CN212784889U - Monitoring system for electrified railway contact net induction electricity taking - Google Patents

Abstract

The utility model provides a be applied to electric railway contact net induction electricity-taking's monitoring system to avoid setting up transformer or long distance low voltage transmission line, provide passive power supply to the monitoring facilities of interval no power section, the power supply performance is stable, reliable, and is favorable to reducing the engineering investment. The monitoring system comprises a monitoring measurement system, and monitoring information of the monitoring measurement system is uploaded to a contact net monitoring center by a data communication system. The monitoring and measuring system and the data communication system are provided with a working power supply by an induction power taking device, the induction power taking device is composed of a catenary and an electromagnetic induction coil sleeved on the catenary, and the catenary is fixedly arranged on a flat cantilever of the overhead line system; the electromagnetic induction coil converts the alternating current magnetic field changed around the carrier cable into original electric energy, transmits the original electric energy to the energy management system, and is adjusted by the rectification and voltage stabilization circuit to be converted into stable direct current serving as a working power supply.

Description

Monitoring system for electrified railway contact net induction electricity taking

Technical Field

The utility model relates to an electronic railway contact net monitoring system, in particular to be applied to the response of electronic railway contact net and get the electricity certainly to utilize contact net wire self to realize the monitoring system of communication.

Background

With the leap development of national railway construction, the economic development and the construction of the electrified railway in mountainous areas are already occupied with important positions, and the special factors such as geographical position, economic development level and the like determine that the railway has different characteristics from the railways in other plain areas: the mountainous railway has complex terrain along the line, and has terrain topography with severe conditions, strong wind of bridge and tunnel, dense fog in mountainous areas and other severe natural environment factors; meanwhile, most areas where the mountain electrified railways pass are not developed economically, power grids are weak, and many areas are areas without power and are unmanned areas, and the areas serve as 'power supply blood vessels' -contact networks of the electrified railway power energy sources, so that the safety and reliability of the contact networks have great influence on whether railway trains can run normally or not and whether production and life of people are influenced or not.

The contact net is a special single-phase transmission line arranged along a railway line, is arranged in the open air without direct standby, the equipment structure, parts and the like of the contact net are necessarily influenced by natural conditions and external environmental condition changes, meanwhile, the contact net is in high-speed friction with a pantograph of an electric locomotive, the contact net cables and parts are in large tension, vibration, friction, electricity, heat and physical changes of components for a long time, and technical state parameters are easy to change. Therefore, it is very important to monitor the contact network in all directions by using the integrated state monitoring device.

The current situation is that the conventional ordinary speed railway is not provided with a contact network monitoring system, and according to the provision of the temporary operation regulation of the operation and maintenance of the high-speed railway contact network, the contact monitoring of the high-speed railway mainly comprises the following measures: the patrol is divided into walking patrol and riding patrol; secondly, video and camera observation, namely, carrying out appearance inspection on the contact network equipment by utilizing video monitoring equipment arranged along the line and a high-speed camera arranged on the train; measuring the temperature of the main conductive circuit, namely measuring the contact state of the continuous point by using a thermal imager, a temperature measuring patch and the like; and fourthly, inspection of observation points, namely establishing the observation points at key places such as a tunnel portal, a station throat area, a split phase and the like, and regularly observing the contact network state when a train passes through.

In recent years, according to the latest "high speed railway design code" TB10621-2014, item 11.5 "12" overhead line system, system equipment such as video monitoring and sensor detection can be arranged, the safety detection and fault pre-judgment are carried out on the states of key equipment such as a contact network phase splitting, a line fork area, an upper network point cable, a tunnel portal with the length not less than 3km, a local interface, a motor train unit entrance and exit section, and the video monitoring equipment is arranged in the rule of a railway power supply maintenance monitoring room,

at present, most designed or set monitoring points in a high-speed railway cannot meet the accurate requirements of contact network equipment state and fault diagnosis and inspection, inspection of a contact network basically depends on manual regular inspection, the most important factor for setting the monitoring points is the problem of interval power supply and communication, particularly, the interval is located in a mountain area, on one hand, the monitoring points have no convenient and economic power supply conditions, and if the electric power of a railway electric power through line or a power supply of a distribution station is adopted, either a newly-built power transformer needs to be matched or an overlong low-voltage power supply line needs to be set for supplying power to the monitoring points; on the other hand, the acquired data needs to be transmitted by a special communication optical cable laid along the railway, so that the problems of high engineering investment, difficult maintenance, serious theft and the like are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a monitoring system of electric railway contact net induction electricity getting is provided to avoid setting up transformer or long distance low voltage transmission line, provide passive power supply to the monitoring facilities of interval no power section, the power supply performance is stable, reliable, and is favorable to reducing the engineering investment.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model discloses a monitoring system of electric railway contact net induction electricity taking, including monitoring measurement system, its monitoring information uploads to contact net surveillance center, characterized by data communication system: the monitoring and measuring system and the data communication system are provided with a working power supply by an induction power taking device, the induction power taking device is composed of a catenary and an electromagnetic induction coil sleeved on the catenary, and the catenary is fixedly arranged on a flat cantilever of the overhead line system; the electromagnetic induction coil converts the alternating current magnetic field changed around the carrier cable into original electric energy, transmits the original electric energy to the energy management system, and is adjusted by the rectification and voltage stabilization circuit to be converted into stable direct current serving as a working power supply.

The beneficial effects of the utility model are that:

the device has the advantages that the structure is simple, the installation is convenient, and the device is suitable for being directly installed on a catenary of a contact network to supply power to contact network monitoring equipment;

and secondly, passive power supply can be provided for the monitoring equipment without a power section in the interval, a transformer or a long-distance low-voltage transmission line is avoided, and the power supply performance is stable and reliable.

And thirdly, a return line, an overhead ground wire or a PW auxiliary return conductor (steel-cored aluminum strand) in the contact network conductor is changed into an OPWG (optical fiber composite overhead ground wire), a special communication optical cable laid along a railway line is not needed, the contact network conductor is directly utilized to realize communication, the engineering investment is reduced, and the maintenance is simple.

Drawings

The specification includes the following three drawings:

fig. 1 is a schematic view of an installation mode of the monitoring system for electric railway contact network induction power taking of the utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 the utility model relates to a monitoring system's schematic diagram among the monitoring system of electric railway connecting net induction electricity-taking.

The figure part shows the component names and the corresponding labels: the device comprises a contact net support 1, a contact net cantilever 2, a positioning tube 3, a contact line 4, an induction power taking device 5, a catenary 51, an electromagnetic induction coil 52, an optical fiber composite overhead ground or return line 6, a support shoulder frame 61, an energy management system 7, a monitoring and measuring system 8, a video camera and sensor 81, a contact net support hoop 82, a data communication system 9 and a contact net monitoring center 10.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1, the utility model discloses a monitoring system of electric railway contact net induction electricity taking, including monitoring measurement system 8, its monitoring information is uploaded to contact net surveillance center 10 by data communication system 9. The monitoring and measuring system 8 and the data communication system 9 are provided with a working power supply by an induction power-taking device 5, the induction power-taking device 5 is composed of a catenary 51 and an electromagnetic induction coil 52 hooped on the catenary 51, and the catenary 51 is fixedly arranged on the contact net flat cantilever 2. The electromagnetic induction coil 52 converts the alternating current magnetic field changed around the carrier cable 51 into original electric energy, transmits the original electric energy to the energy management system 7, and is adjusted by the rectification and voltage-stabilizing circuit to be converted into stable direct current as a working power supply.

Referring to fig. 1 and 2, the upper catenary 51 of the contact net system is a stressed cable and is a 27.5kV electrified conductor, the current flowing in the locomotive running can reach hundreds of amperes, and an electromagnetic induction coil 52 is sleeved on the catenary 51 to convert the alternating current magnetic field changed around the lead into original electric energy by utilizing the electromagnetic induction principle. In the power supply lacking area, a power supply does not need to be introduced from a place or a station, and a working power supply is directly obtained by sensing electricity from a catenary 51 wire of a contact network, so that the working power supply is provided for the monitoring and measuring system 8 and the data communication system 9.

The energy management system 7 comprises a rectification voltage stabilizing circuit, a power controller and an energy storage device; the original electric energy is adjusted by a rectifying and voltage-stabilizing circuit to be changed into stable direct current; the power controller is connected with the rectifying voltage stabilizer and the energy storage device, the charging and discharging management of the energy storage device is realized through the power regulating circuit, when the output power of the device can meet the requirement of normal operation of a load, the charging circuit directly supplies power to the load, and the input of energy is controlled through the power-taking power regulating circuit; and when the output power is insufficient due to too low current on the power transmission conductor, the energy storage device is adopted to intermittently supply power to the load.

Referring to fig. 1, the monitoring and measuring system 8 includes a laser range finder, a video camera, and a sensor 81. The sensors 81 include wind, electricity, and temperature sensors, etc., and can obtain environmental status information. The video camera and the sensor 81 observe the contact net state, the contact line abrasion degree, the contact net icing state and other information visually. Can be to monitoring contact net wire height, skew measurement through laser range finder to can carry out the wire according to data and whether off-line, whether the pillar is crooked the condition judgement such as.

Referring to fig. 1, the main bodies of the energy management system 7 and the monitoring and measuring system 8 are fixedly installed on a pillar shoulder frame 61, the pillar shoulder frame 61 is fixedly installed on the catenary pillar 1, and the video camera and the sensor 81 are fixedly installed on the catenary pillar 1 through a bracket 82.

Referring to fig. 1, an optical fiber composite overhead ground or return line 6 having dual functions of ground and communication is suspended and installed on the outer side of the pillar shoulder frame 61, and communication is directly realized by using a contact line wire without using a special communication optical cable laid along a railway. The data communication system 9 uploads monitoring information to the contact network monitoring center 10 through the optical fiber composite overhead ground wire or the return wire 6.

It is only with the illustration above the utility model relates to a some principles of electric railway contact net response power-taking monitoring system, not will the utility model discloses the limitation show with concrete structure and application scope in, all corresponding revisions and equivalents that probably are utilized all belong to the utility model discloses the patent range who applies for.

Claims (5)

1. The utility model provides a monitoring system of electric railway connecting net induction electricity-taking, includes monitoring measurement system (8), its monitoring information uploads to connecting net surveillance center (10), characterized by data communication system (9): the monitoring and measuring system (8) and the data communication system (9) are provided with a working power supply by an induction electricity taking device (5), the induction electricity taking device (5) is composed of a catenary (51) and an electromagnetic induction coil (52) sleeved on the catenary (51), and the catenary (51) is fixedly arranged on the contact net flat cantilever (2); the electromagnetic induction coil (52) converts the alternating current magnetic field changed around the carrier cable (51) into original electric energy, transmits the original electric energy to the energy management system (7), and is regulated by the rectifying and voltage-stabilizing circuit to be converted into stable direct current serving as a working power supply.

2. The system for monitoring the induction power taking of the overhead contact line system of the electrified railway as claimed in claim 1, which is characterized in that: the energy management system (7) comprises a rectification voltage stabilizing circuit, a power controller and an energy storage device; the original electric energy is adjusted by a rectifying and voltage-stabilizing circuit to be changed into stable direct current; the power controller is connected with the rectifying voltage stabilizer and the energy storage device, the charging and discharging management of the energy storage device is realized through the power regulating circuit, when the output power of the device can meet the requirement of normal operation of a load, the charging circuit directly supplies power to the load, and the input of energy is controlled through the power-taking power regulating circuit; and when the output power is insufficient due to too low current on the power transmission conductor, the energy storage device is adopted to intermittently supply power to the load.

3. The system for monitoring the induction power taking of the overhead contact line system of the electrified railway as claimed in claim 1, which is characterized in that: the monitoring and measuring system (8) comprises a laser range finder, a video camera and a sensor (81).

4. The system for monitoring the induction power taking of the overhead contact line system of the electrified railway as claimed in claim 2 or 3, which is characterized in that: the main body installation of energy management system (7) and control measurement system (8) is fixed in pillar shoulder frame (61), and pillar shoulder frame (61) fixed mounting is on contact net pillar (1), and video camera and sensor (81) pass through contact net pillar staple bolt (82) fixed mounting on contact net pillar (1).

5. The system for monitoring the induction power taking of the overhead contact line system of the electrified railway as claimed in claim 4, wherein: and the outer side of the pillar shoulder frame (61) is provided with an optical fiber composite overhead ground wire or return wire (6) with the dual functions of ground wire and communication in a hanging manner, and the data communication system (9) uploads monitoring information to a contact network monitoring center (10) through the optical fiber composite overhead ground wire or return wire (6).

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