CN104901418A - Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system - Google Patents
Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system Download PDFInfo
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- CN104901418A CN104901418A CN201510354777.2A CN201510354777A CN104901418A CN 104901418 A CN104901418 A CN 104901418A CN 201510354777 A CN201510354777 A CN 201510354777A CN 104901418 A CN104901418 A CN 104901418A
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Abstract
The present invention discloses a transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system. The system is characterized in that the system comprises a commercial power socket (1); the commercial power socket (1) is connected with a rectifier module (5); the rectifier module (5) is individually connected with a dispatching IP telephone (4), a bi-directional power converter (6) and an inverter (9); the bi-directional power converter (6) is connected with a function switch (7); the function switch (7) is connected with a lithium battery pack (8); and the inverter (9) is connected with an information terminal (2). The system provided by the present invention is multi-functional integral-type equipment, can provide both direct current and alternating current, and is small in size, long in service life, safe, stable and reliable.
Description
Technical field:
The present invention relates to power grid enterprises' power communication and information terminal apparatus power supply, particularly relate to the uninterrupted supplied by AC/DC electricity system of a kind of transformer substation communication terminal, belong to technical field of electric power communication.
Background technology:
Along with the development of science and technology, electric power enterprise transformer station major part realizes unattended operation by automated system, configuration monitoring terminal in transformer station, in on-the-spot switching manipulation O&M maintenance process, check substation system scheme figure, operation order, work ticket etc., meet Dynamic System needs.Power dispatching telephone also brings into use the IP phone of advanced technology, for power dispatching telephone, requires the reliability of height, not only under normal circumstances, and under harsh climate condition and when electric power system has an accident, also must ensure that phone is unimpeded.The safety of safe and stable operation to electrical network of the two has indispensable significance.Transformer station's existing communication DC power system is general it is considered that power for the communication equipment in communications equipment room, do not consider the power demands of master-control room information terminal and new clothes IP phone in station, the power supply of the two is all adopt alternating current 220V mains-supplied (see Fig. 1) in station at present.The accessory power supply 3 of power consumption equipment information terminal 2 and scheduling IP phone 4, being connected to commercial power socket 1(scheduling IP phone 4 by electric power plug socket needs powered by direct current, through accessory power supply 3, alternating current 220V civil power is converted to direct current)., there is larger potential safety hazard in this kind of supply power mode, is mainly reflected in following 2 points: one is that electric power plug socket breaks down power-off, then internal information terminal of standing and IP phone power-off are simultaneously shut down.Two is once electrical network has an accident, and transformer station stands dead electricity entirely, then cause equally the two all power-off shut down, its due effect cannot be played.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art and provide a kind of integral-type equipment that adopts both can provide direct current, alternating current can be provided again, volume is little, long service life, the uninterrupted supplied by AC/DC electricity system of the reliable a kind of transformer substation communication terminal of safety and stability.
Object of the present invention can be reached by following measure: the uninterrupted supplied by AC/DC electricity system of a kind of transformer substation communication terminal, it is characterized in that it comprises commercial power socket, commercial power socket connects rectification module, rectification module connects scheduling IP phone, bidirectional power converter, inverter respectively, bidirectional power converter linkage function switch, functional switch connects lithium battery group, inverter link information terminal.
The present invention can produce following good effect compared with the prior art: instant invention overcomes existing supply power mode single, the standby shortcoming ensureing power supply without male offspring, adopt integral-type equipment both can provide direct current, alternating current can be provided again, also have the accumulation of energy of lithium battery group, safety and stability is reliable simultaneously.When losing suddenly electric main, still can in reasonable time, guarantee information terminal and dispatching telephone normally use.Set of the present invention accessory power supply, inverter and storage battery function, in one, adopt low-power consumption, high energy storage means, small in volume, easy to use and flexible.
Alternating current 220V civil power input of the present invention, by rectification module, exports direct current, powers (removing accessory power supply) directly to scheduling IP phone; There is provided alternating current to export by inverter, for information terminal provides the power supply of safety and stability simultaneously.Alternating current 220V civil power is powered to information terminal after the rectification and inversion of low-power consumption, can isolate the impact of voltage ripple of power network and thunder and lightning, the safety of guarantee information terminal.Meanwhile, direct current by bidirectional power converter and functional switch to lithium battery group charging energy-storing.
The advantages such as bidirectional power converter is compared and traditional utilized two check configuration to realize the scheme of energy two-way transmission, and have and use power device few, volume is little, the high and quick switching transmission direction of power density.In direct current uniterruptible power system, when civil power is normal, electrical network by bidirectional power converter to lithium battery group charging energy-storing, when the under-voltage operation of civil power or power-off time, then by bidirectional power converter to DC load and inverter power supply to provide the load energy, the continuity to load supplying when ensureing municipal power failure.
Adopt the energy storage of lithium battery group, be having extended cycle life due to lithium battery, discharge platform is mild, the voltage of single battery is high, and energy density height i.e. battery are relatively lighter, and the cycle life of lead-acid battery is poor, energy heavy-current discharge, heavier, and plumbous and sulfuric acid all contaminated environment.The mass ratio of lithium battery and volume ratio ability are all higher than lead-acid battery general about 40%; LiFePO4 general at present charges 1500 times, does not have memory effect, to charge after 1500 times about 85% storage capacity, and lead-acid battery is about 500 times, and memory effect is obvious; Lithium battery moon self discharge <3%, lead-acid battery 15 ~ 30%, difference is obvious; The battery of briefly same capacity, when heavy-current discharge, lithium battery releases the electricity of about 30% than lead-acid battery more.
Accompanying drawing illustrates:
Fig. 1 is the structured flowchart of existing transformer substation communication terminal ac power supply system;
Fig. 2 is structured flowchart of the present invention.
Embodiment:
Preferred forms of the present invention below in conjunction with accompanying drawing elaborates:
Embodiment: the uninterrupted supplied by AC/DC electricity system (see Fig. 2) of a kind of transformer substation communication terminal, it comprises rectification module 5, rectification module 5 connects scheduling IP phone 4, bidirectional power converter 6, inverter 9 respectively, bidirectional power converter 6 linkage function switch 7, functional switch 7 connects lithium battery group 8, inverter 9 link information terminal 2.
Alternating current 220V civil power is introduced by commercial power socket 1, direct current is converted to through rectification module 5, rectification module 5 exports and is divided into three tunnels, one tunnel is that DC load scheduling IP phone 4 is powered, one tunnel connects bidirectional power converter 6, when civil power is normal, controls to charge to lithium battery group 8 by functional switch 7, when the under-voltage operation of civil power or power-off time, lithium battery group 8 to be discharged by functional switch 7 with bidirectional power converter 6 for alternating current-direct current load provides electric energy; An other road connects inverter 9, for AC load information terminal 2 is powered.
Claims (1)
1. the uninterrupted supplied by AC/DC electricity system of transformer substation communication terminal, it is characterized in that it comprises commercial power socket (1), commercial power socket (1) connects rectification module (5), rectification module (5) connects scheduling IP phone (4), bidirectional power converter (6), inverter (9) respectively, bidirectional power converter (6) linkage function switch (7), functional switch (7) connects lithium battery group (8), inverter (9) link information terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354777.2A CN104901418A (en) | 2015-06-25 | 2015-06-25 | Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354777.2A CN104901418A (en) | 2015-06-25 | 2015-06-25 | Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104901418A true CN104901418A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510354777.2A Pending CN104901418A (en) | 2015-06-25 | 2015-06-25 | Transformer substation communication terminal uninterupted alternating current and direct current (AC/DC) power supply system |
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| CN (1) | CN104901418A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706256A2 (en) * | 1994-10-06 | 1996-04-10 | BOSCH TELECOM ÖFFENTLICHE VERMITTLUNGSTECHNIK GmbH | Circuit for a DC-DC converter |
| CN202424240U (en) * | 2012-01-04 | 2012-09-05 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
| CN104065154A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Frequency changer emergency power supply system |
| CN204992750U (en) * | 2015-06-25 | 2016-01-20 | 国网山东省电力公司烟台供电公司 | Incessant friendship direct current system of communication terminal of transformer substation |
-
2015
- 2015-06-25 CN CN201510354777.2A patent/CN104901418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706256A2 (en) * | 1994-10-06 | 1996-04-10 | BOSCH TELECOM ÖFFENTLICHE VERMITTLUNGSTECHNIK GmbH | Circuit for a DC-DC converter |
| CN202424240U (en) * | 2012-01-04 | 2012-09-05 | 广东易事特电源股份有限公司 | Multifunctional photovoltaic UPS (Uninterruptible Power Supply) system |
| CN104065154A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Frequency changer emergency power supply system |
| CN204992750U (en) * | 2015-06-25 | 2016-01-20 | 国网山东省电力公司烟台供电公司 | Incessant friendship direct current system of communication terminal of transformer substation |
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Application publication date: 20150909 |
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| WD01 | Invention patent application deemed withdrawn after publication |