CN203071637U - DC power supply connection control apparatus - Google Patents

DC power supply connection control apparatus Download PDF

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Publication number
CN203071637U
CN203071637U CN 201320009763 CN201320009763U CN203071637U CN 203071637 U CN203071637 U CN 203071637U CN 201320009763 CN201320009763 CN 201320009763 CN 201320009763 U CN201320009763 U CN 201320009763U CN 203071637 U CN203071637 U CN 203071637U
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China
Prior art keywords
continuous
power supply
direct current
connection switch
bus connection
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CN 201320009763
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Chinese (zh)
Inventor
陈小风
范耀德
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CN 201320009763 priority Critical patent/CN203071637U/en
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Abstract

The utility model discloses a DC power supply connection control apparatus connected between two DC power supply apparatuses. The connection control apparatus comprises a DC bus connection switch, an isolation reverse-direction parallel connection diode set and a parallel-operation signal indication lamp, wherein the DC bus connection switch is connected between DC buses of a first DC power supply apparatus and a second DC power supply apparatus, the isolation reverse-direction parallel connection diode set is connected between the DC bus connection switch and the second DC power supply apparatus, the second DC power supply apparatus is provided with an auxiliary normal-open contact, and the auxiliary normal-open contact and the parallel-operation signal indication lamp are connected between the DC bus connection switch and the isolation reverse-direction parallel connection diode set in series. Through an external connection manner, UPS to a load is ensured; fault splitting processing, regular overhauling, function test or storage battery activation test of any DC power supply apparatuses are realized; and the UPS of the DC power supply apparatus to the load cannot be affected.

Description

A kind of DC power supply connects control device
Technical field
The utility model relates to the support equipment of DC power supply, more particularly, relates to a kind of DC power supply and connects control device.
Background technology
The main application of continuous-current plant is exactly to supply with operating power or the control power supply of primary cut-out, relaying protection, automation control system; the quality of its performance and quality will be directly connected to the safe operation of the stable and equipment of electrical network; adopting the load of DC power supply generally all is important load; neither allow to have a power failure, there is higher requirement at the dawn to the quality of power supply again.
Existing continuous-current plant, when grid disconnection or alternating current input power supplying generation dead electricity, or when battery charger failure output is interrupted, powered to the load incessantly by batteries, but batteries is impossible to discharge for a long time, in case the electric energy of batteries drains, will influence the load power supply.
Therefore; the defective of such device is to realize that the breakdown repair of continuous-current plant, periodic inspection, function test or storage battery need activate the requirement of test; when in case unusual or fault take place in continuous-current plant; having only has a power failure handles, and can not satisfy the requirement of the uninterrupted electricity consumption of responsible consumer.
The utility model content
At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of DC power supply and connects control device, can guarantee the uninterrupted power supply of continuous-current plant, has promoted the equipment operation maintenance level.
For achieving the above object, the utility model adopts following technical scheme:
This DC power supply connects control device, be connected between two continuous-current plants, comprise the direct current bus connection switch, isolate with reverse parallel connection diode group, the parallel running signal lamp, the direct current bus connection switch is connected between the dc bus of first continuous-current plant and second continuous-current plant, isolate and be connected between direct current bus connection switch and second continuous-current plant with reverse parallel connection diode group, the direct current bus connection switch also carries an auxiliary normally opened contact, and auxiliary normally opened contact and parallel running signal lamp are connected on the direct current bus connection switch and isolate with between the reverse parallel connection diode group.
First fixed contact of described direct current bus connection switch is connected to the dc bus output head anode of first continuous-current plant by cable, first moving contact of direct current bus connection switch is connected to the input of reverse parallel connection diode group by cable, and the output of reverse parallel connection diode group is connected to the dc bus output head anode of second continuous-current plant by cable; The dc bus negative pole of output end of second continuous-current plant is connected to second moving contact of direct current bus connection switch by cable, and second fixed contact of direct current bus connection switch is connected to the dc bus negative pole of output end of first continuous-current plant by cable.
The moving contact of described auxiliary normally opened contact is wired to first moving contact of direct current bus connection switch, the fixed contact of auxiliary normally opened contact is wired to the positive pole of parallel running signal lamp, and the negative pole of parallel running signal lamp is wired to second moving contact of direct current bus connection switch.
Described reverse parallel connection diode group is made of the pair of diodes reverse parallel connection.
In technique scheme, DC power supply of the present utility model connects control device and is connected between two continuous-current plants, comprise the direct current bus connection switch, isolate with reverse parallel connection diode group, the parallel running signal lamp, the direct current bus connection switch is connected between the dc bus of first continuous-current plant and second continuous-current plant, isolate and be connected between direct current bus connection switch and second continuous-current plant with reverse parallel connection diode group, the direct current bus connection switch also carries an auxiliary normally opened contact, and auxiliary normally opened contact and parallel running signal lamp are connected on the direct current bus connection switch and isolate with between the reverse parallel connection diode group.Owing to adopt outside ways of connecting, guaranteed to the load uninterrupted power supply, thereby realized the activation test of the processing of fault off-the-line, periodic inspection, function test or the storage battery of any continuous-current plant, and do not influenced this continuous-current plant to the load uninterrupted power supply.
Description of drawings
Fig. 1 is the circuit diagram that DC power supply of the present utility model connects control device.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also shown in Figure 1, DC power supply of the present utility model connects control device, be connected between two continuous-current plants, mainly comprise direct current bus connection switch QF5, isolate with reverse parallel connection diode group D1, D2, parallel running signal lamp HD, wherein, direct current bus connection switch QF5 is connected between the dc bus of first continuous-current plant and second continuous-current plant, isolate with reverse parallel connection diode group D1, D2 is connected between direct current bus connection switch QF5 and second continuous-current plant, direct current bus connection switch QF5 also carries an auxiliary normally opened contact, and auxiliary normally opened contact and parallel running signal lamp HD are connected on direct current bus connection switch QF5 and isolate with reverse parallel connection diode group D1, between the D2.
Its particular circuit configurations is as follows: first fixed contact 1 of described direct current bus connection switch QF5 is connected to the dc bus output head anode P of first continuous-current plant by cable, first moving contact 2 of direct current bus connection switch QF5 is connected to the input A of reverse parallel connection diode group D1, D2 by cable, and the output of reverse parallel connection diode group HD is connected to the dc bus output head anode P of second continuous-current plant by cable; The dc bus negative pole of output end N of second continuous-current plant is connected to second moving contact 4 of direct current bus connection switch QF5 by cable, and second fixed contact 3 of direct current bus connection switch QF5 is connected to the dc bus negative pole of output end N of first continuous-current plant by cable.The moving contact 1.2 of described auxiliary normally opened contact QF5.1 is wired to first moving contact 2 of direct current bus connection switch QF5, the fixed contact 1.1 of auxiliary normally opened contact QF5.1 is wired to the positive pole of parallel running signal lamp HD, and the negative pole of parallel running signal lamp HD is wired to second moving contact 4 of direct current bus connection switch QF5.And described reverse parallel connection diode group D1, D2 are made of the pair of diodes reverse parallel connection.
This working operating mode that connects control device is as follows:
1. normal operating mode one
Charger input switch QF1 on first continuous-current plant and second continuous-current plant, charger output switch QF2, batteries switch QF3 and load switch QF4 place closing position, and direct current bus connection switch QF5 places the separating brake position, overlaps continuous-current plant independent operating separately this moment two.
2. normal operating mode two
Charger input switch QF1 on first continuous-current plant and second continuous-current plant, charger output switch QF2, batteries switch QF3 and load switch QF4 place closing position, and direct current bus connection switch QF5 also places closing position, overlaps the bus paired running of continuous-current plants this moment two.Namely be communicated with by direct current bus connection switch QF5 and reverse parallel connection diode group D1, D2, this moment, two chargers were in the paired running state, and parallel running signal lamp HD lights.
3. misoperation mode one
When need carrying out troubleshooting, periodic inspection, function test or storage battery, the first continuous-current plant charger need activate when test: 1) with the first continuous-current plant charger input switch QF1 separating brake; 2) with first continuous-current plant charger output switch QF2 separating brake; 3) bus connection switch QF5 is closed a floodgate, parallel running signal lamp HD lights; 4) with the batteries switch QF3 separating brake of first continuous-current plant, this moment, first continuous-current plant was in isolation, can carry out troubleshooting, periodic inspection, function test or storage battery to it and need activate when test, and do not influence first continuous-current plant and second continuous-current plant with the load uninterrupted power supply.
Its second continuous-current plant is to the first continuous-current plant load uninterrupted power supply loop:
The dc bus negative pole of output end N of the dc bus negative pole of output end N of dc bus output head anode P → first continuous-current plant of the dc bus output head anode P of second continuous-current plant → reverse parallel connection diode group D2 conducting → direct current bus connection switch QF5 upper contact 1,2 closures → first continuous-current plant → direct current bus connection switch QF5 lower contact 3,4 closures → second continuous-current plant, namely second continuous-current plant is to the first continuous-current plant load uninterrupted power supply.
The reverse parallel connection diode group D2 conducting → contact 1.1 of auxiliary normally opened contact QF5.1, the dc bus negative pole of output end N of 1.2 closures → parallel running signal lamp HD positive pole → parallel running signal lamp HD negative pole → second continuous-current plant, namely parallel running signal lamp HD lights.
4. misoperation mode two
When need carrying out troubleshooting, periodic inspection, function test or storage battery, the second continuous-current plant charger need activate when test: 1) with the second continuous-current plant charger input switch QF1 separating brake; 2) with second continuous-current plant charger output switch QF2 separating brake; 3) bus connection switch QF5 is closed a floodgate, parallel running signal lamp HD lights; 4) with 2# batteries switch QF3 separating brake, this moment, second continuous-current plant was in isolation, can carry out troubleshooting, periodic inspection, function test or storage battery to it and need activate when test, and do not influence second continuous-current plant and first continuous-current plant with the load uninterrupted power supply.
Its first continuous-current plant is to the second continuous-current plant load uninterrupted power supply loop:
The dc bus negative pole of output end N of the dc bus negative pole of output end N of dc bus output head anode P → second continuous-current plant of the dc bus output head anode P of first continuous-current plant → direct current bus connection switch QF5 contact 1,2 closures → reverse parallel connection diode group D1 conducting → second continuous-current plant → direct current bus connection switch QF5 contact 3,4 closures → first continuous-current plant, namely first continuous-current plant is to the second continuous-current plant load uninterrupted power supply.
Direct current bus connection switch QF5 contact 1,2 closures → direct current bus connection switch carry contact 1.1,1.2 closures → parallel running signal lamp HD positive pole → parallel running signal lamp HD negative pole → direct current bus connection switch QF5 contact 3,4 closures of normally opened contact QF5.1, and namely parallel running signal lamp HD lights.
In sum, DC power supply of the present utility model connects control device, adopt outside ways of connecting, namely be not arranged on the continuous-current plant body, but utilize the outside of two platform independent continuous-current plants to connect, guarantee to the load uninterrupted power supply, can realize wherein any continuous-current plant when the processing of fault off-the-line, periodic inspection, function test or storage battery need activate test, and not influence this continuous-current plant to the load uninterrupted power supply.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (4)

1. a DC power supply connects control device, is connected between two continuous-current plants, it is characterized in that:
Comprise the direct current bus connection switch, isolate with reverse parallel connection diode group, parallel running signal lamp, the direct current bus connection switch is connected between the dc bus of first continuous-current plant and second continuous-current plant, isolate and be connected between direct current bus connection switch and second continuous-current plant with reverse parallel connection diode group, the direct current bus connection switch also carries an auxiliary normally opened contact, and auxiliary normally opened contact and parallel running signal lamp are connected on the direct current bus connection switch and isolate with between the reverse parallel connection diode group.
2. DC power supply as claimed in claim 1 connects control device, it is characterized in that:
First fixed contact of described direct current bus connection switch is connected to the dc bus output head anode of first continuous-current plant by cable, first moving contact of direct current bus connection switch is connected to the input of reverse parallel connection diode group by cable, and the output of reverse parallel connection diode group is connected to the dc bus output head anode of second continuous-current plant by cable; The dc bus negative pole of output end of second continuous-current plant is connected to second moving contact of direct current bus connection switch by cable, and second fixed contact of direct current bus connection switch is connected to the dc bus negative pole of output end of first continuous-current plant by cable.
3. DC power supply as claimed in claim 1 connects control device, it is characterized in that:
The moving contact of described auxiliary normally opened contact is wired to first moving contact of direct current bus connection switch, the fixed contact of auxiliary normally opened contact is wired to the positive pole of parallel running signal lamp, and the negative pole of parallel running signal lamp is wired to second moving contact of direct current bus connection switch.
4. DC power supply as claimed in claim 1 connects control device, it is characterized in that:
Described reverse parallel connection diode group is made of the pair of diodes reverse parallel connection.
CN 201320009763 2013-01-08 2013-01-08 DC power supply connection control apparatus Active CN203071637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320009763 CN203071637U (en) 2013-01-08 2013-01-08 DC power supply connection control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320009763 CN203071637U (en) 2013-01-08 2013-01-08 DC power supply connection control apparatus

Publications (1)

Publication Number Publication Date
CN203071637U true CN203071637U (en) 2013-07-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104362734A (en) * 2014-11-19 2015-02-18 国家电网公司 Power system switching device and method
CN108736477A (en) * 2018-07-16 2018-11-02 张哲� With power utilization network topology
CN110098606A (en) * 2019-05-27 2019-08-06 国家能源投资集团有限责任公司 Power supply reverse graft circuit and reverse graft method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104362734A (en) * 2014-11-19 2015-02-18 国家电网公司 Power system switching device and method
CN108736477A (en) * 2018-07-16 2018-11-02 张哲� With power utilization network topology
CN110098606A (en) * 2019-05-27 2019-08-06 国家能源投资集团有限责任公司 Power supply reverse graft circuit and reverse graft method

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