JPS6033134A - Electric railway feeder sectioning device - Google Patents

Abstract

PURPOSE:To securely carry out power running and regenerating by providing two feeder lines between feeder lines for adjacent substations through three sections and connecting a diode and a thyristor and a Zener diode to each of both side sections respectively. CONSTITUTION:Feeder lines 3, 4 are provided between feeder lines 2, 5 for adjacent substations 1a, 1b through sections 6a-6c, and diodes 7a, 7b thyristors 11a, 11b for a regenerating currnet, and Zener diodes 12a, 12b are connected both between feeder lines 2, 3 and between feeder lines 4, 5 respectively. Thereby, in whichever position among the feeder lines 2-5 and sections 6a-6c an electric car 8 may be positioned, a power-running power can be securely supplied while a regenerating power can be efficiently regenerated. Also, the reliability of the device can be increased by means of a simple circuit consisting of thyristors, Zener diodes, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a room division device for an electric railway using direct current feeding.

In electric railways that use direct current feeding, sections are provided to separate rooms, but if the electric car's pantograph straddles the sections, this section will become short-circuited. At this time, if an accident occurs in one of the healthy military sections, the fault current is supplied from the other healthy military section via the electric car, so not only does the accident current stagnate in the electric car, but also the healthy military section This will also lead to power outages in the area. To keep this in mind, conventional room division devices using diodes, such as the one shown in FIG. 1, have not been used in the past. In Figure 1, /'
+/b are two DC substations adjacent to each other.

The output side of this substation /a is connected to the feeder line, and the output side of the substation /ll is connected to the feeder line! It is connected to the. A feeder wire J is provided in series with the feeder wire J via section 6a.
1. Feeder wires are connected in series to the feeder wire S via a section tO. When the feeder line 3 is connected, the electric wire V is provided in series through the section IA. Reference numeral 7a designates a ninth diode whose anode side is connected to the feeder wire J and whose cathode side is connected to the feeder wire J.

7b is connected to the anode side wire j and also connected to the cathode side wire j and is a second diode O.
A indicates the active section of substation/a, B indicates the active section of substation/b, and -10i + 01 indicates the intermediate section of the section.
r is an electric car and has nine pantographs Pa and Fb electrically connected to each other inside. In the figure, electric car t is passing through section A from military section A toward section middle section 01, and Pandagraph Pa is in contact with the feeder line. b shows the state in which the device is in contact with the feeder line J. Next, the operation of the device configured as described above will be described. First, electric car g has section t
If an accident occurs in military section A while passing through part a,
Section A is from unsound military section B to accidental military section A.
The accidental current was stopped by b and the current flowed! Nothing better.

Next, when the electric car l enters the section intermediate section CI, power to the electric car in the healthy state ■ is supplied to the zero order through the path of substation/a → feeder line 2 → diode 7a- + electric car When the electric car 1 passes through section 4b, the pantograph 9a is connected to the feeder line J. If an accident occurs in military section A because b is in contact with the feeder @q,
No health! The fault current that attempts to flow from feeder section B to feeder section A is blocked by section 6a and diode 7a, so that the fault current from feeder section B to feeder section A is blocked by section 6a and diode 7a.
(not shown) does not flow. In this way, the fault current to the adjacent section is transmitted through section 4a and diode 7a.

Or because it is necessarily blocked by section 4b, or section 4ok and diode 7b, electric car #1Ft
No fault current will flow between adjacent military sections via feeder lines 3. If an electric car exists under μ and that electric car performs regenerative operation, the regenerative current will be blocked by diodes 7a, 7bTh and sections Aa, 4Q, making it impossible to perform the regenerative side @. 0 In order to eliminate these drawbacks, in the past, the voltage of each feeder line divided into sections, for example, was constantly monitored using a voltage detector, etc., and the detection signal was used to control the electric car's forward operation. It is important to note that a QFF system will be adopted that will determine whether the electric vehicle is in the current state or in the regenerative operation state, and will control the selection of the electric car's drive or regenerative operation depending on the operating state of the electric vehicle. However, in order to implement the above-mentioned feeding system, it is necessary to use a voltage detection device, a discrimination device that discriminates the driving state a' of the electric vehicle based on the detection signal thereof, and a selection control of the first regeneration of the electric train based on the output signal of this discrimination device. Since a control device and the like must be installed to perform the operation, the number of components increases and the overall configuration of the electrical device becomes extremely complex. This causes various problems such as decreased reliability of the device, increased cost, and a large amount of labor required for maintenance and inspection.

The present invention has been developed in view of the above points, and it is possible to constantly grasp the operating condition of an electric vehicle with a simple circuit configuration, and to ensure that electric power is supplied to the electric vehicle according to the operating condition. It is an object of the present invention to provide a general-purpose electric power feeding distribution device that can effectively regenerate regenerative power generated by an electric vehicle.

The configuration of the present invention is that fL is connected to the DC output side of the first substation.
t first feeder line and adjacent to the first substation - I
Connect the IC between the second feeder wire, the first feeder wire, and the second feeder wire connected to the DC output side of the second substation.
If the third feeder line is divided into sections and the anode side is connected to the first feeder line, then l
A first diode whose cathode side is connected to the third feeder wire, and a second diode whose anode side is connected to the second feeder wire and whose cathode side is connected to the third wires m and mt. Be prepared. In a feeding distribution device for electric railways, a first switching control element is connected between the first and third feeding wires for flowing a regenerative current, and a cathode side is connected to the @8 feeding wire, and an anode side is connected to the @8 feeding wire. Connected to the control terminal of the first switching control element
a first Zener diode, an m2 switching control element connected between the second hexagram and the eighth feeder line for flowing a regenerative current, and a cathode side connected to the third feeder line, and an anode side power ; said second switching +
A second Zener diode connected to the control terminal of the first control element is provided, and when the electric vehicle existing under the electric wire is in a running state, the first:t? and second
When power is supplied from the substation through the first and second feeder diodes, and the electric car located under the third feeder performs regenerative operation, the voltage of the first and second feeder When the breakdown voltage of the second Zener diode is exceeded, an ignition current is supplied to the control terminals of the first and second switching control elements, thereby transferring the regenerative power of the electric vehicle to the first and second switching control elements. It is characterized in that regeneration is made to the first and second substations via a switching control element.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, the same parts as in FIG. 1 are shown with the same reference numerals, and their explanation will be omitted. A switching control element, for example a thyristor//a of the polarity shown in the drawing, is connected in parallel to the first diode 7a. The feeder line J is connected to the cathode of a Zener diode/2a. The anode of this Zener diode /2a is a resistor /jai
The breakdown voltage of the Zener diode /2a connected to the gate of the thyristor //a is made equal to, for example, the regenerative voltage of an electric car. A switching control element, for example, a thyristor //b with the illustrated polarity, is connected in parallel to the @2 diode 7h. The cathode of a Zener diode/cob is connected to the feeding power source. The anode of this Zener diode /2b is connected to the gate of the thyristor //1) via a resistor /jb'5. The breakdown voltage of the Zener diode/Ub is set equal to, for example, the regenerative voltage of the electric vehicle.

Next, the circuit constructed as described above can operate at full speed. It is now assumed that electric car r is moving in the direction from feeder section A of substation/a to feeder section B of substation/b while driving in a row. Here, the electric car t exists in the section 6a, and for example, as shown in the figure, the pantograph 2a is connected to the feeder line
pantograph? Suppose that b is in contact with feeder wire J. In this case, electric power is supplied to the electric car t from the substation /a via the feeder line 2, and power is also supplied from the substation /a via the feeder line 2 and the diode 7a. . Next, when the electric car t moves and is located under the feeder line J (not shown), electric power is supplied to the electric car t from the substation /a via the feeder line 2 and the diode 7ILtl-. Next, the electric car t moves to the section jb, and for example, the electric car t moves to the section jb, and for example,
Make sure that the pantograph 2b comes into contact with the wires (not shown). At this time, the electric car r is supplied with power from the substation /a via the feeder line 2 and the diode 7a, and is also supplied with power from the substation /b via the feeder line WtIlsj and the diode 7b. .

Next, when the electric car t moves and is located under the feeder line l (not shown), electric power is supplied to the electric car t from the substation /b via the feeder line j and the diode 7bl. Furthermore, the electric car t moves to the section to, and for example, a pantograph? It is assumed that the pantograph 2b touches the feeder line j (not shown) on the feeder line j (not shown). /b electric wire S
Power is supplied through the diode 7b.

In addition, electric car r goes from substation/11 feeding section B to substation/a.
When moving in the direction of TI section A, power is supplied in the same manner as described above.

As mentioned above, an electric car is connected to the electric wire 2. The electric vehicle t can be operated smoothly since power can be reliably supplied no matter where it is located in sections 4a, 4b, and 4c. I can do 731 things.

(Left below) Next, the electric car and substation/a go from military section A to substation/b.
A case will be explained in which the vehicle is moving in the direction of zone B while performing regenerative operation. Ikei Electric Car Zaga Section Av
For example, as shown in the figure, the pan tag 279a
It is assumed that the pantograph 9b is in contact with the feeder wire 3 and the feeder wire 3, respectively.

In this case, the voltage of the feeder line 3 increases due to the regenerative voltage of the electric vehicle, and this increased voltage is transferred to the Zener diode/Ja
Since the breakdown voltage exceeds the breakdown voltage of , ignition '1! The current flows and thyristor //a is fired. Therefore, the regenerated power of the electric car g is regenerated to the substation /a via the feeder line 3, the thyristor /la and the feeder line 2, and is also regenerated to the substation /a via the feeder line 2. . Next, if the electric car l moves and is located under its own power line 3 (not shown), the thyristor //IL is fired for the same reason as above, so the regenerative power of the electric car g is transferred to the feeder line 3, It is regenerated to the substation /a via the thyristor //a and the feeder line 2. Next electric car t; 61 section a
Move in part 1 of b, for example, to the nokuntagraph qa wire 3, nokuntagraph? b751@Ill! 4' (not shown). In this case, the voltage of feeder line q increases by 1 due to the regenerative voltage of the electric vehicle, and this increased voltage exceeds the breakdown voltage of Zener diode l and b, so that An ignition current flows through the electric wire DA, the Zener diode /2b and the resistor /J t+ t- to the gate of the cylindrical star//1), and the cyrisk ii b is ignited. Therefore, the regenerated power of the electric vehicle is regenerated to the substation /b via the feeder line DA, the thyristor //b, and the feeder line 5. Also, at this time, the feeder line 3 is
As the voltage of
Substation/a via thyristor//a and feeder line
It is also regenerated. Next, when the electric car ♂ moves and is placed under the feeder line (not shown), thyristor //b is fired for the same reason as above, so the regenerative power of the electric car is transferred to the feeder line q, thyristor//b. /b and is regenerated to substation /b via feeder line S. Furthermore, electric car g is in section t
It is assumed that the pan tag 27 moves in part 1 of O, and for example, the pan tag 27 a contacts the feeder wire DA, and the pantograph b contacts the feeder wire S (not shown). In this case, thyristor //1) is fired for the same reason as above, so the regenerated power of electric car g is regenerated to substation /b via feeder line da, thyristor //b, and feeder line j. , substation/ via feeder line j
b. Electric car g is at substation/b is military section B
When the vehicle moves from the substation/a toward the military section A, power regeneration is performed in the same manner as described above. q, j and sections A a , t b , A o (D to Q
Since electric power can be reliably regenerated even if it exists in the D portion, the regenerated electric power can be used effectively without loss.

Next, another embodiment of the present invention will be described with reference to FIG. In FIG. 3, the same parts as in FIGS. 1 and 2 are indicated by the same reference numerals, and their explanation will be omitted. Figure 3 shows the second
This is applied to a military division device for electric railways that divides the feeder line t between substations /a and /b in the figure into two sections ja and jo. In Figure 3, between the feeder wire and the feeder wire S, feeder wire 3 is inserted through sections a and b0.
1 is provided. This feeder line? 1 constitutes a section intermediate section C. The cathodes of the diodes 7a and 7b, the anodes of the thyristors //a and //b, and the cathodes of the Zener diodes /Za and /2b are each connected to a feeder line 31. Next, the operation of the circuit configured as described above will be described.

1 Electric car g is from substation/a to military section A to substation/b
It is assumed that the vehicle is moving in the direction of section B while powering. Here, electric car j exists in section Aa, and for example, as shown in the figure, pantograph L? It is assumed that a is in contact with the feeder wire 9 and a pantograph 9b is in contact with the feeder wire 31. In this case, electric power is supplied to the electric car g from the substation /a via the feeder line, and at the same time
Power is supplied from substation a via feeder line j and diode 7a, and power is further supplied from substation /b via west line j and diode 7bf.

Next, assuming that the electric vehicle moves and is located under the incoming power line 31 (not shown), this electric vehicle is supplied with electric power from the substation/a via the feeder line C and the diode 7a, and at the same time Electric power is supplied from point /b through feeder line j and diode 7bt-.Next, electric car ♂ moves to section O at part 1, and for example, pantograph Pa is applied to feeder line 3', Assume that each contact is made with electric wire j (not shown).At this time, electric power is supplied to electric car t from substation /b via feeder line, tt-, and electric power is supplied to substation Q (/b) through the feeder line Ii9. !3゛ and diode 7bi, and further power is supplied from Kudensho/a through feeder line λ and diode 7at-.The electric car g is connected to substation 75i/a.
In the case of moving from the hard zone B of b to the hard zone A of substation/a, power is supplied in the same manner as described above. As above, electric car zagaki electric wire-2, 3',
! and since power can be reliably supplied to any part of section Ja, 70, electric vehicle g can perform smooth power operation.

Next, electric car g moves from substation/a to military section A to substation/b
A case will be explained in which the vehicle is moving in the direction of zone B while performing regenerative operation. 1 electric car g is section 4a
For example, as shown in the diagram, there is a pantograph 9a, and a pantograph 11.2. Suppose that b is in contact with the feeder wire 3'.

In this case, the voltage of the feeder line 3' increases due to the regenerative voltage of the electric car g, and this increased voltage is transferred to the Zener diode/J.
Since the breakdown voltage of a is exceeded, an ignition current flows to the gate of thyristor //a through the feeder line, yl, Zener diode /Ja and resistor /JILt-, and the thyristor //a
is fired. Also, at this time, the increased voltage of the feeder wire 31 exceeds the breakdown voltage of the Zener diode, 2t), so a point is applied to the gate of the thyristor //l) via the feeder wire 311 Zener dimate /λb and resistor /3bt. An arc current flows and thyristor //b is fired. Therefore, the regenerative power of the electric car g is generated by the feeder line 31, thyristor //
It is regenerated to the substation/a via the feeder line J' and the feeder line JQ, and is also regenerated to the substation/a via the own power line j', the thyristor 71b, and the feeder line j. b. Next, if the electric car ♂ moves and is located under the incoming electric wire 3+ (not shown), the thyristor //a and the thyristor //b are fired for the same reason as above, so the regenerative power of the electric car is generated. Substation PJr/ via feeder line 31, thyristor//a and feeder line
In addition to being regenerated by a, the feeder line, ? 1. Regenerated to substation /b via thyristor //b and feeder line S.

Next, the electric car moves in part 1 of section Ao, and for example, the pantograph 9a is attached to the electric wire 31, and the pantograph 9b
It is assumed that each of them has contacted the brachiden aS (not shown). In this case, for the same reason as above, thyristor//a and one! lI-
Since iris iris ii b is ignited, the regenerative power of electric car l is transferred to feeder line 3', thyristor //1) and feeder line 3f.
It is regenerated to the substation /b via the feeder line j'
The power is then regenerated to the substation /b, and further regenerated to the substation /a via the feeder line 31, the thyristor //a, and the feeder line. Note that power regeneration is performed in the same manner as described above when the electric car ♂ moves from the active section B of the substation/b to the active section A of the substation/a. Electric car g as above
Gaki electric wire, 2.3',! Moreover, since electric power can be reliably regenerated regardless of where the regenerated electric power is present in sections Aa and Aa, the regenerated electric power can be used effectively without loss.

(Left below) As described above, according to the present invention, the first feeder line connected to the DC output side of the first substation and the DC output of the second substation provided adjacent to the first substation a second feeder line connected to the side, a third feeder line provided in sections between the first feeder line and the second feeder line, and an anode side connected to the first feeder line; a first diode whose cathode side is connected to the third feeding wire; a second diode whose anode side is connected to the second feeding wire and whose cathode side is connected to the third feeding wire;
and a first switching control element connected between the first switching control element and the third feeding wire, the cathode side being connected to the third feeding wire, and the anode side being connected to the second and third switching control elements of the first switching control element. a second switching control element connected between the feeder lines for flowing regenerative current; and a second zener whose cathode side is connected to the third feeder line and whose anode side is connected to the control terminal of the second switching control element. Since the electric car is equipped with a diode, it is possible to grasp the operating status of the electric car no matter where the electric car is located on the first feeder line, the second feeder line, the third feeder line, or the seventh line. At the same time, it is possible to reliably supply power or to effectively regenerate regenerated power depending on the operating state. In addition, since it is constructed with simple circuits such as the first and second switching control elements and the first and second Zener diodes, the reliability of the device is significantly improved and the entire device can be constructed at a low cost. Effects can be obtained.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram showing an example of a conventional army division device;
The figure is a circuit diagram showing one embodiment of the invention, and FIG. 3 is a circuit diagram showing another embodiment of the invention. La, 1b-DC substation, 2, 3.3', 4.5...
Feeder wires, 6a, 6b, 6c...section, 7a. 7b...Diode, 8...2 electric cars, 9a, 9b.
... Pantograph, lla, llb... Sairisk,
12a. 12b...Zener diode.

Claims (2)

[Claims] (1) A first feeder line connected to the DC output side of the first substation, and a second feeder line connected to the DC output side of the n+ second substation installed adjacent to the first substation. , said first m
an eighth feeder line provided in sections between the line and the second feeder line; and a first feeder line, the anode side of which is connected to the first feeder line, and the cathode side of which is connected to the third feeder line. a diode, and the anode side is the second
a first switching control element that is connected to the feeder line and whose cathode side is connected to the eighth feeder line between the feeder lines to flow a regenerative current; and whose cathode side is connected to the eighth feeder line and whose anode side is connected between the feeder lines. a first Zener diode connected to the control terminal of the first switching control element; a second switching control element connected between the second and eighth feeder lines for flowing regenerative current; and a second switching control element whose cathode side is connected to the third a second switching element connected to the feeder line and having its anode side connected to the control terminal of the second switching control element;
A feeder separation device for electric railways, characterized in that it is equipped with a Zener diode. (2) The feeding distribution device for electric railways according to claim 1, wherein the first and second switching control elements are thyristors.