CN201515219U

CN201515219U - Railway transformer station and distribution substation self-closing through line protection measurement and control device

Info

Publication number: CN201515219U
Application number: CN2009201766953U
Authority: CN
Inventors: 钟选明; 李岗; 陈小川; 王牣
Original assignee: CHENGDU SOUTHWEST JIAOTONG UNIVERSITY XUJI ELECTRIC Co Ltd; Southwest Jiaotong University
Current assignee: CHENGDU SOUTHWEST JIAOTONG UNIVERSITY XUJI ELECTRIC Co Ltd; Southwest Jiaotong University
Priority date: 2009-09-10
Filing date: 2009-09-10
Publication date: 2010-06-23
Anticipated expiration: 2019-09-10

Abstract

The utility model relates to a railway transformer station and distribution substation self-closing through line protection measurement and control device which mainly comprises a signal plug-in component, and an alternating current plug-in component and a power supply plug-in component which are respectively connected with a signal plug-in component, wherein the inside structure of the signal plug-in component comprises a bus, and a 16-bit A/D convertor, double-hole RAM, a CPU, a program memory FLASH RAM, a constant value and report memory FLASH RAM, a data memory SRAM, a restoring chip, a time chip and a USB interface chip. The railway transformer station and distribution substation self-closing through line protection measurement and control device not only can finish the integral functions of protection of automatic closing and electric through circuits and measurement and control, but also has complete functions, compact and smart structure, and higher reliability.

Description

Be applicable to the self-closing through track protection of the railway transformer and distribution station measure and control device of Line for Passenger Transportation

Technical field

The utility model relates to railway transformer and distribution station protective device field, specifically is meant a kind of self-closing through track protection of railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation.

Background technology

In recent years; the technical merit of China railways transformer and distribution station secondary device has had very much progress; achievement is obvious to all; but in the practice process, still there are a lot of problems; for example design is complicated, need spend a large amount of man power and materials during maintenance and carry out fault detect, just can keep in repair then; thereby waste a large amount of time and efforts, and then it is not yet in place to illustrate that also China's prior art is done at aspects such as unit protection and fault self-checkings.

The utility model content

Technical problem to be solved in the utility model provides a kind of self-closing through track protection of railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation; it not only can be finished and automatically close up and electric power connects protection, the measurement and control integration function of circuit; and perfect in shape and function; compact conformation is small and exquisite; has higher reliability; both but group screen was installed, and also can directly be installed on the switch cubicle.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the self-closing through track protection of the railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation; it is characterized in that; mainly form by the signal plug-in unit; described signal plug-in unit internal structure includes bus, and 16 A/D converters that link to each other with bus respectively, dual port RAM, CPU, program storage FLASH RAM, definite value and reporting memory FLASHRAM, data storage SRAM, the chip that resets, clock chip and USB interface chip.

Further, this be applicable to the self-closing through track protection of the railway transformer and distribution station of Line for Passenger Transportation measure and control device also include link to each other with the signal plug-in unit respectively exchange plug-in unit and power insert.

In order to make the optional majority kind of this equipment network configuration, described dual port RAM is provided with the network interface that adopts the plug-in card mode and support redundant optical fiber self-healing dual-ring network structure.

For the ease of carrying out regular maintenance by portable machine, described USB interface chip is provided with the USB interface of a standard.

In order better to realize the utility model, in described signal plug-in unit, also be provided with the amount of leaving and open, and be connected with the outside by optical isolation board respectively into amount; Simultaneously, described power insert links to each other with described signal plug-in unit by the amount of leaving, on the described amount of opening, freely define open into.

To sum up; the beneficial effects of the utility model are: device can be realized the alternate overcurrent protection of the syllogic of self-closing through track by way of hardware and software combination; automatic reclosing of three-phase; functions such as decompression automatic closing; in the time of also can breaking down at the hardware of protective device; fault to device is carried out self check; comprise that the definite value self check makes mistakes; relay is left bad; the AD self check makes mistakes; the RAM self check makes mistakes; writing FLASH makes mistakes etc.; alarm indicator on the device panel all can provide alarm signal; further ensure the normal operation of whole system, and under failure condition, save maintainer's time and efforts.

Description of drawings

Fig. 1 is an overall structure schematic block diagram of the present utility model.

Fig. 2 is the alternate overcurrent protection theory diagram of the utility model syllogic.

Fig. 3 is automatic reclosing theory diagram of the utility model three-phase.

Fig. 4 is the self-closing through track system wiring of the utility model figure.

Fig. 5 is the utility model decompression prepared auto restart theory diagram.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.

Embodiment

As shown in Figure 1, this is applicable to the self-closing through track protection of the railway transformer and distribution station measure and control device of Line for Passenger Transportation, mainly form by the signal plug-in unit, described signal plug-in unit internal structure includes bus, and 16 A/D converters that link to each other with bus respectively, dual port RAM, CPU, program storage FLASH RAM, definite value and reporting memory FLASH RAM, data storage SRAM, the chip that resets, clock chip and USB interface chip; This device also include respectively link to each other with the signal plug-in unit exchange plug-in unit and power insert; Described dual port RAM is provided with the network interface that adopts the plug-in card mode and support redundant optical fiber self-healing dual-ring network structure; Described USB interface chip is provided with the USB interface of a standard; In described signal plug-in unit, also be provided with the amount of leaving and open, and be connected with outside by optical isolation board respectively into amount; Simultaneously, described power insert links to each other with described signal plug-in unit by the amount of leaving, on the described amount of opening, freely define open into.

This self-closing through track protection of railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation can realize that its principle is as follows to functions such as the alternate overcurrent protection of the syllogic of self-closing through track, automatic reclosing of three-phase, decompression automatic closings:

(1) the alternate overcurrent protection of syllogic

The self-closing perforation measure and control device of the self-closing through track of this railway substation is established the alternate overcurrent protection of syllogic, and each section electric current and time definite value can independently be adjusted, and controls the throwing of this three section protection and moves back by soft pressing plate is set respectively, and its theory diagram as shown in Figure 2.

(2) automatic reclosing of three-phase

For reducing the interruption duration of self-closing through track, device is provided with three-phase single shot reclosing function, moves back by reclosing pressing plate control throwing is set.Reclosing is when switch an is positioned at charging when closing, and protection tripping operation back as condition satisfy and then enter the reclosing time-delay, the back outlet coincidence of delaying time; overlap the back as fault-free in 3 seconds; then this time reclosing is judged to successfully, overlaps the back as in 3 seconds fault is arranged, and then this time reclosing is judged to failure.Three-phase single shot reclosing theory diagram as shown in Figure 3.It is to appoint in the three-phase line voltage to have one greater than the compression set value is arranged that bus has the decision condition of pressure.

(3) decompression automatic closing

Railway is self-closing, the through track system wiring as shown in Figure 4.During normal the operation, first is done main for institute, and 1DL is closing the position; Second is done and is equipped with for institute, and 2DL is powered by first in a minute position, and circuit has pressure.

During circuit generation transient fault, main for action that first is protected, 1DL tripping, circuit decompression.Be equipped with for second detect the circuit decompression be UAB, UBC, UCA all less than no compression set value, have at bus under the situation of pressure, second institute decompression prepared auto restart moves.2DL closes a floodgate, and recovers line powering, and circuit has pressure.Circuit that first detects has that to press be that UAB, UBC, UCA appoint and a voltage arranged greater than the compression set value is arranged, and then no longer overlaps.Main attack that second becomes, first revert to be equipped with and supply.

During circuit generation permanent fault, main attack action that first is protected, 1DL tripping, circuit decompression.Be equipped with for second detect the circuit decompression be UAB, UBC, UCA all less than no compression set value, have at bus under the situation of pressure, second institute decompression prepared auto restart moves.2DL closes a floodgate, and moves on the faulty line.Action that second is protected, the 2DL tripping operation.Reclosing that second is protected discharge, the locking reclosing.First institute has pressure, circuit not to have under the situation of pressure through overlapping time-delay at bus, and the reclosing action overlaps permanent fault, and first is quickened tripping operation.Decompression prepared auto restart theory diagram as shown in Figure 5.

As mentioned above, just can realize the utility model preferably.

Claims

1. be applicable to the self-closing through track protection of the railway transformer and distribution station measure and control device of Line for Passenger Transportation; it is characterized in that; mainly form by the signal plug-in unit; described signal plug-in unit internal structure includes bus, and 16 A/D converters that link to each other with bus respectively, dual port RAM, CPU, program storage FLASH RAM, definite value and reporting memory FLASH RAM, data storage SRAM, the chip that resets, clock chip and USB interface chip.

2. the self-closing through track protection of the railway transformer and distribution station that is applicable to Line for Passenger Transportation according to claim 1 measure and control device is characterized in that, also include link to each other with the signal plug-in unit respectively exchange plug-in unit and power insert.

3. the self-closing through track protection of the railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation according to claim 1 is characterized in that described dual port RAM is provided with the network interface that adopts the plug-in card mode and support redundant optical fiber self-healing dual-ring network structure.

4. the self-closing through track protection of the railway transformer and distribution station measure and control device that is applicable to Line for Passenger Transportation according to claim 1 is characterized in that described USB interface chip is provided with the USB interface of a standard.

5. the self-closing through track protection of the railway transformer and distribution station that is applicable to Line for Passenger Transportation according to claim 1 measure and control device is characterized in that, also is provided with the amount of leaving and opens into amount in described signal plug-in unit, and be connected with the outside by optical isolation board respectively; Simultaneously, described power insert links to each other with described signal plug-in unit by the amount of leaving, on the described amount of opening, freely define open into.