CN212726460U - Relay protection self-contained power supply - Google Patents
Relay protection self-contained power supply Download PDFInfo
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- CN212726460U CN212726460U CN202021190244.8U CN202021190244U CN212726460U CN 212726460 U CN212726460 U CN 212726460U CN 202021190244 U CN202021190244 U CN 202021190244U CN 212726460 U CN212726460 U CN 212726460U
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Abstract
The utility model relates to a relay protection is from having power. The device comprises diodes D1, D0, D2, a first signal lamp XD1, a second signal lamp XD1, a current-limiting and voltage-limiting charging module M1, a battery overvoltage protection module M2, a battery capacity detection module M3, a DC/DC boosting module M4 and an anti-interference module M5; the anode of the diode D1 is connected with the anode of the diode D0, the cathode of the diode D1 is connected with the first end of the first signal lamp XD1 and the first end of the current-limiting and voltage-limiting charging module M1, the third end of the current-limiting and voltage-limiting charging module M1 is connected with the battery overvoltage protection module M2, the battery capacity detection module M3 and the DC/DC boost module M4, the DC/DC boost module M4 is further connected with the anti-interference module M5, and the two ends of the anti-interference module M5 are connected with the second signal lamp XD1 in parallel. The relay protection self-contained power supply is a short-time self-contained power supply of a protection device, and the safety of the protection device can be improved.
Description
Technical Field
The utility model belongs to the technical field of circuit protection device technique and specifically relates to a protection device's short-time self-contained power supply is related to.
Background
In a modern power system, a 110kV line protection power supply of a 220kV transformer substation is configured independently, and an important 110kV line protection low-voltage direct-current power supply of the 110kV transformer substation is also configured singly. If the power system fails, the charging device trips, and when the capacity of the storage battery is greatly reduced or is opened, and a reliable low-voltage direct-current power supply cannot be provided for a protection and trip loop, a line switch can refuse to remove the fault in a grade-by-grade manner, so that large-area power failure is caused, and great difficulty is brought to enterprise safety production, people's lives and properties and life safety guarantee.
Disclosure of Invention
In view of the above, the present invention is directed to solving the above-described problems. An object of the utility model is to provide a relay protection self-contained power supply who solves above problem. Specifically, the utility model provides a can improve the short-time self-contained power of protection device security.
The utility model adopts the technical scheme that: a relay protection self-contained power supply comprises diodes D1, D0, D2, a first signal lamp XD1, a second signal lamp XD1, a current-limiting and voltage-limiting charging module M1, a battery overvoltage protection module M2, a battery capacity detection module M3, a DC/DC boosting module M4 and an anti-interference module M5; the anode of the diode D1 is respectively connected with the anode of D0 and 220V +, the cathode of D1 is respectively connected with the first end of a first signal lamp XD1 and the first end of a current-limiting and voltage-limiting charging module M1, the second end of the first signal lamp XD1 and the second end of the current-limiting and voltage-limiting charging module M1 are respectively connected with 220V-, the third end of the current-limiting and voltage-limiting charging module M1 is respectively connected with a battery overvoltage protection module M2, a battery capacity detection module M3 and a DC/DC boost module M4, the battery overvoltage protection module M2 and the battery capacity detection module M3 are respectively arranged at the two ends of the storage battery, the DC/DC boost module M4 is further connected with an anti-interference module M5, the two ends of the anti-interference module M5 are connected with the second signal lamp XD1 in parallel, the anti-interference module M5 is further connected with the anode of the diode D2, the cathode of D2 is respectively connected with the cathode of D0, and the cathode of D2 and the cathode of the D0, a first end of the second signal lamp XD1 is connected to an anode of the diode D2, and a second end of the second signal lamp XD1 and a second end of the first signal lamp XD1 are used as a second output end of the relay protection self-contained power supply.
Further, the wire connecting terminal comprises wire connecting terminals J1, J2, J3 and J4; the wiring terminal J1 is connected with 220V +, the wiring terminals J2 and J3 are connected with 220V-, and the wiring terminal J3 is used as the second output end of the relay protection self-contained power supply, and the wiring terminal J4 is respectively connected with the cathode of D2 and the cathode of D0 and is used as the first output end of the relay protection self-contained power supply.
The utility model has the advantages that: the utility model relates to a can improve the short-time self-contained power supply of protection device security can provide 100W's stand-by power, and operating time can reach more than 20 min.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. To those skilled in the art, other figures may be derived from these figures without inventive effort.
Fig. 1 exemplarily shows a schematic structural diagram of a relay protection self-contained power supply of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following describes in detail the relay protection self-contained power supply according to the present invention with reference to the accompanying drawings.
Example 1: as shown in fig. 1, a relay protection self-contained power supply includes diodes D1, D0, D2, a first signal lamp XD1, a second signal lamp XD1, a current-limiting and voltage-limiting charging module M1, a battery overvoltage protection module M2, a battery capacity detection module M3, a DC/DC boost module M4, and an anti-interference module M5; the anode of the diode D1 is respectively connected with the anode of D0 and 220V +, the cathode of D1 is respectively connected with the first end of a first signal lamp XD1 and the first end of a current-limiting and voltage-limiting charging module M1, the second end of the first signal lamp XD1 and the second end of the current-limiting and voltage-limiting charging module M1 are respectively connected with 220V-, the third end of the current-limiting and voltage-limiting charging module M1 is respectively connected with a battery overvoltage protection module M2, a battery capacity detection module M3 and a DC/DC boost module M4, the battery overvoltage protection module M2 and the battery capacity detection module M3 are respectively arranged at the two ends of the storage battery, the DC/DC boost module M4 is further connected with an anti-interference module M5, the two ends of the anti-interference module M5 are connected with the second signal lamp XD1 in parallel, the anti-interference module M5 is further connected with the anode of the diode D2, the cathode of D2 is respectively connected with the cathode of D0, and the cathode of D2 and the cathode of the D0, a first end of the second signal lamp XD1 is connected to an anode of the diode D2, and a second end of the second signal lamp XD1 and a second end of the first signal lamp XD1 are used as a second output end of the relay protection self-contained power supply.
Further, the wire connecting terminal comprises wire connecting terminals J1, J2, J3 and J4; the wiring terminal J1 is connected with 220V +, the wiring terminals J2 and J3 are connected with 220V-, and the wiring terminal J3 is used as the second output end of the relay protection self-contained power supply, and the wiring terminal J4 is respectively connected with the cathode of D2 and the cathode of D0 and is used as the first output end of the relay protection self-contained power supply.
The utility model discloses a theory of operation is:
the utility model discloses input 220V alternating current power supply is by J1, J2 binding post input.
Under normal conditions, the current flow direction is as follows in sequence: 220V positive supply → J1 terminal → D0 diode → J4 → protection device → J3 → J2 goes back to 220V negative supply.
When the input power supply is normal, the input 220V positive power supply → the diode D1 → the first signal lamp XD1, and the input of the 220V direct current power supply is normal. Meanwhile, a 220V positive power supply passing through the diode D1 is loaded on the current-limiting and voltage-limiting charging module M1, and four rechargeable lithium batteries connected in series are charged. The battery overvoltage protection module M2 is a protection circuit of the lithium battery to prevent the lithium battery from being damaged due to overcharge. The battery capacity detection module M3 is a device for detecting the capacity of the capacitor of each lithium battery when the voltage of the lithium battery is boosted for the protection device.
In fig. 1, the first signal lamp XD1 on the left-hand side is turned on when the input power is supplied, i.e., the first signal lamp XD1 is turned on green, and is turned on when the output power is supplied, i.e., the second signal lamp XD1 is turned on red.
The DC/DC boost module M4 boosts the voltage of 16V to 208V, and after the voltage is subjected to anti-interference filtering by the anti-interference module M5 (an anti-interference filter can be adopted), the positive voltage 208V is supplied to a protection device through → a diode D2 → J4. The anti-interference module M5 can eliminate the influence of high-frequency components contained after the direct current boost on the normal operation of the protection device.
The 220V is also connected with other high-level direct current loads, the D0 diode has the effect that under the normal condition, the protection device is powered by a working power supply, the direct current voltage output by the DC/DC boosting module M4 is only 208V, and the negative pole end of the D0 diode has about 235V direct current voltage under the normal condition, so that the D2 diode is in an automatic blocking state. When the upper-stage input power supply disappears, the voltage of the D2 negative power supply is higher than that of the D0 negative power supply, the D0 diode is blocked reversely, the voltage output by the DC/DC boost module M4 can only be supplied to a protection device carried by the DC/DC boost module M4, the power cannot be supplied to the upper-stage power supply, the problem that the battery power is quickly exhausted by the upper-stage power supply can be overcome, and the device is prevented from being damaged due to larger load. The utility model discloses can provide 100W's stand-by power, operating time can reach more than 20 min.
The above-described embodiments can be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the term "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely for illustrating the technical solutions of the present invention and are not to be construed as limiting, and the present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all the modifications and equivalents should be covered by the scope of the claims of the present invention.
Claims (2)
1. A relay protection self-contained power supply is characterized in that: the device comprises diodes D1, D0, D2, a first signal lamp XD1, a second signal lamp XD1, a current-limiting and voltage-limiting charging module M1, a battery overvoltage protection module M2, a battery capacity detection module M3, a DC/DC boosting module M4 and an anti-interference module M5; the anode of the diode D1 is respectively connected with the anode of D0 and 220V +, the cathode of D1 is respectively connected with the first end of a first signal lamp XD1 and the first end of a current-limiting and voltage-limiting charging module M1, the second end of the first signal lamp XD1 and the second end of the current-limiting and voltage-limiting charging module M1 are respectively connected with 220V-, the third end of the current-limiting and voltage-limiting charging module M1 is respectively connected with a battery overvoltage protection module M2, a battery capacity detection module M3 and a DC/DC boost module M4, the battery overvoltage protection module M2 and the battery capacity detection module M3 are respectively arranged at the two ends of the storage battery, the DC/DC boost module M4 is further connected with an anti-interference module M5, the two ends of the anti-interference module M5 are connected with the second signal lamp XD1 in parallel, the anti-interference module M5 is further connected with the anode of the diode D2, the cathode of D2 is respectively connected with the cathode of D0, and the cathode of D2 and the cathode of the D0, a first end of the second signal lamp XD1 is connected to an anode of the diode D2, and a second end of the second signal lamp XD1 and a second end of the first signal lamp XD1 are used as a second output end of the relay protection self-contained power supply.
2. The relay protection self-contained power supply according to claim 1, wherein: the wire connecting terminal also comprises wire connecting terminals J1, J2, J3 and J4; the wiring terminal J1 is connected with 220V +, the wiring terminals J2 and J3 are connected with 220V-, and the wiring terminal J3 is used as the second output end of the relay protection self-contained power supply, and the wiring terminal J4 is respectively connected with the cathode of D2 and the cathode of D0 and is used as the first output end of the relay protection self-contained power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021190244.8U CN212726460U (en) | 2020-06-23 | 2020-06-23 | Relay protection self-contained power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021190244.8U CN212726460U (en) | 2020-06-23 | 2020-06-23 | Relay protection self-contained power supply |
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| Publication Number | Publication Date |
|---|---|
| CN212726460U true CN212726460U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021190244.8U Active CN212726460U (en) | 2020-06-23 | 2020-06-23 | Relay protection self-contained power supply |
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|---|---|
| CN (1) | CN212726460U (en) |
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- 2020-06-23 CN CN202021190244.8U patent/CN212726460U/en active Active
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