CN209728151U

CN209728151U - Traction substation 27.5kV bus-bar potential transformer automatic switchover system

Info

Publication number: CN209728151U
Application number: CN201822175991.3U
Authority: CN
Inventors: 闫雪松; 钮承新; 崔奇; 闫兆辉; 高永江
Original assignee: TIANJIN KEYVIA ELECTRIC CO Ltd; China Railway Lanzhou Group Co Ltd
Current assignee: TIANJIN KEYVIA ELECTRIC CO Ltd; China Railway Lanzhou Group Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2019-12-03
Anticipated expiration: 2028-12-24

Abstract

The utility model provides a kind of traction substation 27.5kV bus-bar potential transformer automatic switchover system, including voltage transformer, voltage automatic switching device, the voltage transformer connection 27.5KV bus and voltage automatic switching device, the voltage automatic switching device are also connected with secondary bus；The voltage automatic switching device includes A/D module, FPGA module, CPU module, control module, voltage switching outlet module, the A/D module is used to the analog signals of voltage transformer and secondary bus side being converted to digital quantity signal, and it is sent to FPGA module, the FGPA module connects CPU module.Traction substation 27.5kV bus-bar potential transformer automatic switchover system described in the utility model can real-time monitoring voltage transformer and secondary bus operating status, realize auto-changeover control and the remote control switching control of voltage transformer.

Description

Traction substation 27.5kV bus-bar potential transformer automatic switchover system

Technical field

The utility model belongs to traction power supply technical field, more particularly, to a kind of traction substation 27.5kV bus electricity Press mutual inductor automatic switchover system.

Background technique

Most domestic traction substation 27.5KV voltage transformer secondary voltage monitoring is monitored by person on duty at present, by Electric substation person on duty watches voltage transformer secondary voltmeter or by general-purpose table look-up voltage transformer working condition, even if peace Filling monitoring device to be also is realized by way of voltmeter, that is, a voltage transformer no-voltage is detected, on voltmeter The handoff functionality of secondary voltage is realized in reflection by installing with the manual change-over switch on control panel cabinet.Program design is opposite Simply, cannot achieve voltage transformer automatic voltage monitoring, be unable to telemechanical switching and whole group handoff functionality, cannot achieve backstage with The telemechanical of office's dispatching terminal is consulted and handoff functionality.

Summary of the invention

In view of this, the utility model is directed to a kind of traction substation 27.5kV bus-bar potential transformer automatic switchover System is manually monitored with solving existing 27.5KV voltage transformer needs, and switched over manually, after cannot achieve The problem of telemechanical of platform and office's dispatching terminal access and handoff functionality.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

Traction substation 27.5kV bus-bar potential transformer automatic switchover system, including voltage transformer, voltage are cut automatically Changing device, the voltage transformer connection 27.5KV bus and voltage automatic switching device, the voltage automatic switching device is also Connect secondary bus；

The voltage automatic switching device includes that A/D module, FPGA module, CPU module, control module, voltage switch out Mouth mold block, the A/D module are used to the analog signals of voltage transformer and secondary bus side being converted to digital quantity signal, and It is sent to FPGA module, the FGPA module connects CPU module, and the CPU module exports control result by control module, and It is transmitted to voltage switching outlet module, the relay in outlet module is switched by control voltage and is worked, is realized to output node Control.

Further, the secondary bus collects conducting wire for voltage transformer output voltage.

Further, the A/D module is two pieces, one of to have 8 physics analog-to-digital conversion interfaces, input terminal connection Voltage transformer, output end connect fpga chip；

Another piece of A/D module has 4 physics analog-to-digital conversion interfaces, and input terminal connects secondary bus side, output end connection Fpga chip.

Further, the control module is two pieces, and the input terminal of two pieces of control modules all connects CPU module, output end All connection voltage switches outlet module.

Compared with the existing technology, traction substation 27.5kV bus-bar potential transformer described in the utility model automatically switches System has the advantage that

Traction substation 27.5kV bus-bar potential transformer automatic switchover system described in the utility model can real-time monitoring The operating status of voltage transformer and secondary bus realizes auto-changeover control and the remote control switching control of voltage transformer； The system also can access the existing complex automatic system of traction substation, as the subsystem of complex automatic system, realize electricity Press the monitoring and control of mutual inductor.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.In In attached drawing:

Fig. 1 is traction substation 27.5kV bus-bar potential transformer automatic switchover system described in the utility model embodiment Schematic diagram.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in Figure 1, a kind of traction substation 27.5kV bus-bar potential transformer automatic switchover system, which is characterized in that Mainly it is made of 27.5kV bus, voltage transformer, voltage automatic switching device, secondary bus.The ferroelectric 27.5kV is female Line is connected with voltage transformer；The voltage transformer is connected with voltage automatic switching device；The voltage automatically switches Device is connected with secondary bus.

The ferroelectric 27.5kV bus is that Secondary Side of Traction Transformer and outgoing collect conducting wire in traction substation Or copper bar, effect is to collect, distribute and transmit electric energy, and voltage is specified 27.5kV.

The voltage transformer is a kind of to be converted to busbar voltage of ferroelectric 27.5kV suitable for relay protection The equipment of low-voltage.

The voltage automatic switching device further includes A/D module 1, A/D module 2, FPGA module, CPU module, control Module 1, control module 2, voltage switching outlet module etc..

The model AD7606 of A/D module 1, A/D module 2, it is the synchronized sampling modulus data in a 8 channel, 16 Collector, device built-in analog input clamping protection, second order frequency overlapped-resistable filter, sample/hold amplifier, 16 charges divide again With gradually-appoximant analog-digital converter (ADC), flexible digital filter, 2.5V reference voltage source, reference voltage buffering and height The serial and concurrent interface of speed.The A/D module 1 has 8 physics analog-to-digital conversion interfaces, can be by the mould of voltage transformer side Analog quantity is converted into digital quantity in real time, and the output interface of A/D module 1 is connected with FPGA module；The A/D module 2 has 4 The analog quantity of secondary bus side, can be converted into real time digital quantity by physics analog-to-digital conversion interface, the output interface of A/D module 2 with FPGA module is connected.

The FPGA be a logic unit of altera corp be 14400, model EP4CE15F23I7 high speed Field programmable gate array, operating voltage are 1.15V~1.25V, and operating temperature is -40 DEG C~100 DEG C.FPGA module and CPU Module is connected, and digital quantity after the processing of internal logic program, is transferred data to CPU module by FPGA module, meanwhile, CPU mould Block by FPGA module, can also real-time control A/D module 1 and A/D module 2 data acquisition control.

The CPU module model PowerPC 8315E, its PowerQUICC II containing built-in safety accelerating machine The system of Pro processor, 8315E provide the e300 kernel of high-performance Power framework, and working frequency is up to 400MHz, band 16K I/D L1 caching, is integrated with two SATA controllers, can help to reduce whole store lists (BOM) cost.This on piece System (SoC) further includes two Gigabit Ethernet controllers for being used for network interconnection, and the PCI-Express slot of two x1 is used for The interface TDM of VoIP integrates the high speed USB 2.0 of PHY and the security engine for encrypted mathematical load.

The control module 1 and control module 2 is the computing module of integrated control logic, is compiled by structured text language It writes, control module 1 and control module 2 are connected with CPU module respectively, and CPU module is by control module 1 and control module 2 send control instruction, so that the control logic inside control module 1 and control module 2 is by being calculated control result；Control Module 1 and control module 2 are connected with voltage switching outlet module respectively, and control module 1 and control module 2 export control result, The actuating of relay in control voltage switching outlet module is exported respectively to node 1 or node 2 or node according to the actual situation 3 or node 4.

The voltage automatic switching device has the function of that data acquisition and information transmit-receive, voltage automatic switching device are real-time The operation data of collection voltages mutual inductor can carry out information transmission by the communication module inside device, receive voltage transformer Remote control switching control information；The voltage automatic switching device also has the function of logic judgment and automatic control, voltage Automatic switching control equipment is according to the control logic defaulted in inside device, the operation shape of comprehensive analysis voltage transformer and secondary bus Condition can realize the automatic switching function of voltage transformer in the case where detecting unusual condition, and send automatic control result information.

The secondary bus is that voltage transformer institute output voltage collects conducting wire.

The voltage automatic switching device has two groups of control modules, can be realized two groups of ferroelectric 27.5kV bus electricity Press automatic switchover and the remote control handoff functionality of mutual inductor, every group of 27.5kV bus has two sections of buses, every section of bus simultaneously with it is mutual It is connected for two active and standby voltage transformers.Two groups of control modules of voltage automatic switching device are relatively independent, have individual Control logic.

The voltage automatic switching device can be connect by communication protocol with integrated automatic system in traction substation, real The upload of the information such as existing equipment running status, self-test state, switching record, and receive voltage transformer remote control order.Electricity Automatic switching control equipment communication protocol is pressed to support IEC60870-5-103, IEC60870-5-104 Standards Code.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims

1. traction substation 27.5kV bus-bar potential transformer automatic switchover system, it is characterised in that: including voltage transformer, electricity Automatic switching control equipment is pressed, the voltage transformer connection 27.5KV bus and voltage automatic switching device, the voltage are cut automatically Changing device is also connected with secondary bus；

The voltage automatic switching device includes A/D module, FPGA module, CPU module, control module, voltage switching outlet mold Block, the A/D module is used to the analog signals of voltage transformer and secondary bus side being converted to digital quantity signal, and transmits To FPGA module, the FGPA module connects CPU module, and the CPU module exports control result by control module, and transmits Switch outlet module to voltage, the relay in outlet module is switched by control voltage and is worked, realizes the control to output node System.

2. traction substation 27.5kV bus-bar potential transformer automatic switchover system according to claim 1, feature exist In: the secondary bus collects conducting wire for voltage transformer output voltage.

3. traction substation 27.5kV bus-bar potential transformer automatic switchover system according to claim 1, feature exist In: the A/D module is two pieces, and one of to have 8 physics analog-to-digital conversion interfaces, input terminal connects voltage transformer, defeated Outlet connects fpga chip；

Another piece of A/D module has 4 physics analog-to-digital conversion interfaces, and input terminal connects secondary bus side, and output end connects FPGA Chip.

4. traction substation 27.5kV bus-bar potential transformer automatic switchover system according to claim 1, feature exist In: the control module is two pieces, and the input terminal of two pieces of control modules all connects CPU module, and output end all connects voltage switching Outlet module.