. Of course, except for the position information output from the GPS system,
The information received from the train is transmitted directly to the train
The information may be transmitted to the AN 4, or the information transmitted to the train 23 from the LAN 4 via the train position detection mechanism 22 may be received, and the information may be transmitted from the train transmission / reception mechanism 21 to the train 23.

The equipment monitoring mechanism 3 monitors the operation status, voltage, and current value of each device arranged at each substation at predetermined time intervals, outputs the monitored value to the LAN 4, and responds to an instruction from the computer system 1. Thus, a signal instructing the substation to increase or decrease the amount of power transmission can be output. When a short-circuit current flows, the equipment monitoring mechanism 3 outputs the occurrence time and current value to the LAN 4 as accident information each time.

FIG. 2 shows a processing flow of the computer system 1. First, the control process 12 receives information from the LAN 4 and then determines to which process the information is to be passed (startup process determination 111). The control process 12 determines that the received information is the train information (the train operation management device 2
), The train position monitoring process 1
1 and the received information is the equipment status information (the information transmitted from the equipment monitoring mechanism 3), it is transmitted to the equipment status monitoring processing 13. The train position monitoring processing 11 and the equipment state monitoring processing 13 process the received information, transmit the processing results to the control processing 12, and store them in the corresponding databases. The control process 12 performs a process of notifying the received processing result to the train 23 or outputting a control signal to the substation 31 through the facility monitoring mechanism 3.

FIG. 3 shows a processing flow of the train position monitoring processing 11. When receiving the train information by the start-up process determination 111 of the control process 12, the train position monitoring process 11 determines the train position in the power system based on the train track circuit position information included therein (the train in the power system). Position detection processing 1111). Next, the determined train position (train position information in the power system) and other train information are stored in the train database 14 (train database storage processing 1112).
At the same time, it transmits to the control processing 12.

FIG. 6 shows a configuration example of the train database 14. The train database includes train data 141. Next, an example of the train data 141 will be described. The train number is uniquely assigned to each train of the train 23 and is a number for identifying the train and the traveling direction. The position column indicates the current position of the train in the power system. The speed column indicates the current speed of the train. The column of the train operation state shows the current train operation state (notch state). The column of the train receiving voltage indicates the voltage at which the current train is receiving power. The power consumption column indicates the current power consumption of the train. The substation column indicates the number of the substation that is in charge of the section where the train exists. These data are sequentially updated by train information transmitted from the train 23 to the operation management device 2 at predetermined time intervals, and are always kept at the latest data.

FIG. 4 shows a processing flow of the equipment state monitoring processing 13. The equipment state monitoring processing 13 receives the equipment state information by the start processing determination 111 of the control processing 12,
The equipment state is determined (equipment state determination processing 1131). Next, the determined equipment state is stored in the equipment database 16 (equipment database storage processing 1132) and transmitted to the control processing 12. The information transmitted to the control processing 12 includes the transmission power amount of each substation at that time. If the equipment state information received by the equipment state monitoring processing 13 is the accident information (short-circuit current value, occurrence time), it is transmitted to the control processing 12 as it is.

FIG. 8 shows an example of the facility database 16. The substation name is a name uniquely assigned to each substation of the substation 31, and is a name for identifying the substation. The substation number is stored in the short-circuit accident database 15
This is the same number as the substation number of No. 1. The device number is a number uniquely assigned to each device in the substation, and is a number for identifying a device in the substation. The name column stores a name uniquely assigned to each device, and the status column stores the current device status. Current values are stored in the voltage and current columns, respectively.

FIG. 5 shows a processing flow of the control processing 12.
The control processing 12 includes the train position detection processing 11 in the electric power system.
11 and the processing result of the equipment state judgment processing 1131 are received, and when there is a change in the train position, train position change information is generated.

Next, it is selected which of the accident determination processing 1142 and the system control determination processing 1144 is to be performed, and the information is transmitted to the selected side (processing determination 1141). If the processing result of the received equipment state determination processing 1131 is the accident information, the accident determination processing 1142 is selected. Otherwise, the system control determination processing 1144 is selected.

When the accident determination processing 1142 is selected,
Proceeding to an accident determination process 1142, the result of the train position detection process 1111 in the power system and the facility state determination process 113
It is determined based on the result of 1 (in this case, accident information) whether or not a short circuit has occurred. If it is determined that the short-circuit accident, the short-circuit position, that is, the short-circuit position in the power system is calculated, this position is compared with the position of the train in the power system in the train database, and it is determined whether there is a relationship between the short-circuit accident and the train. You. If the train is passing through the short-circuit position when the short-circuit accident occurs, it is determined that there is a relationship between the short-circuit accident and the train. In addition, it is also determined whether or not there is a train in a power transmission section including a short-circuit position (a section where power failure has occurred due to a short-circuit accident). When it is determined that there is a train in the power transmission section including the short-circuit position, the process proceeds to the accident recovery support processing 1143, and it is proposed that the train is in the power transmission section including the short-circuit position and that restoration is performed from the section in which the train exists. This proposal is based on a not-shown display means (for example, a CRT) of the computer system 1.
Screen).

Next, the process proceeds to the train communication determination process 1146, which describes the type of accident that has occurred (in the case of an overhead line short-circuit accident, a power outage at a substation, etc., in the case of an overhead line short-circuit accident, etc.) Regarding the inspection instruction for the train when it is determined, an appropriate one is selected from preset messages.

When an appropriate one is selected as the contact information to the train, the process proceeds to the train contact process 1147, and the selected contact information is transmitted to the train 23 via the LAN 4 and the train operation management device 2. The train 23 is provided with a CRT display device that displays the received contact information in the driver's seat and the conductor's compartment.

When the system control determination process 1144 is selected, the result of the train position detection process 1111 in the electric power system (in this case, train information including train position change information).
Then, based on the result of the equipment state determination processing 1131, the number of trains present in the power system section and the amount of power supplied from the substation are determined according to the operation status (system control determination processing 1144). As a result of the power amount determination, when it is determined in the system control determination processing 1144 that control to the substation (control of increasing or decreasing the amount of transmission) is necessary, a control signal to the corresponding substation is generated, and Is output to the equipment monitoring mechanism 3 (system control processing 1145).

Then, the process proceeds to a train communication determination process 1146, where a system control determination process 1144 and a system control process 1145 are performed.
The information generated in each process is received, and it is determined whether detailed information on the power system should be notified. At the same time, it is determined from the power system state (surplus transmission capacity), the number of trains existing in the section, and the operation state whether or not the power consumption limitation (speed limitation or cooling / heating operation limitation) instruction should be notified to the train. . When it is determined that contact is necessary, the contact information for the train is selected from the preset messages.

When the message is selected, the communication information to the train is transmitted to the train operation management device 2 via the LAN 4 (train communication processing 1147).

The input / output data of the control processing 12 is stored in the log database 15 together with the time. The log database 15 includes a short-circuit accident database 151 that stores information at the time of occurrence of an accident. Next, an example of the short-circuit accident database 151 will be described with reference to FIG. The substation number is a number uniquely assigned to each substation of the substation 31, and is used to identify a substation in a section where an accident has occurred. If the train is running at the accident point when the accident occurred, the column of the train number stores the train number. The date and time column stores the date and time when the accident occurred. The accident point column stores the position where the accident occurred. The accident content column stores information such as the content of the accident, the presence / absence of a train, and the breaking current at the time of the accident.

In this embodiment shown in FIG. 1, the train position monitoring processing 11, the control processing 12, and the equipment state monitoring processing 13
Although each component such as the train transmission / reception mechanism 21 and the train position detection mechanism 22 is described as being separate hardware, the train position monitoring processing 11 and the control processing 12
In addition, the equipment state monitoring process 13 may be configured with one piece of hardware, and the train transmission / reception mechanism 21 and the train position detection mechanism 22 may be formed with one piece of hardware. Also, some of these components may be configured by software. Further, the position detection function of the train position detection mechanism 22 may be performed by the train position monitoring processing 11.

According to the above-described embodiment, it is possible to control the output of the substation so that the transmission power amount corresponds to the number of trains and the operation state existing in the transmission section in charge of the substation. In addition, it is possible to limit the operation state of the train so that the power consumption is adjusted to the capacity of the substation. In addition, when an accident related to the power system occurs, it is possible to detect whether or not the train is related more accurately than before, enabling early recovery of the accident and providing the train with accident information related to the power system. By doing so, it becomes easier for the driver to see the prospect of accident recovery, and stable train operation becomes possible.

[0031]

According to the present invention, in an electric railway power system monitoring control, it is possible to more accurately detect whether a train is involved when an accident related to the electric power system occurs, and the recovery of the accident can be quickly performed. It becomes possible and stable operation of the train becomes possible by providing the train with the accident information on the power system.

[Brief description of the drawings]

FIG. 1 is a system schematic diagram showing an embodiment of the present invention.

FIG. 2 is a procedure diagram showing an example of a processing flow of the computer system according to the embodiment shown in FIG.

FIG. 3 is a procedure diagram showing an example of a processing flow of a train position monitoring process of the embodiment shown in FIG.

FIG. 4 is a flowchart illustrating an example of a processing flow of an equipment state monitoring process according to the embodiment illustrated in FIG. 1;

FIG. 5 is a flowchart illustrating an example of a processing flow of a control process according to the embodiment illustrated in FIG. 1;

FIG. 6 is a conceptual diagram showing an example of a train database according to the embodiment shown in FIG.

FIG. 7 is a conceptual diagram showing an example of a log database according to the embodiment shown in FIG.

FIG. 8 is a conceptual diagram showing an example of an equipment database according to the embodiment shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 computer system 2 train operation management system 3 equipment monitoring mechanism 4 local area network 11 train position monitoring processing 12 control processing 13 equipment state monitoring processing 14 train database 15 log database 16 equipment database 21 train transmission / reception mechanism 22 train position detection mechanism 23 train 31 substation

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Teruhiro Hirose 5-2-1, Omika-cho, Hitachi City, Ibaraki Prefecture F-term (reference) 5H161 AA01 BB03 CC01 GG02 GG12 GG12 GG22 JJ01 JJ29 MM12

Claims (3)

[Claims] 1. A procedure for constantly grasping a train position on a track with an error of several tens of meters or less, a procedure for converting the train position on the track to a train position in an electric power system, and sequentially updating and maintaining the train position; A procedure for detecting a position on the power system where a power system accident such as an overhead line short circuit accident has occurred, and comparing the occurrence position with the position of the train in the power system at the time of the occurrence of the accident, the train in the power transmission section where the accident has occurred A method for controlling an electric railway power system, comprising: a procedure of determining the presence / absence of information, and a procedure of transmitting information such as a result of the determination and an instruction based on the result to the train. 2. A train position detecting means for detecting a position of a train on a track at a predetermined time interval with an error of several tens of meters or less, and a train position on the track detected by the train position detecting means in a power system. A power system train position detecting means for converting to a train position, a train database storing train positions in the power system output by the power system train position detecting means, and a power system accident occurrence position detected on the power system,
The power system train position at the time of the occurrence of the accident is read from the train database and compared with the occurrence position, and the presence or absence of a train in the transmission section where the accident occurred is determined using the comparison result. An electric railway power system control device, comprising: control arithmetic means for outputting accident information including the content of the accident and the location of the accident to the train. 3. The electric railway power system control device according to claim 2, wherein the control operation means includes:
When it is determined that there is a train passing the location where the accident occurred at the time when the accident occurred, the train is configured to output a necessary check instruction to the train. Power system controller.