CN2056292U - Dc power supply circuit arrangement for converting or distributing power station - Google Patents
Dc power supply circuit arrangement for converting or distributing power station Download PDFInfo
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- CN2056292U CN2056292U CN 89204058 CN89204058U CN2056292U CN 2056292 U CN2056292 U CN 2056292U CN 89204058 CN89204058 CN 89204058 CN 89204058 U CN89204058 U CN 89204058U CN 2056292 U CN2056292 U CN 2056292U
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- power
- silicon rectifier
- directly
- silicon
- power supply
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Abstract
The utility model relates to a silicon rectifying D.C. Power source device which is used in the converting or distributing power station below 110 kv. Two AC power sources respectively supply power to a silicon rectifier device at the same time, and the output terminals of the two silicon rectifying devices are connected in parallel with each other and then supply power to load. Namely, the two AC power sources and the two silicon rectifying devices can operate independently and simultaneously, and no mutually cast electric appliance is arranged from the inlet wire of the AC power sources until DC output terminal. Therefore, even one AC power source or one silicon rectifier device is failure in operational process, the silicon rectifying D.C. Power source device can supply direct current continuously without human intervention. The reliability for supplying power is raised.
Description
The utility model belongs to the silicon rectifier continuous-current plant that is specially adapted to transformer and distribution power station below 110 kilovolts.
The operational reliability of transformer and distribution power station DC power supply device below 110 kilovolts is very important to the safe operation and the normal breaking-closing operating of high-voltage switch gear of transformer and distribution power station, and power supply is unreliable or unstable all may to be caused the distribution equipment damage even cause the transmission and distribution network collapse.Existing as shown in Figure 1 by the two-way AC power throw power supply mutually, have two the cover silicon rectifier devices continuous-current plant, compare with the continuous-current plant of single channel ac power supply, reliability has had large increase.Yet, because during actual motion, still have only one tunnel AC power and a cover silicon rectifier device in running order, another road AC power and another set of silicon rectifier device only are in stand-by state and do not add operation, to realize switching by throwing electrical equipment mutually, thereby aspect reliability, still have deficiency.For example, because of having several automatic and manual mutual throwing electrical equipment, when breaking down, committing suicide by hanging mutually automatically the joint action, the manually mutual electrical equipment of throwing of necessary manual operation correspondence, this monitors operation conditions constantly with regard to the personnel of required value class, and not only labour intensity is big, and power supply reliability is also poor; Make to throw mutually electrical equipment with contactor, machinery and electric fault not only take place easily, and when one tunnel AC power of power supply took place such as single-phase earthing, fault such as single-phase or three-phase is under-voltage, the reliability of throwing action mutually was difficult to assurance; During normal operation, if throw the electrical equipment action mutually, will cause the dc bus instant cut-off, the reliability of influence control and protection system is particularly thrown the electrical equipment action mutually when the moment that high-voltage switch gear closes a floodgate, and will cause the high-voltage switch gear arcing, even explode.
The purpose of this utility model provides the high silicon rectifier continuous-current plant of a kind of power supply reliability.
The purpose of this utility model realizes with following proposal: the two-way AC power is connected with a cover silicon rectifier device simultaneously separately, can power to the load simultaneously after the output of two cover silicon rectifier devices is connected in parallel, promptly two-way AC power and two cover silicon rectifier devices all can be individually or simultaneously to the next stage electric; And exchange electric power incoming line certainly and mutual throwing device all is not set until dc output end.Thereby, even in the running one tunnel AC power or one the cover silicon rectifier device break down, still can provide direct current incessantly, and need not carry out manual intervention, improved power supply reliability greatly.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the electrical principle schematic diagram that existing two-way AC power is thrown formula silicon rectifier continuous-current plant mutually.
Fig. 2 is the electrical principle schematic diagram of an embodiment of the utility model.
With reference to Fig. 2.Two-way AC power inlet wire of the present utility model (1) directly is connected with (4) with silicon rectifier device (3) respectively without coming into operation electrical equipment mutually with (2); for the ease of carrying out regular maintenance and protection automatically, it all can be through being connected of realizing such as protection electrical appliances such as automatic switch, fuses that said " directly " connection was connected in parallel with " directly " that below will narrate.The commutating circuit (5) of silicon rectifier device (3) and (4) and the positive and negative electrode output of (6) directly are connected in parallel the back respectively equally to DC bus powered without coming into operation electrical equipment mutually.Said commutating circuit (5) and (6) can have two commutating circuits respectively; for example; consider that high-voltage switch gear combined floodgate transient current is very big; in order not influence the reliability and stability with control and protection system power supply to the station; among the embodiment of the present utility model, commutating circuit (5) and (6) respectively comprise two commutating circuits (5 '), (5 ") and (6 '), (6 ").The positive and negative electrode output of commutating circuit wherein (5 ') and (6 ') directly is connected in parallel respectively equally, is connected to closing bus bar (7) then; The positive and negative electrode output of commutating circuit (5 ") and (6 ") directly is connected in parallel respectively too, is connected to control bus (8) then.Commutating circuit (5 ') and (6 ') to closing bus bar (7) power supply of this embodiment are to provide alternating current respectively by one group of secondary winding in the rectifier transformer with two groups of secondary windings (9) and (10), but also can utilize silicon rectifier cell directly will power to closing bus bar (7) after the AC rectification from interchange electric power incoming line (1) and (2) without rectifier transformer.The power supply of being made up of column sealed type ickel-cadmium cell group that the utility model can also comprise that existing people adopts is made back-up source (11), this back-up source (11) with control bus (8) and be connected.Like this, even two-way AC power or two cover silicon rectifier devices all break down, still can guarantee to station inner control and protection system power supply.
Claims (4)
1, a kind of transformer and distribution power station continuous-current plant, comprise two-way AC power inlet wire (1) and (2), and two the cover silicon rectifier device (3) and (4), it is characterized in that: two-way AC power inlet wire (1) directly is connected with (4) with silicon rectifier device (3) respectively with (2), and the commutating circuit (5) of silicon rectifier device (3) and (4) and the positive and negative electrode output of (6) directly are connected in parallel respectively.
2, as the said continuous-current plant of claim 1, it is characterized in that said commutating circuit (5) and (6) respectively comprise two commutating circuits (5 '), (5 ") and (6 '), (6 "), be connected to closing bus bar (7) after the positive and negative electrode output of commutating circuit (5 ') and (6 ') directly is connected in parallel respectively, be connected to control bus (8) after the positive and negative electrode output of commutating circuit (5 ") and (6 ") directly is connected in parallel respectively.
3,, it is characterized in that said commutating circuit (5 ') and (6 ') are that one group of secondary winding by rectifier transformer (9) and (10) provides alternating current respectively as the said continuous-current plant of claim 2.
4,, it is characterized in that also being connected on the said control bus (8) back-up source of forming by column sealed type ickel-cadmium cell group (11) as the said continuous-current plant of claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204058 CN2056292U (en) | 1989-04-10 | 1989-04-10 | Dc power supply circuit arrangement for converting or distributing power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204058 CN2056292U (en) | 1989-04-10 | 1989-04-10 | Dc power supply circuit arrangement for converting or distributing power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056292U true CN2056292U (en) | 1990-04-18 |
Family
ID=4861500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89204058 Withdrawn CN2056292U (en) | 1989-04-10 | 1989-04-10 | Dc power supply circuit arrangement for converting or distributing power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912109A (en) * | 2018-09-14 | 2020-03-24 | 江苏德力化纤有限公司 | Low-voltage direct-current power supply and distribution equipment and method |
-
1989
- 1989-04-10 CN CN 89204058 patent/CN2056292U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912109A (en) * | 2018-09-14 | 2020-03-24 | 江苏德力化纤有限公司 | Low-voltage direct-current power supply and distribution equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |