阅读说明：本技术 面向地铁的输电设施 (Transmission facility for subway ) 是由 宋奇吼 徐百钏 陈莉 陈娜娜 沈思宇 于 2020-06-09 设计创作，主要内容包括：一种面向地铁的输电设施,包括DC变压器、蓄电设备、电量监控设备以及PLC；所述DC变压器并连于输电线路的DC边；在地铁输电工作时,DC变压器把输电线路DC边的600V电动势转变为满足蓄电设备电动势规范的160V电动势；在地铁失电后,把蓄电设备的160V电动势执行增压,来达成输电线路DC边的600V电动势规范,达成地铁在过无电区间时的输电。结合其它结构有效避免了现有技术中在通过无电区间之际未有电动势给以地铁、使得地铁的适宜性减弱、在通过若干无电区间时进一步不利于乘客适宜性的缺陷。(A subway-oriented power transmission facility comprises a DC transformer, a power storage device, an electric quantity monitoring device and a PLC; the DC transformer is connected to the DC side of the power transmission line in parallel; when the subway is in power transmission work, the DC transformer converts the 600V electromotive force on the DC side of the power transmission line into 160V electromotive force meeting the electromotive force specification of the electric storage equipment; after the subway loses power, 160V electromotive force of the electric storage equipment is boosted to achieve the 600V electromotive force standard of the DC side of the power transmission line, and power transmission of the subway in the non-power section is achieved. The combination with other structures effectively avoids the defects that in the prior art, no electromotive force is supplied to the subway when passing through the non-electric section, so that the suitability of the subway is weakened, and the suitability of passengers is further not facilitated when passing through a plurality of non-electric sections.)

1. A subway-oriented power transmission facility is characterized by comprising a DC transformer, an electric storage device, an electric quantity monitoring device and a PLC;

the DC transformer is connected to the DC side of the power transmission line in parallel; when the subway is in power transmission work, the DC transformer converts the 600V electromotive force on the DC side of the power transmission line into 160V electromotive force meeting the electromotive force specification of the electric storage equipment; after the subway loses power, 160V electromotive force of the electric storage equipment is boosted to achieve the 600V electromotive force standard of the DC side of the power transmission line, and power transmission of the subway in the non-power section is achieved.

2. A subway oriented power transmission facility as claimed in claim 1, wherein said DC transformers are connected in parallel to the DC sides of several transmission lines, respectively.

3. A subway-oriented power transmission facility as claimed in claim 1, wherein said electric quantity monitoring apparatus is configured to monitor whether the power transmission line is powered, and when the line is in a non-power section, the subway cannot be powered via the pantograph, so the power transmission line is powered off; the electric quantity monitoring equipment monitors the connection and the disconnection of the line to reflect whether the subway reaches the non-electric section or not.

4. A subway-oriented power transmission facility as claimed in claim 1, wherein said PLC is connected to a power monitoring device, and when said power monitoring device monitors that the power transmission line is out of power, corresponding data is derived, and the PLC controls the power storage device to transmit power by means of the data; correspondingly, when the electric quantity monitoring equipment monitors the power transmission of the power transmission line, corresponding data are also derived, and the PLC controls the power storage equipment to transmit power.

5. A subway-oriented power transmission facility as claimed in claim 1, wherein said electric storage device is connected to said DC transformer and to said PLC, and power transmission or power release is performed under control of the PLC.

6. A subway-oriented power transmission facility, characterized in that it comprises:

the system comprises a DC transformer, an electric storage device, an electric quantity monitoring device, a PLC, a relay and a fault monitoring device for the DC transformer;

here, the DC transformer is connected in parallel to a transmission line DC side, and is configured to convert an electromotive force of the electrical storage device into a transmission line DC side voltage or convert the transmission line DC side voltage into an electromotive force of the electrical storage device.

7. A subway-oriented power transmission facility as claimed in claim 6, wherein said DC transformer is a Sepic converter, and a performance of performing boosting on an electromotive force given to a power transmission line DC side by said electric storage device and a performance of performing decompression on an electromotive force given to an electric storage device on a power transmission line DC side are achieved;

the electric quantity monitoring equipment is connected with the DC side of the power transmission line, connected with the PLC and used for monitoring whether the line is electrified or not.

8. A subway-oriented power transmission facility as claimed in claim 6, wherein said electric quantity monitoring device may be a quantity transmitter;

the PLC connected with the electric storage equipment controls the electric storage equipment to carry out power transmission or power release by virtue of the monitoring conclusion of the monitoring device;

the PLC is embedded in the DC transformer;

the power storage equipment is connected with the DC transformer, connected with the PLC and used for transmitting or releasing power under the control of the PLC;

the electrical storage device may take the form of a battery;

the relay is connected between the DC side of the transmission line and the DC transformer in series, and is used for connecting or disconnecting the line connection between the DC transformer and the DC side of the transmission line;

the contact of the relay is a break contact, and the connection between the subway power transmission equipment and the subway power transmission line is connected; and when the DC transformer has a problem, cutting off the line connection and separating.

9. A subway-oriented power transmission facility as claimed in claim 6, wherein said fault monitoring device for said DC transformer is adapted to monitor the operation of said DC transformer, and when there is a problem with said DC transformer, to de-energize the windings of said relay;

and when the winding of the relay loses power, the relay is cut off, and the DC transformer cannot be connected with the power transmission line.

10. A subway-oriented power transmission facility as claimed in claim 6, wherein said subway power transmission equipment further comprises warning means connected to said fault monitoring equipment for DC transformer for warning when there is a problem with said DC transformer; the warning component can be a loudspeaker or an LED lamp bead.

Technical Field

The invention belongs to the technical field of subways and power transmission, and particularly relates to a subway-oriented power transmission facility.

Background

Subway power transmission is a type of automatic control mode of subways and is generally applied to passenger transmission platforms. The power transmission is that the power transmission electromotive force is given on the edge of the existing double-track line on the third subway rail, and the subway uses the power transmission end to obtain the electromotive force; the electric charge returns to the power distribution station through the subway wheel and the running rail; in recent years, the suitability of the subway required by passengers is stronger and stronger along with the progress of science and technology during the period of rapid development of domestic subways; here, the power transmission of the subway is a key point for determining the suitability of the subway; when the head of the electric control subway runs smoothly, the electric control subway can bear the condition that 600V voltage is supplied by an electric pantograph, and the temperature, brightness and heat are supplied to the subway; however, when passing through the non-electric section, the suitability of the subway is weakened because no electromotive force is supplied to the subway, and especially when passing through a plurality of non-electric sections, the subway continuously transmits and loses power, which is further unfavorable for the suitability of passengers.

Therefore, the defect that continuous power transmission for the subway is urgently needed to be overcome when the subway passes through the non-power section is overcome.

Disclosure of Invention

In order to solve the problems, the invention provides a power transmission facility for subways, and effectively avoids the defects that in the prior art, no electromotive force is supplied to the subways when the subways pass through a non-power section, so that the suitability of the subways is weakened, and the suitability of passengers is further not facilitated when the subways pass through a plurality of non-power sections.

In order to overcome the defects in the prior art, the invention provides a solution for a power transmission facility facing a subway, which comprises the following specific steps:

a subway-oriented power transmission facility includes a DC transformer 21, a power storage device 31, a power amount monitoring device 41, and a PLC 51.

Further, the DC transformer 21 is connected in parallel to the DC side of the power transmission line; during subway power transmission, the DC transformer 21 converts 600V electromotive force on the DC side of the power transmission line into 160V electromotive force meeting the electromotive force specification of the electrical storage device 31; after the subway loses power, 160V electromotive force of the electric storage device 31 is boosted to achieve 600V electromotive force specification of a DC side of a power transmission line, and power transmission of the subway in a non-power section is achieved.

If the power transmission can be carried out on a plurality of power transmission lines in a subway, the DC transformers 21 can also be respectively connected with the DC sides of the power transmission lines in parallel, so that the power transmission for the subway is good when the circuit passes through a powerless interval, and the suitability of passengers is improved.

Further, the electric quantity monitoring device 41 is used for monitoring whether the power transmission line is powered on or not, and when the power transmission line is in a non-power section, the subway cannot take power through the pantograph, so that the power transmission line loses power; the electricity amount monitoring device 41 monitors the connection and disconnection of the line to reflect whether the subway reaches the non-electric section or not.

Further, the PLC51 is connected to the power monitoring device 41, and when the power monitoring device monitors that the power transmission line loses power, corresponding data is derived, and the PLC51 controls the power storage device 31 to transmit power according to the data; correspondingly, when the power monitoring device 41 monitors the transmission of power from the transmission line, corresponding data is also derived, and the PLC51 then commands the power storage device 31 to transmit power.

Further, the electric storage device 31 is connected to the DC transformer 21 and to the PLC51, and performs power transmission or power release under the control of the PLC 51.

The invention provides a subway-oriented power transmission facility which is used for supplying power to a subway in a non-power section and comprises a DC transformer, a power storage device, an electric quantity monitoring device and a PLC. The DC transformer is connected to the DC side of the power transmission line in parallel; the electric quantity monitoring equipment is connected with the DC side of the power transmission line and is connected with the PLC; the PLC is connected with the power storage equipment; the electrical storage device is connected to the DC transformer and to the PLC. When the subway runs in a general interval, the monitoring device monitors that the subway power transmission system is electrified; the PLC controls power transmission to the power storage equipment according to the power transmission line power-on conclusion monitored by the monitoring device; the DC transformer reduces the electromotive force of the power transmission line to the electromotive force of the electric storage equipment, and energy storage of the electric storage equipment in a normal area is achieved. When the subway passes through the non-power section, the subway power transmission system loses power, and the monitoring device monitors the power loss of the power transmission line; and the PLC controls the electricity storage equipment to discharge electricity according to the conclusion of the electricity loss of the power transmission line monitored by the monitoring device. The DC transformer boosts the voltage of the electric storage device to the electromotive force of the transmission line, and achieves power transmission to the subway when the electric section is over.

A subway-oriented power transmission facility comprising:

the DC transformer 21, the electric storage device 31, the electric quantity monitoring device 41, the PLC51, the relay 61, and the fault monitoring device 71 for the DC transformer;

here, the DC transformer 40 is connected in parallel to the transmission line DC side, and is configured to convert the electromotive force of the electrical storage device 31 into the transmission line DC side voltage or convert the transmission line DC side voltage into the electromotive force of the electrical storage device 31.

Further, the DC transformer 21 is a Sepic converter, and achieves a performance of boosting the electromotive force applied to the transmission line DC side by the electric storage device 31 and a performance of decompressing the electromotive force applied to the electric storage device 31 by the transmission line DC side;

the power monitoring device 41 is connected to the transmission line DC side and to the PLC51 for monitoring whether the line is powered.

Further, the power monitoring device 41 may be a power transmitter. The power monitoring device 41 is not limited to a power transmitter.

The PLC51 connected to the electric storage device 31 operates the electric storage device 31 to transmit or release electric power by virtue of the monitoring result of the monitoring apparatus 30.

Further, the PLC51 is embedded in the DC transformer 21;

the power storage device 31 is connected with the DC transformer 21 and the PLC51, and is configured to perform power transmission or power release under the control of the PLC 51.

Further, the electric storage device 31 may take the form of a battery;

the relay 61 is connected in series between the transmission line DC side and the DC transformer 21, and switches on or off the line connection between the DC transformer 21 and the transmission line DC side;

under normal conditions, the contact of the relay 61 is a break contact, and the connection between the subway power transmission equipment and the subway power transmission line is connected; when the DC transformer 21 has a problem, the line connection is cut off and disconnection is performed.

Further, the fault monitoring device 71 for the DC transformer is configured to monitor an operation condition of the DC transformer 21, and when a problem occurs in the DC transformer, power is lost to a winding of the relay;

and the winding 81 of the relay loses power, then the relay 61 is cut off, the DC transformer 21 can not be connected with the power transmission line, and the active separation of the DC transformer 21 with problems is ensured.

Naturally, by virtue of specific requirements, corresponding monitoring can be used for monitoring the power transmission line, and when the power transmission line is monitored to have a problem, the relay is controlled to be cut off. Here, the present invention does not limit the devices and the number of devices for operating the relay.

Furthermore, the subway power transmission equipment provided by the invention further comprises a warning component connected with the fault monitoring equipment for the DC transformer, and the warning component is used for warning when the DC transformer has a problem.

Furthermore, the warning component can be a loudspeaker or an LED lamp bead.

The invention has the beneficial effects that:

the invention is used for providing and transmitting power for the subway in a non-power section, and comprises a DC transformer, an electric storage device, an electric quantity monitoring device and a PLC. The DC transformer is connected to the DC side of the power transmission line in parallel; the electric quantity monitoring equipment is connected with the DC side of the power transmission line and is connected with the PLC; the PLC is connected with the power storage equipment; the electric storage equipment is connected with the DC transformer and the PLC; when the subway runs in a general interval, the monitoring device monitors that the subway power transmission system is electrified; the PLC controls the charging of the electric storage equipment by means of the electric transmission line power-on conclusion monitored by the monitoring device; the DC transformer reduces the electromotive force of the power transmission line to the electromotive force of the electric storage equipment, so that the electric storage equipment is stored in a general region; when a subway passes through a powerless interval, a subway power transmission system loses power, and a monitoring device monitors that a power transmission line loses power; the PLC controls the electricity storage equipment to discharge electricity according to the conclusion of the electricity loss of the power transmission line monitored by the monitoring device; the DC transformer boosts the electromotive force of the electric storage device to the electromotive force of the transmission line, and achieves power transmission to the subway when the electric section is over.

Drawings

Fig. 1 is a schematic view of the inventive subway oriented power transmission installation.

Detailed Description

The invention will be further described with reference to the following figures and examples.