CN217486229U - AC/DC self-adaptive operation box for transformer substation - Google Patents
AC/DC self-adaptive operation box for transformer substation Download PDFInfo
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- CN217486229U CN217486229U CN202221014452.1U CN202221014452U CN217486229U CN 217486229 U CN217486229 U CN 217486229U CN 202221014452 U CN202221014452 U CN 202221014452U CN 217486229 U CN217486229 U CN 217486229U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The utility model discloses an AC/DC self-adaptive operation box for a transformer substation, which comprises a manual closing loop, a re-acting closing loop, a manual tripping loop, a re-acting tripping loop, a closing loop and a tripping loop; the manual closing loop, the re-acting closing loop, the manual tripping loop and the re-acting tripping loop are respectively coupled with the secondary equipment; the input end of the switching-on loop is respectively connected with a manual switching-on loop and a re-operating switching-on loop; the input end of the tripping loop is respectively connected with the manual tripping loop and the re-tripping loop; the output ends of the closing loop and the tripping loop are both coupled with an operating mechanism of the primary equipment; each loop comprises a rectifier bridge, a filter capacitor and a voltage stabilizing diode; the filter capacitor and the voltage stabilizing diode are coupled in parallel and then coupled to a rectifier bridge, and the rectifier bridge is coupled to an operating power supply of the primary equipment. The utility model discloses not only can be adapted to DC power supply, can also be adapted to AC power supply.
Description
Technical Field
The utility model relates to an alternating current-direct current self-adaptation control box for transformer substation belongs to secondary equipment control box technical field.
Background
The operation box is used as an interface of primary equipment and secondary equipment, and needs to meet the requirements of the primary equipment and the secondary equipment in different environments. The power supply of the circuit breaker and the operation loop thereof is generally a direct current power supply, but in practical application, an alternating current circuit breaker is needed to save space and investment cost, and the direct current operation loop cannot be used at the moment.
Therefore, the utility model provides an alternating current-direct current self-adaptation control box for transformer substation to satisfy the on-the-spot demand.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, provide an alternating current-direct current self-adaptation control box for transformer substation, not only can be adapted to DC power supply, can also be adapted to AC power supply.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides an AC/DC self-adaptive operation box for a transformer substation, which comprises a manual closing loop, a re-acting closing loop, a manual tripping loop, a re-acting tripping loop, a closing loop and a tripping loop;
the manual closing loop, the re-acting closing loop, the manual tripping loop and the re-acting tripping loop are respectively coupled with the secondary equipment;
the input end of the switching-on loop is respectively connected with a manual switching-on loop and a re-operating switching-on loop;
the input end of the tripping circuit is respectively connected with the manual tripping circuit and the re-tripping circuit;
the output ends of the closing loop and the tripping loop are both coupled to an operating mechanism of primary equipment;
each loop comprises a rectifier bridge, a filter capacitor and a voltage stabilizing diode;
the filter capacitor and the voltage stabilizing diode are connected in parallel and then coupled to a rectifier bridge, and the rectifier bridge is coupled to an operating power supply of the primary equipment.
Further, the alternating current-direct current self-adaptive operation box for the transformer substation comprises two groups of voltage switching loops;
the input end of each group of voltage switching loop is connected with the bus voltage of one path of bus and the PT disconnecting link, and the output end of each voltage switching loop is coupled with the secondary equipment.
Further, the voltage switching circuit comprises a plurality of voltage switching relays connected in series;
and the contact of each voltage switching relay is connected with the secondary equipment.
Further, the alternating current-direct current adaptive operation box for the transformer substation comprises a power supply monitoring loop;
the power supply monitoring circuit comprises a normally open relay and a normally closed relay;
and the contact of the normally open relay and the contact of the normally closed relay are coupled to secondary equipment after being connected in series.
Furthermore, the alternating current and direct current self-adaptive operation box for the transformer substation comprises a post-closing position relay;
and one end of the closed position relay is coupled to the manual closing loop, and the other end of the closed position relay is coupled to the manual tripping loop.
Further, the alternating current-direct current adaptive operation box for the transformer substation comprises a jump position monitoring circuit and a closing position monitoring circuit;
the jumping position monitoring loop and the closing position monitoring loop are both coupled to an auxiliary contact of the primary equipment.
Further, the trip position monitoring circuit comprises at least one trip position relay;
the on-position monitoring loop comprises at least one on-position relay;
and the contact of the tripping position relay and the contact of the switching-on position relay are both connected with secondary equipment.
Furthermore, the manual closing circuit comprises a plurality of manual closing relays, contacts of the manual closing relays are connected in series and then coupled to a rectifier bridge of the manual closing circuit, one contact of one manual closing relay is connected with the closing circuit, and contacts of the other manual closing relays are coupled to the secondary equipment;
the switching-on circuit comprises a plurality of switching-on relays, contacts of the switching-on relays are connected in series and then coupled to a rectifier bridge of the switching-on circuit, one contact of each switching-on relay is connected with the switching-on circuit, and contacts of the other switching-on relays are coupled to secondary equipment;
the manual tripping circuit comprises a plurality of manual tripping relays, contacts of the manual tripping relays are connected in series and then coupled to a rectifier bridge of the manual tripping circuit, the contact of one manual tripping relay is connected with the tripping circuit, and the contacts of the other manual tripping relays are coupled to secondary equipment;
the rerun tripping circuit comprises a plurality of rerun tripping relays, contacts of the rerun tripping relays are connected in series and then coupled to a rectifier bridge of the rerun tripping circuit, one contact of each rerun tripping relay is connected with the tripping circuit, and contacts of the rest rerun tripping relays are coupled to secondary equipment.
The switching-on circuit comprises a switching-on holding relay, the switching-on holding relay is coupled to a rectifier bridge of the switching-on circuit, and a contact of the switching-on holding relay is connected with an operating mechanism of the primary equipment;
the trip circuit includes a trip hold relay coupled to a rectifier bridge of the trip circuit, contacts of the trip hold relay being connected to an operating mechanism of the primary appliance.
Further, the alternating current-direct current adaptive operation box for the transformer substation comprises 1-2 groups of chassis;
each loop is integrated in the case;
each group of chassis is 4U half-layer.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
the utility model can not only make the operation box realize AC/DC self-adaptation, but also ensure that other loops can still realize AC/DC self-adaptation when the rectifier bridge pipe in any loop is damaged by arranging the rectifier bridge in each loop; the utility model discloses a set up filter capacitor and zener diode in each return circuit, when can ensureing that alternating current instantaneous voltage is less than relay action voltage, the relay in each return circuit can normally work, improves the reliability of control box.
Drawings
Fig. 1 is a circuit diagram of an embodiment of an ac/dc adaptive operation box for a transformer substation according to the present invention;
in the figure: k11 is the switching on relay that resets, K12 is manual switching on relay, K13 is manual tripping relay, K14 is the switching on relay that resets, K2 is for closing back position relay, K31 is normally open relay, K32 is normally closed relay, K41 is closing on hold relay, K42 is tripping on hold relay, K51 is tripping position relay, K52 is switching on position relay, K6 is the voltage switching relay.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1
The embodiment provides an alternating current-direct current adaptive operation box for a transformer substation.
The alternating current-direct current adaptive operation box comprises a manual closing loop, a re-acting closing loop, a manual tripping loop, a re-acting tripping loop, a closing loop and a tripping loop.
Referring to fig. 1, each circuit includes a rectifier bridge, a filter capacitor, and a zener diode; the filter capacitor and the voltage stabilizing diode are coupled in parallel and then coupled to a rectifier bridge, and the rectifier bridge is coupled to an operation power supply of the primary equipment.
Based on the principle of forward conduction of a diode, when the operating power supply of primary equipment is a direct-current power supply, a rectifier bridge outputs the direct-current power supply; when the operating power supply of the primary equipment is alternating current, the rectifier bridge outputs a direct current power supply, and alternating current and direct current self-adaptation is realized.
In practical applications, each circuit includes a relay, and the relay is coupled to the rectifier bridge of the corresponding circuit.
Based on the energy storage function of the capacitor and the forward conduction principle of the diode, when the operating power supply of the primary equipment is alternating current, the rectifier bridge outputs direct current, and the direct current positively passes through the relay, the filter capacitor and the voltage stabilizing diode, so that the relay can normally work when the alternating current instantaneous voltage is lower than the action voltage of the relay.
Referring to fig. 1, the input end of the closing loop is respectively connected to the manual closing loop and the re-actuated closing loop; the input end of the tripping circuit is respectively connected with the manual tripping circuit and the re-tripping circuit; the output ends of the closing loop and the tripping loop are both coupled with an operating mechanism of the primary equipment. And after receiving the re-operating signals of the manual closing loop, the re-operating closing loop, the manual tripping loop and the re-operating tripping loop, the closing loop and the tripping loop output corresponding contact action signals, such as a tripping signal and a closing signal.
In application, the manual closing loop, the re-acting closing loop, the manual tripping loop and the re-acting tripping loop are respectively coupled to the secondary equipment so as to transmit the re-acting signal to the secondary equipment.
The utility model can not only make the operation box realize AC/DC self-adaptation, but also ensure that other loops can still realize AC/DC self-adaptation when the rectifier bridge pipe in any loop is damaged by arranging the rectifier bridge in each loop; the utility model discloses a set up filter capacitor and zener diode in each return circuit, when can ensureing that alternating current instantaneous voltage is less than relay action voltage, the relay in each return circuit can normally work, improves the reliability of control box.
Example 2
On the basis of embodiment 1, the ac/dc adaptive operation box of the substation of this embodiment further includes a voltage switching circuit, a power supply monitoring circuit, a post-closing position relay, a skip position monitoring circuit, a closing position monitoring circuit, and a chassis.
Referring to fig. 1, the ac/dc adaptive operation box of the substation of this embodiment includes two sets of voltage switching loops.
In application, the input end of each group of voltage switching loop is connected with the bus voltage of one bus and the PT disconnecting link. Namely, the bus voltage signals and PT disconnecting link position signals of two paths of buses can be received simultaneously. During practical application, each group of voltage switching loops obtains secondary side voltage of a bus through a bus PT mutual inductor of the primary equipment, and obtains a PT disconnecting link position signal through a PT disconnecting link auxiliary node of the primary equipment.
In application, each group of voltage switching loop comprises a plurality of voltage switching relays K6 connected in series; and the contact of each voltage switching relay is connected with the secondary side voltage of the bus. Namely, each group of voltage switching circuit switches and outputs corresponding secondary equipment voltage according to the secondary value of the bus voltage and the position signal of the PT disconnecting link.
Referring to fig. 1, the ac/dc adaptive operation box of the substation of the present embodiment includes a power supply monitoring circuit.
In application, the power supply monitoring circuit comprises a normally open relay K31 and a normally closed relay K32; and the contact of the normally open relay and the contact of the normally closed relay are coupled with the secondary equipment after being connected in series. That is, when the operation power of the primary appliance passes through the normally open relay K31 and the normally closed relay K32, the contact of the normally open relay is closed while the contact of the normally closed relay is opened, thereby monitoring the operation power of the primary appliance.
Referring to fig. 1, the ac/dc adaptive operation box of the substation of this embodiment includes a post-closing position relay K2, and in practical application, the post-closing position relay is a magnetically-held bistable relay.
In application, one end of the magnetic latching bistable relay is coupled with a manual closing loop, and the other end of the magnetic latching bistable relay is coupled with a manual tripping loop. In practical application, when a manual tripping signal of the secondary equipment is acquired, the corresponding closed position relay K2 is started; when a manual tripping signal of the secondary equipment is acquired, the corresponding closed position relay K2 is started.
Referring to fig. 1, the ac/dc adaptive operation box of the substation of the present embodiment includes a jump position monitoring circuit and a closing position monitoring circuit.
In application, the jumping position monitoring circuit and the closing position monitoring circuit are both coupled to an auxiliary contact of the primary equipment so as to obtain the on-off state of the switch of the primary equipment. The tripping monitoring circuit comprises at least one tripping position relay K51, when in actual application, contacts of a plurality of tripping position relays are connected in series and then coupled to a rectifier bridge of the tripping monitoring circuit, and the contact of each tripping position relay is coupled to secondary equipment; the on-position monitoring circuit comprises at least one on-position relay K52, during practical application, contacts of a plurality of gate position relays are connected in series and then coupled to a rectifier bridge of the on-position monitoring circuit, and the contact of each on-position relay is coupled to secondary equipment; to monitor the on/off state of the primary device switch.
The AC/DC adaptive operation box of the transformer substation comprises 1-2 groups of chassis.
In the application, each group of the chassis is 4U half-layer, so that one chassis can be independently installed in the screen cabinet or two chassis are spliced into 4U and installed in the screen cabinet in a whole layer. In practical application, each loop is integrated in the chassis.
Example 3
On the basis of embodiment 1 or 2, this embodiment describes in detail a manual closing circuit, a reclosing circuit, a manual tripping circuit, a reclosing tripping circuit, a closing circuit and a tripping circuit.
Referring to fig. 1, the manual closing circuit includes a plurality of manual closing relays K12, contacts of the plurality of manual closing relays are coupled to a rectifier bridge of the manual closing circuit after being connected in series, one contact of the manual closing relay is connected to the closing circuit, and contacts of the remaining manual closing relays are coupled to the secondary device to provide a signal contact for the secondary device.
Referring to fig. 1, the re-operating closing circuit includes a plurality of re-operating closing relays K11, contacts of the plurality of re-operating closing relays are coupled to a rectifier bridge of the re-operating closing circuit after being connected in series, one contact of one of the re-operating closing relays is connected to the closing circuit, and contacts of the remaining re-operating closing relays are coupled to the secondary device to provide signal contacts for the secondary device.
Referring to fig. 1, the manual trip circuit includes a plurality of manual trip relays K13, contacts of the manual trip relays are connected in series and then coupled to a rectifier bridge of the manual trip circuit, wherein the contact of one of the manual trip relays is connected to the trip circuit, and the contacts of the remaining manual trip relays are coupled to the secondary device to provide signal contacts for the secondary device.
Referring to fig. 1, the re-trip circuit includes a plurality of re-trip relays K14, contacts of the re-trip relays are coupled to a rectifier bridge of the re-trip circuit after being connected in series, wherein one contact of the re-trip relay is connected to the trip circuit, and contacts of the rest of the re-trip relays are coupled to the secondary device to provide signal contacts for the secondary device.
Referring to fig. 1, the closing circuit includes a closing holding relay K41, in application, the closing holding relay is a current type relay, the closing holding relay is coupled to a rectifier bridge of the closing circuit, and a contact of the closing holding relay is connected to an operating mechanism of the primary device.
Referring to fig. 1, the trip circuit includes a trip hold relay K42, which in use is a current mode relay coupled to a rectifier bridge of the trip circuit, the contacts of which are connected to the operating mechanism of the primary appliance.
In application, corresponding nodes of the secondary equipment are respectively connected with a manual closing loop, a re-acting closing loop, a manual tripping loop and a re-acting tripping loop in series, and in response to action signals of the nodes, corresponding actions are carried out on relay contacts of the corresponding loops, so that signal re-action is realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. An alternating current-direct current self-adaptive operation box for a transformer substation is characterized by comprising a manual closing loop, a re-acting closing loop, a manual tripping loop, a re-acting tripping loop, a closing loop and a tripping loop;
the manual closing loop, the re-acting closing loop, the manual tripping loop and the re-acting tripping loop are respectively coupled with the secondary equipment;
the input end of the switching-on loop is respectively connected with a manual switching-on loop and a re-operating switching-on loop;
the input end of the tripping loop is respectively connected with the manual tripping loop and the re-tripping loop;
the output ends of the closing loop and the tripping loop are both coupled with an operating mechanism of the primary equipment;
each loop comprises a rectifier bridge, a filter capacitor and a voltage stabilizing diode;
the filter capacitor and the voltage stabilizing diode are connected in parallel and then coupled to a rectifier bridge, and the rectifier bridge is coupled to an operating power supply of the primary equipment.
2. The ac-dc adaptive operation box for substations according to claim 1, characterized by comprising two sets of voltage switching loops;
the input end of each group of voltage switching loop is connected with the bus voltage of one bus and the PT disconnecting link, and the output end of each voltage switching loop is coupled with secondary equipment.
3. The ac-dc adaptive control box for substations according to claim 2, characterized in that the voltage switching loop comprises a plurality of voltage switching relays connected in series;
and the contact of each voltage switching relay is connected with the secondary equipment.
4. The ac-dc adaptive operation box for substations according to claim 1, characterized by comprising a power supply monitoring circuit;
the power supply monitoring circuit comprises a normally open relay and a normally closed relay;
and the contact of the normally open relay and the contact of the normally closed relay are coupled to secondary equipment after being connected in series.
5. The ac-dc adaptive operation box for substations according to claim 1, characterized by comprising a post-closing position relay;
and one end of the closed position relay is coupled to the manual closing loop, and the other end of the closed position relay is coupled to the manual tripping loop.
6. The AC-DC adaptive operation box for the transformer substation according to claim 1, characterized by comprising a jump position monitoring loop and a closing position monitoring loop;
the jump position monitoring circuit and the closed position monitoring circuit are both coupled to an auxiliary contact of the primary equipment.
7. The ac-dc adaptive operating box for substations according to claim 6, characterized in that the jump monitoring loop comprises at least one trip position relay;
the on-position monitoring loop comprises at least one on-position relay;
and the contact of the tripping position relay and the contact of the switching-on position relay are both connected with secondary equipment.
8. The AC-DC adaptive operation box for the transformer substation according to claim 1, wherein the manual closing circuit comprises a plurality of manual closing relays, contacts of the manual closing relays are connected in series and then are coupled to a rectifier bridge of the manual closing circuit, a contact of one manual closing relay is connected with the closing circuit, and contacts of the other manual closing relays are coupled to secondary equipment;
the switching-on circuit comprises a plurality of switching-on relays, contacts of the switching-on relays are connected in series and then coupled to a rectifier bridge of the switching-on circuit, one contact of each switching-on relay is connected with the switching-on circuit, and contacts of the other switching-on relays are coupled to secondary equipment;
the manual tripping circuit comprises a plurality of manual tripping relays, contacts of the manual tripping relays are connected in series and then coupled to a rectifier bridge of the manual tripping circuit, the contact of one manual tripping relay is connected with the tripping circuit, and the contacts of the other manual tripping relays are coupled to secondary equipment;
the rerun tripping circuit comprises a plurality of rerun tripping relays, contacts of the rerun tripping relays are connected in series and then coupled to a rectifier bridge of the rerun tripping circuit, one contact of each rerun tripping relay is connected with the tripping circuit, and contacts of the rest rerun tripping relays are coupled to secondary equipment.
9. The AC-DC adaptive control box for the transformer substation according to claim 1, wherein the closing loop comprises a closing holding relay, the closing holding relay is coupled to a rectifier bridge of the closing loop, and a contact of the closing holding relay is connected with an operating mechanism of a primary device;
the trip circuit includes a trip hold relay coupled to a rectifier bridge of the trip circuit, contacts of the trip hold relay being connected to an operating mechanism of the primary appliance.
10. The ac-dc adaptive control box for substations according to claim 1, comprising 1-2 sets of cabinets;
each loop is integrated in the case;
each group of chassis is 4U half-layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221014452.1U CN217486229U (en) | 2022-04-28 | 2022-04-28 | AC/DC self-adaptive operation box for transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221014452.1U CN217486229U (en) | 2022-04-28 | 2022-04-28 | AC/DC self-adaptive operation box for transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217486229U true CN217486229U (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221014452.1U Active CN217486229U (en) | 2022-04-28 | 2022-04-28 | AC/DC self-adaptive operation box for transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217486229U (en) |
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- 2022-04-28 CN CN202221014452.1U patent/CN217486229U/en active Active
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