CN204179759U - Public distribution transformer monitoring terminal - Google Patents
Public distribution transformer monitoring terminal Download PDFInfo
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- CN204179759U CN204179759U CN201420736474.8U CN201420736474U CN204179759U CN 204179759 U CN204179759 U CN 204179759U CN 201420736474 U CN201420736474 U CN 201420736474U CN 204179759 U CN204179759 U CN 204179759U
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- monitoring terminal
- ultracapacitor
- distribution transformer
- transformer monitoring
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 55
- 238000007600 charging Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 11
- 238000010277 constant-current charging Methods 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 229910018095 Ni-MH Inorganic materials 0.000 description 6
- 229910018477 Ni—MH Inorganic materials 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000010937 topological data analysis Methods 0.000 description 1
Abstract
The utility model discloses a kind of public distribution transformer monitoring terminal, for gathering public change side energy information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, comprise the electric power management circuit be installed between described power supply and feature board further, for controlling the charging and discharging of described power supply to feature board.
Description
Technical field
The utility model embodiment relates to a kind of public distribution transformer monitoring terminal (being called for short public transformer terminals) possessing charging/discharging function.
Background technology
Public transformer terminals is public distribution transformer comprehensive monitoring terminal, and realize public change side acquiring electric energy information, comprise data acquisition for electric energy, distribution transformer and switch monitoring running state, power quality is monitored, and realizes management and remote transmission to the data gathered.Go back the functions such as accessible site metering, reactive power compensation, the voltage examination of platform district simultaneously.
For the power supply situation realizing platform district power failure Hou Jiangtai district reports main website in time, usually require that public transformer terminals has a power failure in platform district follow-up reforwarding row 1 ~ 5 minute.Therefore existing public transformer terminals is usually with stand-by power supply, and now conventional stand-by power supply is chargeable lithium cell or Ni-MH battery.But due to the impact of unreasonable, the ambient temperature of battery management circuit and its shelf-life of battery limited, after 1 ~ 2 year, the capacity of this battery is by large high attenuation, even cannot support that public transformer terminals continues the operation of 1 ~ 5 minute, also just have impact on the realization of public transformer terminals function.Therefore existing management system requires just to need every 1 ~ 2 year to change reserve battery, and this adds maintenance workload on the one hand, also considerably increases maintenance cost on the other hand.
In addition, the nominal operating temperature scope of Ni-MH battery and lithium battery only has-20 DEG C-60 DEG C, under summer high temperature condition, outdoor on-the-spot temperature will exceed this nominal operating temperature scope, under some harsh conditions, lithium battery can produce the situations such as high temperature bulge even bursts, thus greatly have impact on the safety in utilization of public transformer terminals.
In distribution repairing work, the fault of nearly 70% is from low pressure 380V side, and be the position that cannot judge public distribution transformer by current monitoring means, power office cannot understand the power-off condition of low-voltage customer in time, after receiving customer complaint, often just know that this user has a power failure, thus reduce service quality, increase the rate of complaints of user.
For understanding the blackout condition of low-voltage customer in time, usually can install distribution transformer monitoring terminal at low-voltage customer end, the stand-by power supply utilizing it built-in realizes power-off fault and reports to the police.Now conventional stand-by power supply is chargeable lithium cell or Ni-MH battery.But due to the impact of unreasonable, the ambient temperature of battery management circuit and its shelf-life of battery limited, after 1 ~ 2 year, the capacity of this battery is by large high attenuation, even cannot support that public transformer terminals continues the operation of 1 ~ 5 minute, also just have impact on the realization of distribution transformer monitoring terminal function.Therefore existing management system requires just to need every 1 ~ 2 year to change reserve battery, and this adds maintenance workload on the one hand, also considerably increases maintenance cost on the other hand.
In addition, the nominal operating temperature scope of Ni-MH battery and lithium battery only has-20 DEG C-60 DEG C, under summer high temperature condition, outdoor on-the-spot temperature will exceed this nominal operating temperature scope, under some harsh conditions, lithium battery can produce the situations such as high temperature bulge even bursts, thus greatly have impact on the safety in utilization of distribution transformer monitoring terminal.
On the other hand, distribution transformer monitoring terminal cost is higher, and volume is comparatively large, generally can only be arranged on distribution transformer side, cannot be arranged on the table case place of corridor.Therefore can only manage the power supply situation in whole district, cannot manage the even each user of each corridor, its management intensity cannot meet the requirement of taking the initiative in offering a hand.
Utility model content
The utility model embodiment proposes a kind of public distribution transformer monitoring terminal, for gathering public change side energy information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, it comprises the electric power management circuit be installed between described power supply and feature board further, for controlling the charging and discharging of described power supply to feature board, described electric power management circuit is by ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1 forms, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
In one embodiment, described switching transistor D1 is set to multilevel diode, to be configured to the output voltage of ultracapacitor C1, lower than supply voltage, make to be powered to described feature board by main power source when platform district distribution line powers on.
In another embodiment, provide a kind of low-voltage circuit plate, connect distribution line three-phase voltage, comprising: the power panel connecting distribution line three-phase voltage, is converted to low-voltage power supply voltage by three phase mains; Feature board, for monitoring distribution line three-phase voltage power-down conditions to be prompted to far-end main station system power down information; And the auxiliary electrical source plate be connected between described power supply and feature board, its feeder ear P connects the output Vdc of power panel, and zero line side N connects the earth terminal GND of power panel, and this auxiliary electrical source plate controls the charging and discharging of described power supply to feature board.
In one embodiment, described auxiliary electrical source plate is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
In one embodiment, the capacity of described ultracapacitor C1 is different according to the power consumption of feature board and change.
In another embodiment, public distribution transformer monitoring terminal, for monitoring distribution line three-phase voltage power-down conditions to be prompted to far-end main station system power down information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, comprise further: be installed in the electric power management circuit between described power supply and feature board, for controlling the charging and discharging of described power supply to feature board; And communication ends, connected by ad Hoc wireless network and far-end main station system.
In one embodiment, described electric power management circuit is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
In one embodiment, the capacity of described ultracapacitor C1 is different according to the power consumption of public distribution transformer monitoring terminal and change.
The public distribution transformer monitoring terminal of the utility model has abandoned Ni-MH battery or the lithium battery of distribution transformer monitoring terminal, with super capacitor for it.Super capacitor be a kind of between traditional capacitor and battery, there is the power supply of property, mainly rely on electric double layer and redox capacitance charge store electrical energy.But chemical reaction does not occur in the process of its energy storage, this thermal energy storage process is reversible.Therefore super capacitor has the obvious advantages such as power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range is wide.
Super capacitor is replaced chargeable lithium cell, Ni-MH battery by the utility model, there is the following advantage: (1) substantially increases the useful life of public distribution transformer monitoring terminal power supply, achieve the really non-maintaining of stand-by power supply, thus significantly reduce workload and the maintenance cost of public transformer terminals on-site maintenance; (2) improve the operating temperature range of public distribution transformer monitoring terminal, the nominal operating temperature of super capacitor can reach-25 DEG C ~ 60 DEG C, and there is not the problems such as high temperature bulge explosion, thus substantially increase the safety in operation of public distribution transformer monitoring terminal.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the public distribution transformer monitoring terminal of the utility model;
Fig. 2 is the circuit diagram of constant-current charging circuit.
Embodiment
With reference to Fig. 1, public distribution transformer monitoring terminal is the instrument for monitoring distribution line power distribution information, comprise the power supply 1 for obtaining distribution line phase piezoelectric voltage, for the feature board 2 of described public distribution transformer monitoring terminal provides operating voltage Vdc, it comprises the electric power management circuit be installed between described power supply 1 and feature board 2 further, for controlling the charging and discharging of described power supply to feature board.
In one embodiment, described electric power management circuit is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1, wherein:
Ultracapacitor (C1): support the energy that public distribution transformer monitoring terminal runs after having a power failure in order to storage bed district distribution line, the capacity of ultracapacitor (C1) need be determined by the power consumption of public distribution transformer monitoring terminal, requires that Neng Tai district at least can support that public distribution transformer monitoring terminal runs 1 minute after having a power failure;
Constant-current charging circuit (S1): for super capacitor provides constant charge current, the normal operation of the excessive impact of impulse current public distribution transformer monitoring terminal when avoiding electrical network distribution line to power on;
Parallel diode (D1): realization is in parallel with power supply 1, avoids the circulation of generation current.In actual use, D1 can be formed by multiple Diode series, makes ultracapacitor output voltage a little less than main power source, to ensure to be powered by main power source under normal circumstances.
In one embodiment, described switching transistor D1 is set to multilevel diode, to be configured to the output voltage of ultracapacitor C1, lower than supply voltage, make to be powered to described feature board by main power source when platform district distribution line powers on.
In one embodiment, described constant-current charging circuit S1 comprises base stage interconnective triode Q1, Q2, and the resistance R2 connected respectively, R1, and and accesses ultracapacitor C1 to control its charging current.When distribution line powers on, triode Q1, Q2 is operated in magnifying state, and constant-current charging circuit S1 to the charging current of ultracapacitor C1 is:
Wherein β is the current amplification factor of triode Q1, Q2, I
r1, I
r2be respectively the electric current flowing through resistance R1, R2, wherein, as the currentamplificationfactorβ > > 1 of triode Q1, Q2, charging current I
charge≈ I
r1=0.7/R1.
In another embodiment, provide a kind of low-voltage circuit plate, connect distribution line three-phase voltage, comprising: the power panel connecting distribution line three-phase voltage, is converted to low-voltage power supply voltage by three phase mains; Feature board, for monitoring distribution line three-phase voltage power-down conditions to be prompted to far-end main station system power down information; And the auxiliary electrical source plate be connected between described power supply and feature board, its feeder ear P connects the output Vdc of power panel, and zero line side N connects the earth terminal GND of power panel, and this auxiliary electrical source plate controls the charging and discharging of described power supply to feature board.
In one embodiment, described auxiliary electrical source plate is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
In one embodiment, the capacity of described ultracapacitor C1 is different according to the power consumption of feature board and change.
In another embodiment, public distribution transformer monitoring terminal, for monitoring distribution line three-phase voltage power-down conditions to be prompted to far-end main station system power down information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, comprise further: be installed in the electric power management circuit between described power supply and feature board, for controlling the charging and discharging of described power supply to feature board; And communication ends, connected by ad Hoc wireless network and far-end main station system.
In one embodiment, described electric power management circuit is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
As shown in Figure 1, public distributing transformer monitoring office terminal is inner, the P end of the management of charging and discharging module of super capacitor is connected with the output Vdc of main power source, N end is connected with the ground GND of main power source, input supply terminal BK holds with the Vcc of power supply 1 and is connected, thus achieves the management of charging and discharging module of ultracapacitor C1 and use with the in parallel of main power source.After the power-up, first power supply 1 is charged to super capacitor (C1) by constant-current charging circuit (S1).After Er Tai district distribution line has a power failure, then ultracapacitor (C1) is by the power supply of diode (D1) realization to public distributing transformer monitoring office terminal feature board.
In one embodiment, the capacity of described ultracapacitor C1 is different according to the power consumption of public distribution transformer monitoring terminal and change.
Public distribution transformer monitoring terminal and far-end distribution management main station system with the use of, public distribution transformer monitoring terminal Real-Time Monitoring three-phase phase voltage, once find that there is a phase or ployphase voltages dead electricity, then the timely power failure state by electricity consumption scene reports distribution management main station system.The information that distribution management main station system is up according to public distribution transformer monitoring terminal, realizes fault location in conjunction with distribution topological analysis.And failure analysis result is carried out issuing and keeping in repair send work, realize taking the initiative in offering a hand.
Claims (8)
1. public distribution transformer monitoring terminal, for gathering public change side energy information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, it is characterized in that comprising the electric power management circuit be installed between described power supply and feature board further, for controlling the charging and discharging of described power supply to feature board.
2. public distribution transformer monitoring terminal according to claim 1, it is characterized in that: described electric power management circuit is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
3. public distribution transformer monitoring terminal according to claim 2, it is characterized in that: described switching transistor D1 is set to multilevel diode, to be configured to the output voltage of ultracapacitor C1, lower than supply voltage, make to be powered to described feature board by main power source when platform district distribution line powers on.
4. public distribution transformer monitoring terminal according to claim 2, it is characterized in that: described constant-current charging circuit S1 comprises base stage interconnective triode Q1, Q2, and the resistance R2 connected respectively, R1, and and access ultracapacitor C1 to control its charging current.
5. public distribution transformer monitoring terminal according to claim 2, it is characterized in that: when distribution line powers on, triode Q1, Q2 is operated in magnifying state, and constant-current charging circuit S1 to the charging current of ultracapacitor C1 is:
Wherein β is the current amplification factor of triode Q1, Q2, I
r1, I
r2be respectively the electric current flowing through resistance R1, R2, wherein, as the currentamplificationfactorβ > > 1 of triode Q1, Q2, charging current I
charge≈ I
r1=0.7/R1.
6. public distribution transformer monitoring terminal, for monitoring distribution line three-phase voltage power-down conditions to be prompted to far-end main station system power down information, comprise the power supply for obtaining distribution line phase piezoelectric voltage, for the feature board of described public distribution transformer monitoring terminal provides operating voltage, it is characterized in that comprising further: be installed in the electric power management circuit between described power supply and feature board, for controlling the charging and discharging of described power supply to feature board; And communication ends, connected by ad Hoc wireless network and far-end main station system.
7. public distribution transformer monitoring terminal according to claim 6, it is characterized in that: described electric power management circuit is made up of ultracapacitor C1, constant-current charging circuit S1 and switching transistor D1, wherein when platform district distribution line powers on power down, ultracapacitor C1 carries out charging and discharging respectively, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevent that electric current loop flows back to road by switching transistor D1.
8. public distribution transformer monitoring terminal according to claim 6, is characterized in that: the capacity of described ultracapacitor C1 is different according to the power consumption of public distribution transformer monitoring terminal and change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736474.8U CN204179759U (en) | 2014-11-28 | 2014-11-28 | Public distribution transformer monitoring terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736474.8U CN204179759U (en) | 2014-11-28 | 2014-11-28 | Public distribution transformer monitoring terminal |
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| CN204179759U true CN204179759U (en) | 2015-02-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377833A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Public power distribution transformer monitoring terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377833A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Public power distribution transformer monitoring terminal |
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