CN205334167U - Be used for flood prevention flood control automatic alarm drainage system of transformer substation - Google Patents
Be used for flood prevention flood control automatic alarm drainage system of transformer substation Download PDFInfo
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- CN205334167U CN205334167U CN201520905169.1U CN201520905169U CN205334167U CN 205334167 U CN205334167 U CN 205334167U CN 201520905169 U CN201520905169 U CN 201520905169U CN 205334167 U CN205334167 U CN 205334167U
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a be used for flood prevention flood control automatic alarm drainage system of transformer substation, this system includes warning water level sensor, drainage level sensor, urgent level sensor, the system still include signal collector, signal collector comprises signal connection unit, signal conversion means, isolation amplifying unit and embedded microcomputer, the signal connection unit in proper order with signal conversion means, keep apart the amplifying unit and embedded microcomputer continuous in proper order, embedded microcomputer is equipped with field bus interface and IPC communication, the signal collector 0 of signal connection unit, signal conversion means and isolation amplifying unit all comes from embedded microcomputer, the system can realize current detection of water level, water level instruction, automatic drainage, automatic alarm function, has convenient operation, characteristics such as the practicality is strong, the action is reliable, reaction sensitivity, can satisfy the flood prevention flood control needs of unattended substation in flood season in summer completely.
Description
Technical field
This utility model relates to transformer station's power supply technique field, particularly relates to a kind of for transformer substation flood prevention flood control automatic alarm drainage arrangement。
Background technology
Summer, flood season, rainwater was more, and for many unattended operation transformer stations being in low-lying physical features, flood season, flood control flood control was particularly important。Cable floor in transformer station and cable duct, due to the relatively low reason in residing physical features position, it is easy to produce the generation of seeping phenomenon, it is immersed in for a long time in hydrops due to cable, it is easily caused cable insulation insulation function to decline, even occur that the serious consequences such as water blast met by cable, jeopardize the safe operation of whole transformer station power supply unit, if transformer station's water inlet is more, also can result in transformer station's full cut-off, produce to enterprise, resident living brings unnecessary loss and inconvenience, all can produce to have a strong impact on to producing and living。At present, the station internal drainage work of transformer station is typically all employing water pump and drain pipe, in standing, staff is when carrying out daily tour flood season, as found there is hydrops in station, just opening water discharge water pump carries out draining, to ensure the safe operation of station equipment, its weak point is: owing to needs carry out artificial observation, fairly time consuming effort, can not accomplish to find in time hydrops simultaneously, process hydrops in time, work efficiency is relatively low, once occur that draining phenomenon not in time occurs, sometimes with regard to the safe operation of the whole station equipment of entail dangers to。Accordingly, it would be desirable to a kind of technical scheme solves the problems referred to above。
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of for transformer substation flood prevention flood control automatic alarm drainage arrangement, when flood situation occurs in transformer station, it is possible to timely automated warning, starts pumping drainage and notifies transformer station operator on duty。
For achieving the above object, this utility model realizes by the following technical solutions:
A kind of for transformer substation flood prevention flood control automatic alarm drainage system, this system includes warning line sensor, discharge level sensor, urgent level sensor, warning line sensor, discharge level sensor, urgent level sensor are arranged on the position, middle and lower part of collecting-tank inwall, and erection sequence is followed successively by warning line sensor, discharge level sensor, urgent level sensor from top to bottom；Collecting-tank is arranged on the transformer station indoor cable duct at low-lying place, cable interlayer place；Draining water pump is arranged on bottom collecting-tank；Described system also includes signal picker, signal picker is made up of signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit is connected with signal conversion unit, isolation amplifying unit and embedded micro computer successively order, embedded micro computer is provided with field-bus interface and industrial computer communication, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer；
Described system also includes PLC control unit, host computer, drainage unit, auxiliary reclay, draining water pump, GPRS wireless communication module A, GPRS wireless communication module B, GPRS network unit, modulation actuator, operator on duty's mobile phone；Described PLC control unit is connected with host computer, drainage unit, GPRS wireless communication module B respectively；Described GPRS wireless communication module A and GPRS wireless communication module B communicates；GPRS wireless communication module A is connected with GPRS network unit, and GPRS network unit communicates with modulation actuator and operator on duty's mobile phone respectively；Described drainage unit, auxiliary reclay, draining water pump are sequentially connected and connect。
Described signal conversion unit includes resistance R1～R11, impedance transformer GS1～GS6 and electrical switch S1～S7, exported respectively by tri-outfans of B1, B2, B3, latch SC it is provided with in unit, BX is the gating signal of latch SC, and the state of electrical switch S1～S7 is determined by the state of latch SC outfan D0, D1, D2；
Signal conversion unit converts the signal from signal access unit to standard voltage signal, signal conversion unit receives signal access unit output terminals A 1, A2 and A3 end signal, is converted to the output signal of the outfan B1 of regulation, B2 and B3 by the conditioning of signal conversion unit；Vout is additional reference voltage, and D2, D1 and D0 originate from the selectivity signal of the embedded micro computer of signal picker, to control the conversion of input signal。
Described Isolation Amplifier Module is by Capacitor apart assembly U1, operational amplifier U2, resistor network U3Composition, wherein Capacitor apart assembly U1By electrical switch Kc11、Kc12、Kc21、Kc22, electric capacity C1, C2 composition, electrical switch Kc11、Kc12、Kc21、Kc22Switch between input and output with fixing fast frequency；GL is Capacitor apart assembly U1Electrical switch gating signal, D0 low level is gating, and D0 is Capacitor apart assembly U1Electrical switch control signal, D0 low level time, KC11～KC22 is combined in the left side, and namely electric capacity C1 and C2 is stored in signal, and during D0 high level, signal passes to operational amplifier U2；Operational amplifier U2With resistor network U3Constitute programmable amplifier, resistor network U3It is made up of digital regulation resistance SD1, SD2 and SD3；Under the amplification selectivity signal of embedded micro computer, regulating the resistance of the digital regulation resistance SD1 of resistor network, SD2 and SD3。
This utility model is based on the GPRS of global system for mobile communications gprs system, mobile data services are transmitted with package formula, there is provided end to end, the transformer substation flood prevention flood control automatic alarm drainage arrangement of the wireless IP interconnection technique of wide area, this device is with programmable logic controller (PLC) PLC for kernel control chip, after adopting signal picker to process signal, according to using function by GPRS network unit, PLC control unit, signal picker, display unit, drainage unit four part composition, realize current level detection, water level indicates, Auto-drainage, auto-alarm function, have easy to operate, meet the unattended operation transformer station flood control flood control needs in flood season in summer。
Compared with prior art, the beneficial effects of the utility model are:
Native system is when flood situation occurs in transformer station, it is possible to timely automated warning, starts pumping drainage and notifies transformer station operator on duty。By warning line sensor, discharge level sensor, urgent level sensor, gather corresponding water level signal, after signal picker processes, realize total dynamic draining by PLC control unit and control, and remote alarming function。This system can realize current level detection, water level instruction, Auto-drainage, auto-alarm function, the feature such as have easy to operate, practical, reliable in action, be quick on the draw, is fully able to and meets the unattended operation transformer station flood control in flood season in summer and control flood needs。
Accompanying drawing explanation
Fig. 1 is system of the present utility model composition structural representation。
Fig. 2 is sensor draining water pump installation site schematic diagram in collecting-tank of the present utility model。
Fig. 3 is the structured flowchart of signal picker。
Fig. 4 is signal access unit schematic diagram。
Fig. 5 is signal conversion unit schematic diagram。
Fig. 6 is isolation amplifying unit schematic diagram。
Fig. 7 is embedded micro computer structure chart。
Detailed description of the invention
Below in conjunction with Figure of description, this utility model is described in detail, it should be noted that enforcement of the present utility model is not limited to following embodiment。
See shown in Fig. 1-Fig. 2, this utility model is based on the GPRS of global system for mobile communications gprs system, mobile data services are transmitted with package formula, there is provided end to end, the transformer substation flood prevention flood control automatic alarm drainage arrangement of the wireless IP interconnection technique of wide area, this device, with programmable logic controller (PLC) PLC for kernel control chip, is made up of GPRS network unit, PLC control unit, signal picker, display unit, four parts of drainage unit according to using function。
GPRS network unit includes controlling alarm center, modulation actuator, operator on duty's mobile phone, GPRS network unit, GPRS wireless communication module A, GPRS network unit adopts packet-switch technology, high efficiency of transmission is at a high speed or low speed data and signaling, it is provided that with the seamless link of available data net；RS485 EBI is adopted in unit, + 5～26V wide-range voltage is powered, after controlling alarm center, modulation actuator, operator on duty's mobile phone, GPRS network unit, GPRS wireless communication module A being connected by serial interface cable, can the mode of operation of dispensing unit, note receiving number, baud rate, and support transparent and two kinds of mode of operations of order, transparent operation pattern is bulk SMS function, and command job pattern is to send note one to one；Controlling alarm center adopts transparent operation pattern, it is provided with acoustic-optic alarm, also predeterminable maximum 5 transformer station's operator on duty's mobile phone 3 numbers, when signal picker detects alarm signal, PLC control unit starts short message sending function and sends alarming short message by GPRS wireless communication module B and GPRS wireless communication module A to operator on duty's mobile phone, and sends alarm signal to controlling alarm center by modulating actuator。
Kernel control chip PLC selects the 222CNAC/DC/RELAY of siemens PLC series, 8 railway digital amounts are had to input for connecting signal picker, No. 6 relay outputs are used for connecting drainage unit, 1 RS485 communication interface is used for connecting host computer, load power source module connects PLC direct current output DC24V power supply, power supply maximum load capability 500Ma, PLC control unit can realize collection and the process of signal picker water level signal, control the display lamp display module of display unit and the state of LCD display, numerical monitor, receive and perform the instruction that host computer sends, control the auxiliary reclay of drainage unit, water drain pump startup and stopping, GPRS wireless communication module B and A can be controlled simultaneously and launch warning message to GPRS network unit。
See Fig. 3, signal picker is made up of signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit is connected with signal conversion unit, isolation amplifying unit and embedded micro computer order successively, embedded micro computer is provided with field-bus interface and industrial computer communication, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer；Signal picker collection warning on-off model, drainage switch amount signal, emergency switch amount signal。
See Fig. 4, signal access unit is made up of three list 8 digital control simulant electronic switches of passage of UIN1, UIN2, UIN3 (such as CD4051 or CC4051), access signal gated after exported respectively by tri-outfans of A1, A2, A3, IN11, IN21 and IN31 are the 1st road signal input part, in like manner, IN18, IN28 and IN38 are the 8th road signal input part。QH is signal access unit gating signal, and low level is strobe state, and D2, D1 and D0 are input selectivity signal, and input signal is that timesharing accesses in order。Its gating and the control letter embedded micro computer from digital sampling and processing, its signal gating is all exported by A1, A2 and A3 after accessing and becomes unit to signal。
See Fig. 5, signal conversion unit is made up of resistance R1～R11, impedance transformer GS1～GS6 and electrical switch S1～S7, exported respectively by tri-outfans of B1, B2, B3, latch SC it is provided with in unit, BX is the gating signal of latch SC, and the state of electrical switch S1～S7 is determined by the state of latch SC outfan D0, D1, D2；
Signal conversion unit converts the signal from signal access unit to standard voltage signal。Signal conversion unit receives signal access unit output terminals A 1, A2 and A3 end signal, is converted to the output signal of the outfan B1 of regulation, B2 and B3 by the conditioning of signal conversion unit。Vout is additional reference voltage, and D2, D1 and D0 originate from the selectivity signal of the embedded micro computer of digital sampling and processing, to control the conversion of input signal。
Seeing Fig. 6, isolation amplifying unit is by Capacitor apart assembly U1, amplifier U2, resistor network U3Composition, wherein Capacitor apart assembly U1By electrical switch Kc11、Kc12、Kc21、Kc22, electric capacity C1, C2 composition, electrical switch Kc11、Kc12、Kc21、Kc22Switch between input and output with fixing fast frequency, it is achieved the isolation of sensor circuit and amplifying circuit；GL be capacitance switch formula isolation gating signal, low level is gating, D0 be capacitance switch control signal, amplify selectivity signal be all from embedded micro computer；This capacitance switch formula is isolated, and has highly reliable isolation characteristic, programmable amplifier, good linearity, and basis signal is selected range automatically, especially can guarantee that faint data signal is amplified undistorted。
During D0 low level, KC11～KC22 is combined in the left side, and namely electric capacity C1 and C2 is stored in signal, and during D0 high level, signal passes to operational amplifier U2；U2And U3Constitute programmable amplifier, namely, under the amplification selectivity signal of embedded micro computer, regulating the resistance of digital regulation resistance SD1, SD2 and SD3, it is achieved the change of amplification, namely changing the range of signal, and then improve the precision of signal conversion；Isolation amplifying unit achieves the reliable isolation of conditioning unit with amplifying circuit, and to control gain amplifying circuit and front end interference, the simultaneously size according to letter, the gain of its amplifying circuit selected, namely selects range, be referred to as programmable-gain automatically。
See Fig. 7, embedded micro computer includes A/D converter U4, reference voltage source, dsp controller U5 (such as TMS320C54X), temperature compensation sensor DS18B20, network interface U6 and memorizer U7, reference voltage source is connected with A/D converter, and A/D converter is connected with dsp controller by data/address bus DB1 and address bus AB1；Data/address bus DB is passed through in dsp controller one end2With address bus AB2Being connected with the network interface with fieldbus function, data/address bus DB is passed through in one end3With address bus AB3It is connected with memorizer；Temperature compensation sensor DS18B20 is connected with dsp controller, the output signal V of A/D converter reception amplifierout。In order to eliminate the impact that thermocouple certainty of measurement is produced by ambient temperature, dsp controller U5 connects a DS18B20 one-wire bus formula digital temperature sensor；Network interface U6 can adopt Profibus-DP and Modbus fieldbus, it is achieved with the communication of industrial computer；USB interface can be used for the renewal of program。
A/D converter adopts ± 18 high resolution A/D converters, such as Maxim product MAX132MRC chip, serial, low-power consumption, temperature range-55 DEG C～+125 DEG C；Dsp controller is the core component of data acquisition process, adopts the TMS320C2407 of moral thirty instrument (TI), 16 bit DSPs；Memorizer is read only memory；Network interface is exclusively used in Profibus-DP and Modbus fieldbus；Reference voltage source provides reference voltage for A/D converter, is generally adopted the high precision of 5V or 2.5V and galvanic current source；USB interface is the information of unloading setting or defeated necessity。
Warning line sensor, discharge level sensor, urgent level sensor are arranged on the position, middle and lower part of collecting-tank inwall, and erection sequence is followed successively by warning line sensor, discharge level sensor, urgent level sensor from top to bottom；Collecting-tank is arranged on the lowest point at indoor low-lying place of transformer station, and such as cable duct, cable interlayer etc., draining water pump is arranged on bottom collecting-tank；Each level sensor adopts static pressure type liquid level sensor, this sensor utilizes the measuring principle of hydrostatic pressure to work, Silicon pressure load cell is selected to convert the pressure measured to the signal of telecommunication, amplifying circuit then through signal picker amplifies and compensates circuit compensation, and then reconvert becomes on-off model three the digital quantity input port detections being sent directly in PLC control unit respectively by warning on-off model, drainage switch amount signal, emergency switch amount signal。
Display unit includes display lamp display module, LCD display, warning line display lamp, discharge level display lamp, urgent water level indicator light, malfunction indicator lamp, display unit is for showing the water level conditions state of whole device in real time, display lamp display module includes warning line display lamp, discharge level display lamp, urgent water level indicator light, the LED clearing lamp of four parts of malfunction indicator lamp, wherein malfunction indicator lamp part is used for detecting warning line sensor, discharge level sensor, urgent level sensor duty logical relation, if output logic mistake, then may determine that this level sensor occurs abnormal, then send the glittering information of warning；LCD display is LCDs, it is possible to show that the parameter of whole device arranges timely water level conditions state etc. simply and flexibly。
PLC control unit, drainage unit, auxiliary reclay, draining water pump are sequentially connected and connect, the electric current of water drain pump startup and operation is bigger, maximum reach 20A, PLC carrying load ability is nowhere near, therefore drainage unit adopts A.C. contactor switch, the relay output end mouth of the 222CNAC/DC/RELAY of siemens PLC series, output voltage DC24V, 220V or the 380V A.C. contactor that cannot directly drive draining water pump switchs, and thus needs to connect addition auxiliary reclay；PLC control unit detects when the drainage switch amount signal of discharge level sensor or urgent level sensor or emergency switch amount signal reach discharge level or urgent water level, and starting auxiliary reclay, draining water pump carries out draining。
Claims (3)
1. one kind is used for transformer substation flood prevention flood control automatic alarm drainage system, it is characterized in that: this system includes warning line sensor, discharge level sensor, urgent level sensor, warning line sensor, discharge level sensor, urgent level sensor are arranged on the position, middle and lower part of collecting-tank inwall, and erection sequence is followed successively by warning line sensor, discharge level sensor, urgent level sensor from top to bottom；Collecting-tank is arranged on the transformer station indoor cable duct at low-lying place, cable interlayer place；Draining water pump is arranged on bottom collecting-tank；Described system also includes signal picker, signal picker is made up of signal access unit, signal conversion unit, isolation amplifying unit and embedded micro computer, signal access unit is connected with signal conversion unit, isolation amplifying unit and embedded micro computer successively order, embedded micro computer is provided with field-bus interface and industrial computer communication, and the gating signal of signal access unit, signal conversion unit and isolation amplifying unit is all from embedded micro computer；
Described system also includes PLC control unit, host computer, drainage unit, auxiliary reclay, draining water pump, GPRS wireless communication module A, GPRS wireless communication module B, GPRS network unit, modulation actuator, operator on duty's mobile phone；Described PLC control unit is connected with host computer, drainage unit, GPRS wireless communication module B respectively；Described GPRS wireless communication module A and GPRS wireless communication module B communicates；GPRS wireless communication module A is connected with GPRS network unit, and GPRS network unit communicates with modulation actuator and operator on duty's mobile phone respectively；Described drainage unit, auxiliary reclay, draining water pump are sequentially connected and connect。
2. according to claim 1 for transformer substation flood prevention flood control automatic alarm drainage system, it is characterized in that: described signal conversion unit includes resistance R1～R11, impedance transformer GS1～GS6 and electrical switch S1～S7, exported respectively by tri-outfans of B1, B2, B3, latch SC it is provided with in unit, BX is the gating signal of latch SC, and the state of electrical switch S1～S7 is determined by the state of latch SC outfan D0, D1, D2；
Signal conversion unit receives signal access unit output terminals A 1, A2 and A3 end signal, is converted to the output signal of the outfan B1 of regulation, B2 and B3 by the conditioning of signal conversion unit；Vout is additional reference voltage, and D2, D1 and D0 originate from the gating signal of latch SC, to control the conversion of input signal。
3. according to claim 1 for transformer substation flood prevention flood control automatic alarm drainage system, it is characterised in that: described isolation amplifying unit is by Capacitor apart assembly U1, operational amplifier U2, resistor network U3Composition, wherein Capacitor apart assembly U1By electrical switch Kc11、Kc12、Kc21、Kc22, electric capacity C1, C2 composition, electrical switch Kc11、Kc12、Kc21、Kc22Switch between input and output with fixing fast frequency；GL is Capacitor apart assembly U1Electrical switch gating signal, D0 low level is gating, and D0 is Capacitor apart assembly U1Electrical switch control signal, D0 low level time, KC11～KC22 is combined in the left side, and namely electric capacity C1 and C2 is stored in signal, and during D0 high level, signal passes to operational amplifier U2；Operational amplifier U2With resistor network U3Constitute programmable amplifier, resistor network U3It is made up of digital regulation resistance SD1, SD2 and SD3；Under the amplification selectivity signal of embedded micro computer, regulating the resistance of the digital regulation resistance SD1 of resistor network, SD2 and SD3。
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| CN201520905169.1U CN205334167U (en) | 2015-11-12 | 2015-11-12 | Be used for flood prevention flood control automatic alarm drainage system of transformer substation |
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| CN201520905169.1U CN205334167U (en) | 2015-11-12 | 2015-11-12 | Be used for flood prevention flood control automatic alarm drainage system of transformer substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278427A (en) * | 2015-11-12 | 2016-01-27 | 国网辽宁省电力有限公司朝阳供电公司 | Flood prevention automatic alarm drainage system used for transformer substation |
| CN110647078A (en) * | 2019-09-26 | 2020-01-03 | 西安科技大学 | Underground unattended drainage system for coal mine and control method |
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2015
- 2015-11-12 CN CN201520905169.1U patent/CN205334167U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278427A (en) * | 2015-11-12 | 2016-01-27 | 国网辽宁省电力有限公司朝阳供电公司 | Flood prevention automatic alarm drainage system used for transformer substation |
| CN110647078A (en) * | 2019-09-26 | 2020-01-03 | 西安科技大学 | Underground unattended drainage system for coal mine and control method |
| CN110647078B (en) * | 2019-09-26 | 2020-10-16 | 西安科技大学 | Underground unattended drainage system for coal mine and control method |
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