CN203705535U - Transformer station metering device voltage circuit alarm - Google Patents
Transformer station metering device voltage circuit alarm Download PDFInfo
- Publication number
- CN203705535U CN203705535U CN201320778895.2U CN201320778895U CN203705535U CN 203705535 U CN203705535 U CN 203705535U CN 201320778895 U CN201320778895 U CN 201320778895U CN 203705535 U CN203705535 U CN 203705535U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- alarm
- capacitor
- transformer station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a transformer station metering device voltage circuit alarm. The transformer station metering device voltage circuit alarm comprises an RS 485 communication circuit, an alarm circuit, a short-message communication circuit, a power supply circuit and a liquid crystal display. When the transformer station metering device voltage circuit alarm is in use, RS485 communication interfaces of an electric energy meter to be measured are connected together in parallel to be connected with an RS485 communication line of the alarm, communication is performed between the alarm and the electric energy meter through an RS 485 bus, real-time voltage information of metering devices is obtained, and a display circularly displays all the measured metering devices. An alarm short-message communication module is disposed in the alarm and can transmit abnormal voltage information in a short-message manner. The alarm is connected with a battery voltage monitoring chip through a CPU of the alarm to monitor battery electricity consumption states of a storage battery. The transformer station metering device voltage circuit alarm is advantageous in that the transformer station metering device voltage circuit alarm can judge voltage abnormalities of the metering devices in the first time and notify operation and maintenance personnel, so that the voltage abnormalities can be treated timely, and electricity record missing and metering disputes are reduced.
Description
Technical field
The utility model relates to a kind of transformer station measuring apparatus voltage circuit alarm.
Background technology
Transformer station's metering voltage circuit, intermediate link is numerous, therefore often occurs electric energy meter voltage abnormal occurrence (decompression accounts for more than 90%).When decompression appears in electric energy meter, will quit work and lose electric energy metrical effect, owing to lacking warning device, O&M personnel are difficult to find in the very first time, cause electric energy meter voltage-lose operation overlong time, cause a large amount of electric energy to leak meter, economic loss is serious, has buried hidden danger for metering dispute simultaneously, damages company reputation and image.
As shown in Figure 2, electric energy meter voltage never with bus passed through multiple links such as bus PT, PT cabinet arranged side by side, voltage switching device, ammeter combined connection box, middle any one link goes wrong, and (as wiring is loosening, relay fault, switching device shifter malfunctioning etc.) all can to cause electric energy meter voltage abnormal.Based on above phenomenon, need the new method and apparatus of development badly and assist O&M personnel to find in time electric energy meter voltage abnormal occurrence, reduce the electric energy meter voltage misoperation time.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, provide a kind of transformer station measuring apparatus voltage circuit alarm, electric voltage exception judged and to be notified in the very first time O&M personnel, to make electric voltage exception can be processed in time, reduce electric weight error of omission and metering dispute.
The utility model be technical solution problem by the following technical solutions.
Transformer station's measuring apparatus voltage circuit alarm, its design feature is to comprise RS485 telecommunication circuit, warning circuit, short message communication circuit, power circuit and display; Described warning circuit comprises tension measuring circuit and voltage comparator circuit;
Between tested electric energy meter and transformer, be provided with voltage transformer (VT); Described power circuit is connected with described voltage transformer (VT); The RS485 communication interface of tested electric energy meter is connected with described RS485 telecommunication circuit by RS485 bus; RS485 telecommunication circuit is connected with described tension measuring circuit; Described tension measuring circuit is connected with described voltage comparator circuit, and described voltage comparator circuit is also connected with described short message communication circuit; Described display is connected with described voltage comparator circuit.
The design feature of transformer station of the present utility model measuring apparatus voltage circuit alarm is also:
Described display is LCD display.
Described transformer station's measuring apparatus voltage circuit alarm also comprises accumulator; Described accumulator is connected with described power circuit.
As shown in Figure 3, described power circuit comprises that described power circuit comprises voltage stabilizing chip U1, capacitor C 1～C2 and electrochemical capacitor E1～E3; Described capacitor C 1, capacitor C 2, electrochemical capacitor E1～E3 are all connected with described voltage stabilizing chip U1; One end after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another; One end after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another.
As shown in Figure 4, described short message communication circuit comprises wireless communication chips U2, SIM card chip U3, capacitor C 3～C6, resistance R 1～R3; Wireless communication chips U2 is connected with voltage comparator circuit;
Described capacitor C 3 is connected with SIM card chip U3 by described resistance R 1; Described capacitor C 4 is connected with SIM card chip U3 by described resistance R 2; Described capacitor C 5 is connected with SIM card chip U3; Described resistance R 3 is connected with capacitor C 6, and tie point between described resistance R 3 and capacitor C 6 is connected with SIM card chip U3; Between wireless communication chips U2 and SIM card chip U3, be connected.
Compared with the prior art, the utility model beneficial effect is embodied in:
Transformer station of the present utility model measuring apparatus voltage circuit alarm, adopt 24V DC power supply, can monitor 8-32 electric energy meter simultaneously, realize and in the very first time, electric voltage exception is judged and notified O&M personnel, operation maintenance personnel can be in the very first time on site fault clearing, electric voltage exception can be processed in time, reduce electric weight error of omission and metering dispute.
1, the utility model can be reported to the police at once in the time of substation electric energy meter electric voltage exception, and fault can be resolved in the shortest time, reduces impact user being caused because of electric voltage exception, thereby greatly improves the good service level of power supply;
2, the utility model is connected in voltage transformer secondary side, can carry out monitoring, alarming to the voltage of different electric pressures with various standards;
3, the utlity model has accumulator, still can complete warning function under power-off condition, reliability is high;
4, the utility model integrated level is high, and volume is small and exquisite, and in parallel with electric energy meter, wiring is simple, can directly be installed in batch meter, is convenient to install.
Transformer station of the present utility model measuring apparatus voltage circuit alarm,, have and can in the very first time, electric voltage exception be judged and be notified O&M personnel, make electric voltage exception can be processed in time, reduce that electric weight is failed to record and the advantage such as metering dispute being arranged on the voltage circuit Real-Time Monitoring of measuring apparatus in transformer station for power supply department.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of transformer station of the present utility model measuring apparatus voltage circuit alarm.
Fig. 2 is substation electric energy meter voltage circuit electrical schematic diagram.
Fig. 3 is the circuit diagram of the power circuit of transformer station of the present utility model measuring apparatus voltage circuit alarm.
Fig. 4 is the circuit diagram of the short message communication circuit of transformer station of the present utility model measuring apparatus voltage circuit alarm.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1, transformer station's measuring apparatus voltage circuit alarm, it comprises RS485 telecommunication circuit, warning circuit, short message communication circuit, power circuit and display; Described warning circuit comprises tension measuring circuit and voltage comparator circuit;
Between tested electric energy meter and transformer, be provided with voltage transformer (VT); Described power circuit is connected with described voltage transformer (VT); The RS485 communication interface of tested electric energy meter is connected with described RS485 telecommunication circuit by RS485 bus; RS485 telecommunication circuit is connected with described tension measuring circuit; Described tension measuring circuit is connected with described voltage comparator circuit, and described voltage comparator circuit is also connected with described short message communication circuit; Described display is connected with described voltage comparator circuit.
When use, the RS485 communication interface of tested electric energy meter is connected together, be connected with the RS485 telecommunication circuit of alarm, alarm communicates by the tested electric energy meter of RS485 bus, obtains the real-time voltage information of measuring apparatus, and display circulation shows the information of voltage of each tested measuring apparatus.On the panel of described alarm, be provided with mailing address for tested electric energy meter is set and the button of querying command, and hummer and the light emitting diode that onsite alarming is used is set; In described alarm, there is the short message communication module of warning, abnormal voltage information can be sent with note form; Described alarm is connected with battery voltage monitoring chip with its CPU, to monitor accumulator battery electricity consumption situation.The RS485 interface of described RS485 telecommunication circuit and tested electric energy meter (can in parallel 16 electric energy meters) is connected in parallel by Shielded Twisted Pair.
Power circuit of the present utility model obtains voltage with metering with the electric energy meter voltage transformer secondary side that is wired in parallel.Power circuit is taken from voltage transformer secondary side voltage, is single-phase AC 220V or single-phase AC 100V, and simultaneously with accumulator, transformer station's temp. after power cut is enough realized warning function.
The utility model obtains the information of the voltage circuit of measuring apparatus with the RS485 interface of electric energy meter tie user with metering by RS485 circuit, electric energy meter, voltage transformer (VT), current transformer and the connecting line of tested measuring apparatus form a set of measuring apparatus completing, electric energy meter itself can measuring loop voltage value, alarm is communicated by letter with electric energy meter and is obtained measuring apparatus voltage value by RS485 bus, the rated voltage numerical value of the voltage value reading and setting is compared, and when in difference hyperline, voltage transformer secondary side obtains voltage to be monitored.Self working power is taken from transformer station's non-stop run power supply (direct current 24V accumulator), and transformer station's temp. after power cut is enough realized warning function.The wherein real-time measuring voltage of tension measuring circuit, digital signal measurement result is provided, and to voltage comparator circuit, analysis judges that whether voltage is abnormal, in the time judging electric voltage exception, send warning short message by SMS short message communication circuit to specifying on operation maintenance personnel's mobile phone, complete alarm procedure.
Described display is LCD display.
Described transformer station's measuring apparatus voltage circuit alarm also comprises accumulator; Described accumulator is connected with described power circuit.Due to accumulator, after transformer station has a power failure, be alarm power supply by accumulator, still can realize warning function, warning function can not stop because of power failure.
As shown in Figure 3, described power circuit comprises that described power circuit comprises voltage stabilizing chip U1, capacitor C 1～C2 and electrochemical capacitor E1～E3; Described capacitor C 1, capacitor C 2, electrochemical capacitor E1～E3 are all connected with described voltage stabilizing chip U1; One end after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another; One end after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another.
As Fig. 3, voltage stabilizing chip U1 is three proper power supply stabilization circuit L7805.L7805 is one three and rectifies power supply integrated regulator.The built-in short-circuit protection of this circuit and thermal protection circuit, have the fixing feature of output voltage, is widely used in doing power supply voltage stabilizing in the equipment such as various televisors, radio cassette player, electronic device.L7805 adopts the packing forms encapsulation of three lead-in wires with heat radiator plastics TO-220.One end that described capacitor C 1, electrochemical capacitor E1 and E2 are in parallel after being connected is connected with described voltage stabilizing chip U3; Other end ground connection.One end after described capacitor C 2 is connected in parallel with described electrochemical capacitor E3 is connected with described voltage stabilizing chip U3, other end ground connection.
As shown in Figure 4, described short message communication circuit comprises wireless communication chips U2, SIM card chip U3, capacitor C 3～C6, resistance R 1～R3; Wireless communication chips U2 is connected with voltage comparator circuit;
Described capacitor C 3 is connected with SIM card chip U3 by described resistance R 1; Described capacitor C 4 is connected with SIM card chip U3 by described resistance R 2; Described capacitor C 5 is connected with SIM card chip U3; Described resistance R 3 is connected with capacitor C 6, and tie point between described resistance R 3 and capacitor C 6 is connected with SIM card chip U3; Between wireless communication chips U2 and SIM card chip U3, be connected.
Described wireless communication chips U2 is M590E communication module.M590E communication module is the GSM/GPRS wireless industrial module of a Dual Band, and the function such as note, data service is provided, and is widely used in various industry and civil area, has following feature: 1) low in energy consumption: stand-by power consumption 2.5mA; 2) temperature is roomy :-40-80 ℃; 3) the CMUX function of support serial ports; 4) open 1Kbytes data field for client; 8) unique AES software cryptography function.
As Fig. 4, wireless communication chips U2 is connected with SIM card chip U3, can realize radio communication function, the alerting signal that voltage comparator circuit sends can be sent out by wireless communication chips U2 and SIM card chip U3, in the very first time, electric voltage exception judged and notified O&M personnel, make electric voltage exception can be processed in time, reduce electric weight error of omission and metering dispute.
Operation maintenance personnel's mobile phone receives warning message, can determine where occurred which kind of fault according to warning message, thereby with going fault in-situ to fix a breakdown before corresponding maintenance maintenance instrument, thereby make transformer station's measuring apparatus to obtain maintenance maintenance in the very first time, guarantee the metering accuracy of transformer station's measuring apparatus, avoid producing between power supply unit and user the dispute on Electro-metering, improve the intelligent level of using electricity system, facilitated power supply unit to get rid of the fault of long-range transformer station's measuring apparatus.
Claims (5)
1. transformer station's measuring apparatus voltage circuit alarm, is characterized in that, comprises RS485 telecommunication circuit, warning circuit, short message communication circuit, power circuit and display; Described warning circuit comprises tension measuring circuit and voltage comparator circuit;
Between tested electric energy meter and transformer, be provided with voltage transformer (VT); Described power circuit is connected with described voltage transformer (VT); The RS485 communication interface of tested electric energy meter is connected with described RS485 telecommunication circuit by RS485 bus; RS485 telecommunication circuit is connected with described tension measuring circuit; Described tension measuring circuit is connected with described voltage comparator circuit, and described voltage comparator circuit is also connected with described short message communication circuit; Described display is connected with described voltage comparator circuit.
2. transformer station according to claim 1 measuring apparatus voltage circuit alarm, is characterized in that, described display is LCD display.
3. transformer station according to claim 1 measuring apparatus voltage circuit alarm, is characterized in that, also comprises accumulator; Described accumulator is connected with described power circuit.
4. transformer station according to claim 1 measuring apparatus voltage circuit alarm, is characterized in that, described power circuit comprises voltage stabilizing chip U1, capacitor C 1～C2 and electrochemical capacitor E1～E3; Described capacitor C 1, capacitor C 2, electrochemical capacitor E1～E3 are all connected with described voltage stabilizing chip U1; One end after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 1, electrochemical capacitor E1, electrochemical capacitor E2 connection parallel with one another; One end after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another is connected with described voltage stabilizing chip U1, the other end ground connection after described capacitor C 2, electrochemical capacitor E3 connection parallel with one another.
5. transformer station according to claim 1 measuring apparatus voltage circuit alarm, is characterized in that, described short message communication circuit comprises wireless communication chips U2, SIM card chip U3, capacitor C 3～C6, resistance R 1～R3; Wireless communication chips U2 is connected with voltage comparator circuit;
Described capacitor C 3 is connected with SIM card chip U3 by described resistance R 1; Described capacitor C 4 is connected with SIM card chip U3 by described resistance R 2; Described capacitor C 5 is connected with SIM card chip U3; Described resistance R 3 is connected with capacitor C 6, and tie point between described resistance R 3 and capacitor C 6 is connected with SIM card chip U3; Between wireless communication chips U2 and SIM card chip U3, be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778895.2U CN203705535U (en) | 2013-11-29 | 2013-11-29 | Transformer station metering device voltage circuit alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778895.2U CN203705535U (en) | 2013-11-29 | 2013-11-29 | Transformer station metering device voltage circuit alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705535U true CN203705535U (en) | 2014-07-09 |
Family
ID=51055955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320778895.2U Expired - Fee Related CN203705535U (en) | 2013-11-29 | 2013-11-29 | Transformer station metering device voltage circuit alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203705535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592507A (en) * | 2013-11-29 | 2014-02-19 | 国网安徽省电力公司淮南供电公司 | Voltage loop alarm for metering devices of transformer station |
-
2013
- 2013-11-29 CN CN201320778895.2U patent/CN203705535U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592507A (en) * | 2013-11-29 | 2014-02-19 | 国网安徽省电力公司淮南供电公司 | Voltage loop alarm for metering devices of transformer station |
| CN103592507B (en) * | 2013-11-29 | 2017-08-08 | 国网安徽省电力公司淮南供电公司 | Transformer station's metering device voltage circuit alarm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104597398A (en) | Intelligent pluggable circuit breaker and monitoring and pre-warning system thereof | |
| CN101281229A (en) | Power distribution network distribution circuit fault location system | |
| CN204241594U (en) | A kind of real-time monitoring system for substation transformer operating condition | |
| CN201051018Y (en) | Switch case contact temperature monitoring and alarming system | |
| CN103457357B (en) | A kind of transformer online information management system | |
| CN103401308A (en) | Outdoor box-type transformer substation protection system | |
| CN204374379U (en) | Intelligent plug-pull type breaker system | |
| CN202141776U (en) | Online fault detection system of 10kV fuse protector | |
| CN103592507B (en) | Transformer station's metering device voltage circuit alarm | |
| CN203376434U (en) | A current transformer polarity verification apparatus | |
| CN201804428U (en) | Temperature wireless monitoring system for low-voltage power distribution cabinet | |
| CN101726687A (en) | Method for monitoring one-point grounding of secondary neutral point of voltage transformer between transformer substation and power plant | |
| CN203444057U (en) | Power transmission line fault indictor | |
| CN203705535U (en) | Transformer station metering device voltage circuit alarm | |
| CN205177729U (en) | Multifunctional circuit breakers | |
| CN201993434U (en) | System for quickly positioning distribution network faults based on wireless sensor network | |
| CN202471271U (en) | On-line temperature measurement system for high-voltage switch cabinet | |
| CN104678756A (en) | Novel intelligent comprehensive power transformation and distribution monitoring system | |
| CN108645539A (en) | A kind of magnetic-levitation train electrical cabinet temperature online condition monitoring system | |
| CN205246796U (en) | Used leakance electricity fault detection of transformer substation device | |
| CN204631193U (en) | A kind of separate type low voltage failure cable identification device | |
| CN203930036U (en) | A kind of three-phase overvoltage protector revise instrument | |
| CN206378569U (en) | A kind of voltage relay abnormal detector | |
| CN112526331A (en) | Circuit breaker loop current monitoring device | |
| CN104808115A (en) | Split acquisition terminal for recognition of low-voltage faulted cables |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20211129 |