CN213521269U

CN213521269U - Wisdom box-type substation

Info

Publication number: CN213521269U
Application number: CN202022792682.8U
Authority: CN
Inventors: 宋小春; 王凌
Original assignee: Chengdu Guodian Switch Complete Equipment Co ltd
Current assignee: Chengdu Guodian Switch Complete Equipment Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-22
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a smart box-type substation, which comprises a substation body, wherein the substation body comprises a power supply device and electronic electric equipment, the power supply device supplies power for the electronic electric equipment, the output end of the power supply device is provided with a protection circuit, the protection circuit comprises a high-voltage measuring element resistor and a protection element, and the high-voltage measuring element is connected with the output end of the power supply device and is used for consuming the excessive high voltage in the protection circuit; the protection element is connected with the high voltage measurement element, and when the voltage on the high voltage measurement element is overlarge, the protection element can be disconnected so as to disconnect the whole protection circuit, so that the electric equipment is prevented from being damaged by the high voltage. The utility model discloses be equipped with protection circuit on box-type substation's inside power supply device, can avoid appearing thunder and lightning weather and make box-type substation's inside electronic equipment overvoltage appear easily for each electronic equipment suffers the harm, can't use, and leads to the condition that its power supply received the influence thereupon, has improved the stability of whole box-type substation work.

Description

Wisdom box-type substation

Technical Field

The utility model relates to a box-type substation field especially relates to a wisdom box-type substation.

Background

The box-type substation is also called a pre-installed substation or a pre-installed substation. The transformer is a high-voltage switch device, a distribution transformer and a low-voltage distribution device, and is factory prefabricated indoor and outdoor compact distribution equipment which is integrated according to a certain wiring scheme, namely, the functions of transformer voltage reduction, low-voltage distribution and the like are organically combined together and installed in a fully-closed and movable steel structure box, so that the transformer is particularly suitable for urban network construction and transformation and is a brand-new transformer substation grown up after a civil transformer substation. Along with the development of internet, wisdom box-type substation is more and more by being applicable to in mine, factory enterprise, oil gas field and wind power station, and it combines with the internet promptly, can realize control, the supervision of remote end, and it has replaced original civil engineering block terminal, and the block terminal becomes neotype complete set transformer substation. Along with box-type substation's intellectuality then, its inside has set up a lot of electronic information systems certainly, in addition its itself just includes distribution equipment, so when outdoor setting uses, especially under bad weather such as thunderstorm, box-type substation has very big potential safety hazard, and the thunder and lightning makes the inside electronic equipment of transformer substation the condition of overvoltage appear easily for each electronic equipment suffers the harm, can't use, and leads to its power supply institute to receive the influence thereupon. Therefore, in order to improve the operation stability of such an intelligent box-type substation with many electronic devices, it is necessary to provide a new substation.

Disclosure of Invention

The utility model aims to provide a: in order to overcome the defects, the intelligent box-type substation is provided to improve the stability of the operation of the substation.

In order to achieve the above purpose, the technical scheme of the utility model is that: an intelligent box-type substation comprises a substation body, wherein the substation body comprises a power supply device and electronic electric equipment, the power supply device supplies power for the electronic electric equipment, a protection circuit is arranged at the output end of the power supply device, the protection circuit comprises a high-voltage measuring element resistor and a protection element, and the high-voltage measuring element is connected to the output end of the power supply device and used for consuming overhigh voltage in the protection circuit; the protection element is connected with the high voltage measurement element, and when the voltage on the high voltage measurement element is overlarge, the protection element can be disconnected so as to disconnect the whole protection circuit, so that the electric equipment is prevented from being damaged by the high voltage.

Further, the high voltage measuring element is a resistor R1, and the protection element is a fuse F3.

Further, the protection circuit further comprises fuses F1-F2, resistors R2-R7, capacitors C1-C4, a triode Q2 and an isolation element U1, wherein the isolation element U1 consists of a diode D5 and a triode Q1, one end of the fuse F1 is connected with one end of the fuse F2 and one output end of a power supply device, the other end of the fuse F2 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of the fuse F3, the other end of the fuse F3 is connected with the other end of the resistor R3 and the other output end of the power supply device, and one end of the resistor R3 is connected with the other end of the fuse F1; one end of a resistor R4 is connected with one end of a resistor R6 and one end of an inductor L1, the other end of the resistor R4 is connected with one end of a resistor R5, the other end of a resistor R5 is connected with one end of a resistor R7 and one end of an inductor L1, the other end of the resistor R6 is connected with the other end of an inductor L1, and the other end of the resistor R7 is connected with the other end of an inductor L2; the other end of the inductor L1 is connected to a base electrode of a triode Q2, the other end of the inductor L1 and an emitter electrode of the triode Q2 are grounded, a collector electrode of the triode Q2 is connected to capacitors C1-C2 and one end of a diode D5 in an isolation element, the capacitors C1-C2 and the other end of the diode D5 are grounded, a collector electrode of the triode Q1 in the isolation element U1 is connected to one ends of capacitors C3 and C4, an emitter electrode of the triode Q1 is connected to the other ends of the capacitors C3 and C4, and two ends of the capacitor C4 are output ends to output signals.

Since the proposal is adopted, the beneficial effects of the utility model reside in that: the utility model provides a not enough of prior art, the utility model provides a wisdom box-type substation, its benefit is:

(1) the utility model discloses a be equipped with protection circuit on box-type substation's inside power supply device, can avoid appearing thunder and lightning weather and make the inside electronic equipment of wisdom box-type substation who has too much electronic equipment, electronic system overvoltage appear easily for each electronic equipment suffers the harm, can't use, and leads to its power supply institute to receive the condition of influence thereupon, has improved the stability of whole box-type substation work.

(2) The utility model discloses circuit structure is simple, and it sets up at the output of power supply source device, even so under the condition that does not have thunder and lightning weather, the circuit can protect the signal of power supply source device output for the signal stability of transmission to other power consumption components just does not have unnecessary interference signal, avoids influencing the normal operating of other equipment, has improved the stability of whole box-type substation operation.

Drawings

Fig. 1 is a schematic circuit block diagram of a substation according to the present invention.

Fig. 2 is a circuit diagram of the protection circuit of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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 in specific cases to those skilled in the art.

Examples

As shown in fig. 1-2, a wisdom box-type substation, including the transformer substation body, the transformer substation body is the same with current box-type substation, including power supply source device and each electronic consumer, power supply source device is the power supply of each electronic consumer, but when bad weather such as thunder and lightning, box-type substation is because set up in the open air and it has too much electronic equipment, and the condition of overvoltage appears very easily, so can make its consumer damage unable normal work, so the utility model discloses an improve its stability of working in thunder and lightning weather, be equipped with protection circuit at the output of the power supply source device of transformer substation body to under the thunder and lightning condition that the transformer substation meets the high voltage, in time avoid inside each electronic equipment to appear damaging the drawback that can't move.

The protection circuit comprises fuses F1-F3, resistors R1-R7, capacitors C1-C4, a conducting element and an isolating element U1, wherein the isolating element U1 is a photoelectric coupler and consists of a diode D5 and a triode Q1, the resistors R1-R3 are piezoresistors, and the conducting element is a triode Q2.

One end of a fuse F1 is connected with one end of a fuse F2 and one output end of a power supply device, the other end of a fuse F2 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with one end of a resistor R2, the other end of a resistor R2 is connected with one end of a fuse F3, the other end of the fuse F3 is connected with the other end of a resistor R3 and the other output end of the power supply device, and one end of the resistor R3 is connected with the other end of a fuse F1; one end of a resistor R4 is connected with one end of a resistor R6 and one end of an inductor L1, the other end of the resistor R4 is connected with one end of a resistor R5, the other end of a resistor R5 is connected with one end of a resistor R7 and one end of an inductor L1, the other end of the resistor R6 is connected with the other end of an inductor L1, and the other end of the resistor R7 is connected with the other end of an inductor L2; the other end of the inductor L1 is connected to a base electrode of a triode Q2, the other end of the inductor L1 and an emitter electrode of the triode Q2 are grounded, a collector electrode of the triode Q2 is connected to capacitors C1-C2 and one end of a diode D5 in an isolation element, the capacitors C1-C2 and the other end of the diode D5 are grounded, a collector electrode of the triode Q1 in the isolation element U1 is connected to one ends of capacitors C3 and C4, an emitter electrode of the triode Q1 is connected to the other ends of the capacitors C3 and C4, and two ends of the capacitor C4 are output ends to output signals.

Specifically speaking, because the utility model discloses protection circuit's input is connected with the power supply device in the transformer substation, so when meeting with the thunderbolt, its input at first can produce high-voltage electricity, this application passes through fuse and piezo-resistor's being connected, when meeting with the thunderbolt, the voltage at piezo-resistor both ends can exceed its operating voltage, piezo-resistor self resistance descends, make highly compressed energy consumption on piezo-resistor, piezo-resistor is then equivalent to the wire so, this moment, because too big electric current, the fuse can burn out by oneself, thereby avoided in the high-voltage can get into each consumer of transformer substation through this circuit, and then each electronic consumer in having avoided the transformer substation is damaged by high-voltage. And fuses F2 and F3 are connected in series at two ends of the piezoresistors RI and R2, so that the whole circuit can be prevented from being ignited when the lightning voltage is overlarge, and the safe operation of the whole transformer station is ensured. When high voltage is not generated, an output signal of the power supply device can be stably output to a rear-stage circuit through the protection circuit, namely the output signal passes through a filter circuit consisting of inductors L1-L2 and resistors R6-R7, the signal can be filtered, the phenomenon that miscellaneous signals in the circuit are transmitted to a subsequent circuit to influence the normal operation of each circuit is avoided, the signal is transmitted to a base electrode of a triode Q2 after being filtered, at the moment, the triode Q2 is electrified and conducted, the signal can be continuously transmitted to the subsequent circuit, the signal is transmitted to an isolation element U1 after being secondarily filtered through capacitors C1-C2, the signal is further electrically isolated through an isolation element U1, and the phenomenon that an interference signal at an output end is fed back to the operating circuit to influence the normal operation of the circuit is avoided. The output end is also provided with capacitors C3-C4, so that signals transmitted to other electric elements are stable and do not have redundant interference signals, normal operation of other equipment is prevented from being influenced, and the stability of operation of the whole box-type substation is improved.

Parts not described in the above modes can be realized by adopting or referring to the prior art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a wisdom box-type substation, includes the transformer substation body, and the transformer substation body includes power supply source device and each electronic consumer, and power supply source device is the power supply of each electronic consumer, its characterized in that: the output end of the power supply device is provided with a protection circuit, the protection circuit comprises a high voltage measuring element resistor and a protection element, and the high voltage measuring element is connected to the output end of the power supply device and used for consuming the over-high voltage in the protection circuit; the protection element is connected with the high voltage measurement element, and when the voltage on the high voltage measurement element is overlarge, the protection element can be disconnected so as to disconnect the whole protection circuit, so that the electric equipment is prevented from being damaged by the high voltage.

2. The intelligent box-type substation of claim 1, characterized in that: the high voltage measuring element is a resistor R1, and the protection element is a fuse F3.

3. The intelligent box-type substation of claim 2, characterized in that: the protection circuit further comprises fuses F1-F2, resistors R2-R7, capacitors C1-C4, a triode Q2 and an isolation element U1, wherein the isolation element U1 consists of a diode D5 and a triode Q1, one end of the fuse F1 is connected with one end of the fuse F2 and one output end of a power supply device, the other end of the fuse F2 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of the fuse F3, the other end of the fuse F3 is connected with the other end of the resistor R3 and the other output end of the power supply device, and one end of the resistor R3 is connected with the other end of the fuse F1; one end of a resistor R4 is connected with one end of a resistor R6 and one end of an inductor L1, the other end of the resistor R4 is connected with one end of a resistor R5, the other end of a resistor R5 is connected with one end of a resistor R7 and one end of an inductor L1, the other end of the resistor R6 is connected with the other end of an inductor L1, and the other end of the resistor R7 is connected with the other end of an inductor L2; the other end of the inductor L1 is connected to a base electrode of a triode Q2, the other end of the inductor L1 and an emitter electrode of the triode Q2 are grounded, a collector electrode of the triode Q2 is connected to capacitors C1-C2 and one end of a diode D5 in an isolation element, the capacitors C1-C2 and the other end of the diode D5 are grounded, a collector electrode of the triode Q1 in the isolation element U1 is connected to one ends of capacitors C3 and C4, an emitter electrode of the triode Q1 is connected to the other ends of the capacitors C3 and C4, and two ends of the capacitor C4 are output ends to output signals.