CN204258440U - Low pressure blackouts monitoring terminal - Google Patents

Low pressure blackouts monitoring terminal Download PDF

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Publication number
CN204258440U
CN204258440U CN201420738088.2U CN201420738088U CN204258440U CN 204258440 U CN204258440 U CN 204258440U CN 201420738088 U CN201420738088 U CN 201420738088U CN 204258440 U CN204258440 U CN 204258440U
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China
Prior art keywords
ultracapacitor
power
low pressure
distribution line
monitoring terminal
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Active
Application number
CN201420738088.2U
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Chinese (zh)
Inventor
朱义勇
陈蕾
庄晓丹
苏毅方
卢峰
蒋建杰
张页
周安仁
刘笑园
季旭
张兵
林才富
钦伟
崔小菱
邢翼
王震宇
李波
聂峥
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State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd, Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201420738088.2U priority Critical patent/CN204258440U/en
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Publication of CN204258440U publication Critical patent/CN204258440U/en
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Abstract

The utility model discloses a kind of low pressure blackouts 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 low pressure blackouts monitoring terminal provides operating voltage, 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, 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.

Description

Low pressure blackouts monitoring terminal
Technical field
The utility model embodiment relates to a kind of low pressure blackouts monitoring terminal be supported in without report and alarm during externally fed.
Background technology
In distribution repairing work, the fault of nearly 70% is from low pressure 380V side, and be the position that cannot judge that low pressure has a power failure 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
Low pressure blackouts 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 low pressure blackouts 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 one embodiment, described constant-current charging circuit comprises a clamp circuit connected between described power supply and ultracapacitor C1, is configured to will be supplied to the Current Control of described ultracapacitor C1 at steady state value when saltus step appears in platform district distribution line.
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, low pressure blackouts 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 low pressure blackouts 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 low pressure blackouts monitoring terminal and change.
The utility model low pressure blackouts monitoring terminal 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 low pressure blackouts monitoring terminal supplying power, 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 low pressure blackouts 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 increases the safety in operation of low pressure blackouts monitoring terminal.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the utility model low pressure blackouts monitoring terminal.
Embodiment
With reference to Fig. 1, low pressure blackouts monitoring terminal is 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 1 for obtaining distribution line phase piezoelectric voltage, for the feature board 2 of described low pressure blackouts 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): the energy supporting low pressure blackouts monitoring terminal operating 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 low pressure blackouts monitoring terminal, requires that Neng Tai district at least can support low pressure blackouts monitoring terminal operating 1 minute after having a power failure;
Constant-current charging circuit (S1): for super capacitor provides constant charge current, the impulse current excessive normal operation affecting low pressure blackouts 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 comprises a clamp circuit connected between described power supply and ultracapacitor C1, is configured to will be supplied to the Current Control of described ultracapacitor C1 at steady state value when saltus step appears in platform district distribution line.
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, low pressure blackouts 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 low pressure blackouts 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, low pressure blackouts 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 low pressure blackouts monitoring office terminal feature board.
In one embodiment, the capacity of described ultracapacitor C1 is different according to the power consumption of low pressure blackouts monitoring terminal and change.
Low pressure blackouts monitoring terminal and far-end distribution management main station system with the use of, low pressure blackouts 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.Distribution management main station system, according to the information of low pressure blackouts monitoring terminal uplink, 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 (5)

1. low pressure blackouts 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 low pressure blackouts 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, 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.
2. low pressure blackouts monitoring terminal according to claim 1, 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.
3. low pressure blackouts monitoring terminal according to claim 2, it is characterized in that: described constant-current charging circuit comprises a clamp circuit connected between described power supply and ultracapacitor C1, is configured to will be supplied to the Current Control of described ultracapacitor C1 at steady state value when saltus step appears in platform district distribution line.
4. low pressure blackouts 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 low pressure blackouts 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, 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, by switching transistor D1, the working power of support function plate, by constant-current charging circuit S1 for ultracapacitor C1 provides constant current charge electric current, prevents that electric current loop flows back to road.
5. low pressure blackouts monitoring terminal according to claim 4, is characterized in that: the capacity of described ultracapacitor C1 is different according to the power consumption of low pressure blackouts monitoring terminal and change.
CN201420738088.2U 2014-11-28 2014-11-28 Low pressure blackouts monitoring terminal Active CN204258440U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104393682A (en) * 2014-11-28 2015-03-04 国家电网公司 Low-voltage power failure monitoring terminal and low-voltage circuit board
CN108448726A (en) * 2018-04-17 2018-08-24 宁波三星医疗电气股份有限公司 A kind of report method of electric system power-off event
CN108832719A (en) * 2018-06-28 2018-11-16 国家电网公司 Overhead transmission line power failure prior-warning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104393682A (en) * 2014-11-28 2015-03-04 国家电网公司 Low-voltage power failure monitoring terminal and low-voltage circuit board
CN108448726A (en) * 2018-04-17 2018-08-24 宁波三星医疗电气股份有限公司 A kind of report method of electric system power-off event
CN108832719A (en) * 2018-06-28 2018-11-16 国家电网公司 Overhead transmission line power failure prior-warning device

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