JPH1191414A - Control device for substation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for a substation which controls output voltage of one's own substation by performing an operation of necessary voltage of a feeder section between one's own substation and an adjacent substation. SOLUTION: A line condition storage means 1 stores and outputs a line condition such as a gradient and a station position in a feeder section between one's own substation and an adjacent substation. A train position detecting means 2 outputs its position information by obtaining a position of a train existing in the feeder section between one's own substation and the adjacent substation from a track circuit arranged on the aboveground side. An operation condition judging means 3 judges and outputs an operation condition (power running, coasting and resurrection) in a position of the train by inputting a line condition stored by a line condition storage means 1 and train position information outputted from the train position detecting means 2. A control means 4 performs control and output to a thyristor rectifier 5 arranged is one's own substation by deciding necessary voltage of the feeder section on the basis of the operation condition of the train inputted from the operation condition judging means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control device for a substation.

[0002]

2. Description of the Related Art In a DC railway substation, as a rectifier for converting AC power into DC power, a diode rectifier in which a DC output voltage changes at a fixed ratio according to a load ratio is generally used. In addition, thyristor rectifiers that can control a DC output voltage have been used in order to adapt to train load fluctuations that have become more and more complicated with the increase in the number of vehicles employing electric regenerative braking in recent years.

Conventionally, in the output voltage control of the thyristor rectifier, a method of controlling the DC voltage of the substation to be constant has been adopted in order to reduce the fluctuation of the train line voltage due to the increase or decrease of the train load or the regenerative power.

[0004]

However, in such a conventional control method, the output voltage of the thyristor rectifier is controlled so that the DC voltage of the substation is kept constant. There is a problem that the load on the adjacent substation increases if the falling set value is low.

Accordingly, the present invention has been made to solve the above-described problems, and calculates the required voltage of the power supply section of the substation adjacent to the own substation to calculate the output voltage of the own substation. It is an object of the present invention to provide a substation control device for controlling a substation.

[0006]

In order to achieve the above-mentioned object, a first aspect of the present invention is a line condition storing means for storing line conditions of a feeder section of a substation adjacent to the own substation. And train position detecting means for detecting the position of the train;
From the track conditions stored in the track condition storing means and the train position information detected by the train position detecting means, the operating state determining means for determining the operating state of the train and the operating state determining means are determined. Control means for calculating a required voltage of the feeder section from an operation state of the train and controlling an output voltage of the own substation.

According to a second aspect of the present invention, in the first aspect of the present invention, when the operating state determining means determines that the operating state of the train is regenerative, the control means determines whether or not the train is in a regenerative state. The output voltage of the substation is reduced, and when the operation state of the train is determined to be power running, control is performed to increase the output voltage of the own substation.

According to a third aspect of the present invention, there is provided an operation curve storage means for storing an operation curve of a feeder section of a substation adjacent to its own substation, a train position detection means for detecting a train position, and The position of the train detected by the train position detecting means is
If the deceleration section on the operation curve stored in the operation curve storage means, the operation state of the train is determined to be regenerating, and if the acceleration section, the operation state of the train is determined to be power running, When the operating state of the train is determined to be regenerative, the output voltage of the own substation is reduced, and when the operating state of the train is determined to be power running, the operating state of the own substation is determined. And control means for controlling so as to increase the output voltage at the place.

According to a fourth aspect of the present invention, in the substation control device according to the second or third aspect, the control means includes a plurality of trains in the feeder section of the substation adjacent to the own substation. If the number of trains whose operating state is determined to be regenerative by the operating state determining means is large, control is performed so that the output voltage is reduced, and if the number of trains determined to be power running is large, the output voltage is increased. The feature is.

According to a fifth aspect of the present invention, in the third aspect of the present invention, there is provided a train type determining means for determining a train type of a train existing in the feeder section of a substation adjacent to the own substation. Provided, the operating curve storage means stores an operating curve for each train type, the operating state determining means, based on the train type determined by the train type determining means,
The operation state of the train is determined using the operation curve of the corresponding train type stored in the operation curve storage means.

According to a sixth aspect of the present invention, in accordance with the second or third aspect of the present invention, a vehicle type is detected by detecting a type of the train existing in a feeding section of a substation adjacent to the own substation. Determine the performance, by the operating state determination means,
Among the trains whose operation state is determined to be regenerative, when it is determined that the vehicle performance is a train having no regenerative brake, the control means performs control to reduce the output voltage of the own substation. Vehicle performance judging means for preventing the vehicle performance.

According to a seventh aspect of the present invention, in the second or third aspect, current value output means for outputting a current value at the time of regeneration or power running of the train, and the own substation And a train line resistance calculating means for calculating a train line resistance between the position of the train detected by the train position detecting means, the control means, the current value output by the current value output means and the current value An output voltage value is calculated from the line resistance calculated by the line resistance calculating means, and the output voltage of the own substation is controlled based on the output voltage value.

According to an eighth aspect of the present invention, in accordance with the seventh aspect of the present invention, there is provided a voltage setting range storage means for storing a setting range of an output voltage of the substation, and the control means comprises a control unit for calculating the calculated output voltage value. When the voltage exceeds the setting range stored in the voltage setting range storage means, the output voltage of the own substation is controlled based on the voltage value of the upper limit value or the lower limit value of the setting range.

[0014]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of a substation control device according to a first embodiment of the present invention. The line condition storage means 1 stores and outputs line conditions such as a gradient and a station position in a feeding section of a substation adjacent to the own substation. The train position detecting means 2 obtains the position of the train existing in the feeding section of the substation adjacent to its own substation from a track circuit provided on the ground side and outputs the position information. The operating state determining means 3 inputs the line condition stored in the line condition storing means 1 and the train position information output from the train position detecting means 2 and operates the train at the position of the train (power running,
(Coasting, regeneration) is output. The control means 4 determines the required voltage of the feeder section based on the operation state of the train input from the operation state determination means 3 and performs control output to the thyristor rectifier 5 provided in its own substation.

Next, the operating state determining means 3 will be described in detail. FIG. 2 is a diagram showing an example of the line condition stored in the line condition storage means 1. In FIG. 2, train a
Is in a state of climbing an uphill, and the train b is in a state of leaving the station. The train c is on a downhill, and the train d is about to stop at the station. Generally, the trains located at the positions of the trains a and b are in a power running state, and consume power for climbing or accelerating, and trains c and b.
The train located at the position d is in a braking state, and runs with a brake applied to suppress or decelerate the speed increase due to the descending board. Here, if the trains c and d are trains provided with a power regenerative brake (hereinafter referred to as regenerative vehicles), regenerative power generated by the power regenerative brake is supplied (regenerated) to the train line. In addition, the train e existing in a place where the influence on the train speed is small due to a gentle slope or curve or in a position away from the station is often in a coasting state that is neither power running nor regeneration.

The operation state judging means 3 comprises the train position detecting means 2
The position information of the train inputted from the line condition and the line condition inputted from the line condition storage means 1 are collated, and the above-mentioned rule, that is, immediately after an uphill or a station, "power running", downhill or just before a station. For example, the operation state of the train is determined and output based on “regeneration” and “other coasting” otherwise.

Next, the control means 4 will be described in detail. FIG. 3 is a diagram illustrating power supply to a substation and a train. In FIG. 3, the panta point voltage VPA of the powering vehicle A can be expressed by the following equation.

[0018]

VPA = VSS−IA × RA where VSS: output voltage of substation IA: current consumed by powering vehicle A RA: resistance of train line from substation to powering vehicle A (including rail resistance) It is. Further, the punter point voltage VPB of the regenerative vehicle B can be expressed by the following equation.

[0019]

VPB = VSS + IB × RB where IB is a regenerative current supplied by the regenerative vehicle B RB is a resistance of a train line (including a rail resistance) from the substation to the regenerative vehicle B.

In other words, the voltage at the panta point of the powering vehicle A increases in proportion to the distance from the substation, and the voltage drop due to the resistance RA of the power line increases. Therefore, the voltage becomes low, which may hinder the operation of the train. In order to prevent this problem, the substation sending voltage VSS may be made higher than a reference value (or a rated voltage) from Equation 1. Further, the voltage at the panta point of the regenerative vehicle B increases in proportion to the distance from the substation because of the increase in the power line resistance RB. Further, it is difficult to provide power to the powering vehicle A on the opposite side of the substation. In order to prevent this problem, the substation sending voltage VSS may be set lower than the reference value (the rated voltage may be used) according to Equation 2.

According to the above-mentioned rules, the control means 4 sets the output voltage higher than the reference voltage if the train operating state input from the operating state determination means 3 is power running, lowers the reference voltage if regenerating, and coasts the running state if regenerating. For example, a control output is provided to the thyristor rectifier 5 so as to maintain the reference voltage.

In the case where a plurality of trains exist in the feeder section between the own substation and the adjacent substation, the control means 4
Controls the output voltage to be lowered when the operation state of each train is comprehensively regenerative as shown in FIG. 4, and to be increased when the power running is comprehensive as shown in FIG.

By performing the control in this manner, the output voltage of the substation is controlled in accordance with the operating condition of the train, so that the drop and rise of the train punter point voltage are reduced, and the train operation is stabilized and the regeneration is improved. Electric power can be used effectively.

Next, a second embodiment of the present invention will be described. FIG. 6 is a block diagram of a control device for a substation showing a second embodiment of the present invention. An operation curve storage means 6 is provided in place of the line condition storage means 1 in FIG. It is one with improved accuracy. The operation curve storage means 6 stores the operation curves of the power supply section of the substation adjacent to the own substation. The operation curve represents an operation pattern (acceleration, deceleration, coasting) on the operation route. Then, the operating state determining means 3 includes the train position detecting means 2
The train position is judged from the information of the train, and the train operation state is judged as "regeneration" if the position is a deceleration section on the operation curve stored in the operation curve storage means 6 and "power running" if the acceleration section. I am trying to do it. Other controls are the same as in the first embodiment. With this configuration, in the present embodiment, it is possible to determine the operating state in the deceleration section and the acceleration section that cannot be determined only by the information on the station position and the gradient, and control can be performed more accurately than in the first embodiment. it can.

Next, a third embodiment of the present invention will be described. FIG. 7 is a block diagram of a substation control device according to a third embodiment of the present invention, in which train type determination means 7 is added to the second embodiment shown in FIG. The accuracy of No. 3 is improved. The train type determining means 7 obtains the type of the train (type of limited express, express, normal, etc.) existing in the feeding section of the substation adjacent to the own substation from the ground child or the like, and outputs the train type information. . The operating curve storage means 6 stores an operating curve for each train type, and the operating state determining means 3 stores a required operating curve based on the train type information input from the train type determining means 7. The operating state of the train is determined with reference to the means 6. Other controls are the same as in the first or second embodiment.

FIG. 8 is an example of an operation curve. In the example of FIG. 8, at the position A, which is just before the station, the operating state of the ordinary train is deceleration, but the operating state of the express train is acceleration.
In such a case, in the first embodiment, since the position A is in front of the station, the operating state determining means 3 determines the operating state of the train as “regeneration”. In the present embodiment, however, the operating state of the train is If the train type information input from the train type determination means 7 is “normal”, it can be determined as “regenerative”, and if the train type information is “express”, “power running” can be determined. Thus, in the present embodiment, more accurate control can be performed according to the train type.

Next, a fourth embodiment of the present invention will be described. FIG. 9 is a block diagram of a control device for a substation showing a fourth embodiment of the present invention. The vehicle performance judgment means 8 is added to the second embodiment shown in FIG. It is something which raised. The vehicle performance judging means 8 obtains the type (model) of the train existing in the feeding section of the substation adjacent to the own substation from the ground child or the like, searches the type information stored therein, and searches for the type of the vehicle. Is output as a result whether or not is a regenerative vehicle. The control unit 4 refers to the result of the vehicle performance determination unit 8 when the operation state of the train input from the operation state determination unit 3 is “regeneration”, and “regeneration” if the train is a regenerative vehicle; If it is a non-regenerative vehicle, it is treated as “coasting”.
Other controls are the same as in the second embodiment. By controlling in this manner, it is possible to prevent a determination that the train is not regenerating and prevent the output voltage of the substation from being reduced when the train that is not a regenerative vehicle is performing deceleration operation. Although this embodiment has been described based on the second embodiment, the same effect can be obtained by adding the vehicle performance determining means 8 to the first embodiment.

Next, a fifth embodiment of the present invention will be described. FIG. 10 is a block diagram of a control device for a substation showing a fifth embodiment of the present invention. In the second embodiment shown in FIG. The resistance calculating means 10 is added to improve the accuracy of the control means 4. The vehicle performance judging means 8 obtains the type (model) of the train existing in the feeding section of the substation adjacent to the own substation from the ground child or the like, searches the type information stored therein, and searches for the type of the vehicle. Output vehicle performance information. The current value output means 9 inputs the operation state of each train from the operation state judgment means 3 and the vehicle performance of the train from the vehicle performance judgment means 9, respectively. A current value is output, and if the operation state is power running, a power running current value required by the train is output. The train line resistance calculating means 10 receives the position information of each train from the train position detecting means 2 and calculates the distance between its own substation and each train. Next, by referring to the resistance value per 1 km of the train line stored inside the train line resistance calculating means 10, the train line resistance value from its own substation to each train position is calculated and output. The control means 4 inputs the powering or regenerative current value and the power line resistance value from the current value output means 9 and the power line resistance calculating means 10, respectively, obtains the substation output voltage by the following equation, and controls the thyristor rectifier 5 Perform output.

[0029]

(Equation 3) Here, VSS: sent voltage of substation Vd: reference voltage (may be rated voltage) In: current of train n (polarity: powering = positive, regenerative = negative) Rn: resistance of train line from substation to train n (Including rail resistance), and n (=> 1) represents the number of trains existing in the feeding section of the substation adjacent to the own substation. By performing such control, more accurate output control of the substation can be performed. Although the present embodiment has been described based on the second embodiment, a vehicle performance determination unit 8, a current value output unit 9, and a trolley line resistance calculation unit 10 are added to the first embodiment. Can obtain the same effect.

Next, a sixth embodiment of the present invention will be described. FIG. 11 is a block diagram of a substation control device according to a sixth embodiment of the present invention, which is obtained by adding a voltage setting range storage unit 11 to the fifth embodiment shown in FIG. The voltage setting range storage means 11 stores and outputs a voltage setting range. The control means 4 calculates the output voltage of the substation from the information of the current value output means 9 and the information of the electric wire line resistance calculating means 10 and compares it with the information of the voltage setting range storage means 11. As a result of the comparison, when the calculation result exceeds the upper limit value or the lower limit value of the settling range, the control means 4 performs control output to the thyristor rectifier 5 so as to output the voltage of the upper limit value or the lower limit value of the set range. By performing control in this way,
Control can be performed to the maximum and minimum that can be output from the substation.

[0031]

As described above, according to the present invention, the required voltage in the feeding section of the substation adjacent to the own substation is calculated to control the output voltage of the own substation. A control device can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a control device of a substation showing a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of line conditions stored in a line condition storage unit.

FIG. 3 is a diagram illustrating power supply to a substation and a train.

FIG. 4 is a diagram illustrating a case where the operation state of a plurality of trains has a large amount of regeneration overall.

FIG. 5 is a diagram illustrating a case where a plurality of trains have a large number of power runnings overall.

FIG. 6 is a configuration diagram of a control device of a substation showing a second embodiment of the present invention.

FIG. 7 is a configuration diagram of a substation control device according to a third embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of an operation curve.

FIG. 9 is a configuration diagram of a control device of a substation showing a fourth embodiment of the present invention.

FIG. 10 is a configuration diagram of a control device for a substation showing a fifth embodiment of the present invention.

FIG. 11 is a configuration diagram of a control device for a substation showing a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Track condition storage means 2 ... Train position detection means 3 ... Operation state judgment means 4 ... Control means 5 ... Thyristor rectifier 6 ... Operation curve storage means 7 ... Train type judgment means 8 ... Vehicle performance judgment means 9 ... Current value output means 10 ... Train line resistance calculation means 11 ... Voltage setting range storage means

Claims (8)

[Claims] 1. Line condition storage means for storing line conditions of a feeder section of a substation adjacent to its own substation, train position detection means for detecting a train position, and stored in the line condition storage means. Operating state determining means for determining the operating state of the train from the track conditions and the position information of the train detected by the train position detecting means; and from the operating state of the train determined by the operating state determining means, A control unit for calculating a required voltage in a feeder section and controlling output voltage of the own substation. 2. The substation control device according to claim 1, wherein the control unit determines a state of the substation when the operation state of the train is determined to be regeneration by the operation state determination unit. A control device for a substation, wherein the output voltage is reduced, and when the operation state of the train is determined to be power running, control is performed so as to increase the output voltage of the own substation. 3. An operation curve storage means for storing an operation curve of a feeder section of a substation adjacent to its own substation, a train position detection means for detecting a train position, and a train position detected by the train position detection means. If the position of the train is a deceleration section on the operation curve stored in the operation curve storage means, the operation state of the train is determined to be regenerating, and if the position is an acceleration section, the operation state of the train is determined to be power running. When the operating state of the train is determined to be regenerating, the output voltage of the own substation is reduced, and when the operating state of the train is determined to be power running, And control means for controlling the output voltage of the substation to increase. 4. The substation control device according to claim 2, wherein the control unit performs the operation when a plurality of trains exist in the feeder section of a substation adjacent to the own substation. A substation characterized by controlling the output voltage to be lowered when the number of trains whose operation state is determined to be regenerated by the state determination means is large, and to increase the output voltage when the number of trains determined to be power running is large. Control device. 5. The substation control device according to claim 3, further comprising: a train type determining unit configured to determine a train type of a train existing in the feeder section of the substation adjacent to the own substation, The operating curve storage means stores an operating curve for each train type, and the operating state determining means, based on the train type determined by the train type determining means, stores a corresponding train type stored in the operating curve storing means. A substation control device, wherein the operation state of the train is determined using the operation curve of the substation. 6. The substation control device according to claim 2, wherein a vehicle type of the train existing in a feeding section of a substation adjacent to the own substation is detected to determine vehicle performance. When the driving state is determined by the driving state determining unit to be a train having no regenerative brake among the trains whose operating state is determined to be regenerative, the control unit determines whether or not the own power transmission is performed. A control device for a substation having a vehicle performance determining means for preventing a control for lowering an output voltage of a substation. 7. The control device for a substation according to claim 2 or 3, wherein current value output means for outputting a current value at the time of regeneration or power running of the train, the own substation and the train A train line resistance calculating means for calculating a train line resistance between the position of the train detected by the position detecting means, and the control means, wherein the current value output by the current value output means and the train line resistance A control device for a substation, wherein an output voltage value is calculated from a train line resistance calculated by a calculation means, and an output voltage of the own substation is controlled based on the output voltage value. 8. The substation control device according to claim 7, further comprising: a voltage setting range storage unit configured to store a setting range of an output voltage of the substation, wherein the control unit calculates the output voltage value as the voltage. Controlling the output voltage of the own substation based on the voltage value of the upper limit value or the lower limit value of the settling range when exceeding the settling range stored in the settling range storage means. apparatus.