CN211453770U

CN211453770U - Wide-area synchronous power sensing device

Info

Publication number: CN211453770U
Application number: CN201922291714.3U
Authority: CN
Inventors: 倪贵成; 朱志明; 傅岳林; 罗治军
Original assignee: Silverfern Power Technologies Co ltd
Current assignee: Silverfern Power Technologies Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-08
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a wide area synchronous power sensing device, this device divide into main part device and assist the body device, contain parts such as first cavity, second cavity, the screw rod mechanism that opens and shuts, first voltage measurement unit and be the main part device, contain second voltage measurement unit for assisting the body device, main part device and assist the body device and be the separation status before the installation. The utility model discloses this wide area synchronous power sensing device and the ground point of forming physics in the ground use voltage partial pressure principle to measure line voltage, use current transformer principle to measure line current, can monitor line voltage and line current simultaneously and realize power measurement, measure that the accuracy is high, with low costs and light in weight, the installation is dismantled conveniently, and the reliability is high.

Description

Wide-area synchronous power sensing device

Technical Field

The utility model relates to a wide area synchronous power sensing device.

Background

The existing distribution overhead line (380V-110 kV) is a fault line with multiple faults, and a large number of sensing devices are needed to simultaneously and continuously measure the voltage and the current of a power line so as to realize the monitoring and fault location of the line. Because the problems of power grid operation cost, power grid operation safety and the like need the device to have a physical grounding point to ensure the accuracy of voltage measurement, and a sensing device is required to be safely, conveniently and quickly installed at a measuring position required by a power line, so that the locking power line can be ensured not to cause accidents of rotation, sideslip, even falling and the like of the device. Under most installation conditions, the sensing device is required to be capable of being carried out under the condition that a power grid is not powered off when being installed or detached, and the sensing device is required to be capable of safely and quickly opening, hanging a power line, closing and locking the power line and connecting a grounding wire by using an insulating operating rod.

The existing sensors for overhead power lines can only realize the function of measuring line current, or some sensors simulate and estimate the voltage of a power line through electric field measurement, but have no physical grounding point in the principle of electric field measurement, are greatly influenced by climate and geographical environment, have large measurement result errors, and cause high false alarm rate and false missing alarm rate of power grid faults.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model aims at providing a wide area synchronous power sensing device, this wide area synchronous power sensing device and the ground point of forming physics greatly use voltage partial pressure principle to measure line voltage, use current transformer principle to measure line current, can monitor line voltage and line current simultaneously and realize power measurement, measure that the accuracy is high, with low costs and light in weight, the installation is dismantled conveniently, and the reliability is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wide-area synchronous power sensing device comprises a shell, a voltage measuring mechanism and an electronic circuit board arranged in the shell, wherein a cavity is arranged in the shell,

the shell comprises an upper shell and a lower shell which can be separated from each other, the cavity comprises a first cavity and a second cavity which are oppositely arranged in the upper shell and the lower shell, an upper semi-cylinder groove and a lower semi-cylinder groove are respectively arranged on the first cavity and the second cavity, the first cavity and the second cavity are correspondingly arranged and are also arranged on an axis, current transformers are also arranged on the first cavity and the second cavity and are respectively arranged on two sides of the corresponding upper semi-cylinder groove and the corresponding lower semi-cylinder groove, and the current transformers are electrically connected with the electronic circuit board;

the power line locking device comprises a shell, and is characterized by further comprising an opening and closing locking mechanism which is arranged in the central axis of the shell and is perpendicular to the shell, wherein the opening and closing locking mechanism comprises an opening and closing screw rod, a pressure spring, a power line locking sliding block and power line locking calipers, the power line locking sliding block is located in the cavity, the power line locking sliding block is connected with the first cavity through the pressure spring, the power line locking calipers are fixed on the second cavity and are arranged corresponding to the power line locking sliding block, the opening and closing screw rod sequentially penetrates through the second cavity and the power line locking sliding block from bottom to top and is stopped in the first cavity, and the power line locking sliding block is displaced towards the power line locking calipers and is pressed and arranged under the;

the voltage measuring mechanism is arranged on the side edge of the shell and comprises a first voltage measuring unit and a second voltage measuring unit, the first voltage measuring unit and the second voltage measuring unit are mutually independent units, the first voltage measuring unit is electrically connected with an electronic circuit board and a power line locking caliper in the second cavity, the first voltage measuring unit is electrically connected with the second voltage measuring unit, and the second voltage measuring unit is grounded.

Preferably, the wide area synchronous power sensing device, the first voltage measurement unit includes a first electron PT, a disconnector and a short-circuit hook, the top of the first electron PT is installed in the second cavity, and the top of the first electron PT is provided with an electrical connection point which forms an electrical connection with the power line locking caliper and the electronic circuit board, respectively, the bottom of the first electron PT is connected with the top of the disconnector, the bottom of the disconnector is connected with one end of the short-circuit hook, and the other end of the short-circuit hook is connected with the second voltage measurement unit.

Preferably, the second voltage measuring unit includes a second electronic PT, a short-circuit line, a short-circuit ring and a grounding cross arm, the short-circuit ring is sleeved on the short-circuit hook to form an electrical connection, the short-circuit ring is connected with the short-circuit line and is arranged in an integrated structure, the bottom of the short-circuit line is connected with the second electronic PT, the second electronic PT is fixed with the grounding cross arm through screws, and the grounding cross arm is connected with a grounding wire of a telegraph pole.

Preferably, a wide area synchronous power sensing device, power line locking calliper comprises first power line locking calliper and second power line locking calliper, and first power line locking calliper and second power line locking calliper are equipped with rake teeth shape structure respectively, are intercrossing on the rake teeth space of first power line locking calliper and second power line locking calliper, wherein, power line locking calliper is the metal material.

Preferably, the wide area synchronous power sensing device, first power line locking calliper and second power line locking calliper be equipped with the pivot, first power line locking calliper passes through calliper clamp plate with second power line locking calliper and installs on the second cavity, first power line locking calliper and second power line locking calliper use self pivot to rotate the setting as the axle center under the exogenic action.

Preferably, the wide area synchronous power sensing device, the current transformer comprises a current transformer and a current transformer, the current transformer comprises an upper current transformer and a lower current transformer, the upper current transformer and the upper current transformer are mounted in a first cavity, an elastic moving part is arranged on the top of the current transformer in the first cavity, the lower current transformer and the lower current transformer are mounted in a second cavity, wherein the iron core of the upper current transformer and the iron core of the upper current transformer are distributed on the left and right sides of the first cavity, the iron core of the lower current transformer and the iron core of the lower current transformer are distributed on the left and right sides of the second cavity, and when the upper shell and the lower shell are closed, the iron core of the current transformer forms a closed end face at the joint of the first cavity and the second cavity.

Preferably, in the wide area synchronous power sensing device, a lateral pressure type special-shaped waterproof ring is arranged around the end surface of the current transformer iron core, and a special-shaped waterproof ring pressing plate is arranged at the upper end of the special-shaped waterproof ring.

Preferably, a wide area synchronous power sensing device, be provided with first power line income groove limit guide and second power line income groove limit guide on first cavity and the second cavity respectively, be located current transformer's periphery setting, and still be located the front end setting in first semi-cylinder groove and lower semi-cylinder groove, first power line income groove limit guide and second power line income groove limit guide highly be greater than the waterproof circle top height of dysmorphism on the current transformer, be provided with the spacing shelves pole of power line on the second cavity, be located the rear end setting in lower semi-cylinder groove to be higher than the top height setting in power line income groove limit guide.

Preferably, the wide area synchronous power sensing device, the opening and closing screw comprises a locking screw, a damping disc, a steel ball, a damping spring, a clutch lever, a damping nut, a locking pin and a hanging ring, the top of the locking screw is provided with an external thread screwed with an internal thread arranged on the power line locking slider, the bottom of the locking screw is provided with an internal thread screwed with an external thread arranged on the outer side of the damping nut, the lower half structure of the locking screw is provided with a clutch cavity, the damping disc, the steel ball, the damping spring, the clutch lever and the damping nut are mutually matched to form a clutch component, the clutch component is arranged in the clutch cavity of the lower half structure of the locking screw, the bottom of the clutch lever is connected with the hanging ring and fixed by the locking pin, the locking pin penetrates through the clutch lever and the hanging ring in the direction perpendicular to the opening and closing screw, the bottom of the damping disc and the top of the clutch lever are respectively provided with a semicircular steel, the damping spring is sleeved on the clutch lever.

Preferably, the wide area synchronous power sensing device, the second cavity lower end face be provided with fin, LED lamp shade and inside and outside atmospheric pressure balanced valve, fin, LED lamp shade and inside and outside atmospheric pressure balanced valve and second cavity lower end face between be provided with waterproof sealing washer. Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:

1. the utility model discloses the device forms the ground point of physics with the earth, uses voltage partial pressure principle to measure line voltage, uses current transformer principle to measure current, can monitor line voltage and line current simultaneously to calculate circuit operating power, information such as harmonic measure the accuracy height, the electrified installation of accessible insulating bar is dismantled.

2. The utility model discloses only use a locking screw, power line locking slider and power line locking calliper linkage that drives the inside power line of device when revolving wrong locking screw realize the quick opening of device, closure and locking power line, fine solution some on the market with the defect of device twin-screw even three screw rods of the same type, the effectual cost and the weight that have reduced the device to the reliability of product has been improved.

3. The utility model can be safely, conveniently and quickly completed no matter manually installed or installed by using the insulating operating rod, and the device can be self-adapted to power lines with different diameters when installed; after the power line is closed and locked, the device can be ensured not to rotate and sideslip even under severe weather environments (strong wind, rainstorm, snowstorm, freezing and the like).

4. The locking screw linkage mechanism and the device internal elastic movement mechanism of the utility model can ensure that the current transformer for taking electricity and the current transformer for measuring electricity are well closed; a waterproof mechanism at the section of the current transformer ensures that the current transformer has a good closed space at the section, so that the current transformer cannot rust.

5. The utility model discloses the power line guide structure that the well was equipped with hangs the power line in-process at the device, and the cylinder inslot that the convenient safe device that slides in of power line was equipped with when both can effectively guaranteeing the installation can effectively protect the mutual-inductor cross-section not to receive the dirty invasion in power line surface again.

6. The utility model discloses the power line locking slider that the well was equipped with locks calliper interlock structure with the power line, the power line in the different line footpath of locking that can self-adaptation promptly.

7. The utility model discloses overall structure is simpler, and it is more simple and convenient to operate, and occupation space still less.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of an overall structure of a wide area synchronous power sensing device according to the present invention;

fig. 2 is a schematic diagram of a second voltage measuring unit of the wide-area synchronous power sensing device of the present invention;

fig. 3 is a schematic bottom view of the first cavity of the wide area synchronous power sensor of the present invention;

fig. 4 is a schematic top view of a second cavity of the wide area synchronous power sensor of the present invention;

fig. 5 is a schematic bottom view of a second cavity of the wide area synchronous power sensor of the present invention;

fig. 6 is a schematic diagram of a first cross-sectional structure of a wide-area synchronous power sensor device according to the present invention;

fig. 7 is a schematic diagram of a second cross-sectional structure of a wide-area synchronous power sensor device according to the present invention;

fig. 8 is a schematic diagram of a third cross-sectional structure of a wide-area synchronous power sensor according to the present invention;

fig. 9 is a schematic view of the opening/closing screw structure of the wide area synchronous power sensor of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" 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 to simplify the 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 should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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" or "second" 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 specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in figures 1 to 9 of the drawings,

a wide area synchronous power sensing device comprises a shell 100, an electronic circuit board and a voltage measuring mechanism, wherein the electronic circuit board and the voltage measuring mechanism are arranged in the shell, a cavity is arranged in the shell 100, the shell comprises an upper shell and a lower shell which can be separated from each other, the cavity comprises a first cavity 201 and a second cavity 202 which are oppositely arranged in the upper shell and the lower shell, the first cavity 201 and the second cavity 202 are respectively provided with an upper semi-cylinder groove 403 and a lower semi-cylinder groove 503 which are correspondingly arranged and are also arranged on an axis, current transformers are also arranged in the first cavity 201 and the second cavity 202 and are respectively arranged on the left side and the right side of the first cavity 201 and the second cavity 202, and the current transformers are electrically connected with the electronic circuit board; still including opening and shutting locking mechanism 203, set up in the axis department of casing 100, constitute perpendicular setting with the casing, opening and shutting locking mechanism 203 is including opening and shutting screw rod 701, pressure spring, power line locking slider 702 and power line locking calliper, power line locking slider 702 be located the cavity in, be connected through the pressure spring between power line locking slider 702 and the first cavity 201, on power line locking calliper was fixed in second cavity 202, with the corresponding setting of power line locking slider 702, opening and shutting screw rod 701 to down and run through second cavity, power line locking slider in proper order, end in first cavity inside, under the wrong of screwing of opening and shutting screw rod, make power line locking slider to power line locking calliper displacement and looks pressfitting setting.

As shown in fig. 2 and 4, the voltage measuring mechanism includes a first voltage measuring unit 204 and a second voltage measuring unit 205 that are separated from each other, the first voltage measuring unit 204 includes a first electronic PT 510, a detacher 511, and a short-circuit hook 512, the top of the first electronic PT 510 is installed in the second cavity 202, the top of the first electronic PT 510 is provided with an electrical connection point to form electrical connection with the power line locking caliper and the electronic circuit board, the bottom of the first electronic PT 510 is connected with the detacher 511, and the bottom of the detacher 511 is connected with the short-circuit hook 512; the second voltage measurement unit 205 comprises a second electron PT 301, a short circuit line 302, a short circuit ring 303 and a grounding cross arm 304; when the short circuit ring 303 is installed, the short circuit ring 303 is sleeved on the short circuit hook 512 to form an electric connection, the short circuit ring 303 and the short circuit line 302 are integrated, the bottom of the short circuit line 302 is connected with the second electronic PT 301, the second electronic PT 301 is fixed with the grounding cross arm 304 through screws, and the grounding cross arm 304 is connected with a grounding wire of a telegraph pole.

The power line locking slider 702 is connected with the first cavity 201 through a first pressure spring 801, a second pressure spring 802, a third pressure spring 803 and a fourth pressure spring 804.

The first cavity 201 is a first cavity of the current transformer, and the second cavity 202 is a second cavity of the current transformer and the electronic circuit board.

Two guide rods are arranged between the first cavity 201 and the second cavity 202, but not limited to two guide rods, the two guide rods are distributed on the left side and the right side of the opening and closing screw 701, the direction of the two guide rods is parallel to that of the opening and closing screw 701, and the second cavity 202 is connected with the opening and closing screw 701 through a screw pressing cap 603 at the bottom of the screw.

The utility model discloses well current transformer's iron core top is provided with the elastic moving part, and this elastic moving part can be metal spring or metal shrapnel, but not only limits in metal spring or metal shrapnel, the lower part of first cavity 201 and the upper portion of second cavity 202 respectively are equipped with the first semi-cylinder groove 403 and lower semi-cylinder groove 503 that correspond each other, be provided with waterproof circle of dysmorphism 504 around the iron core terminal surface of second cavity 202 current transformer, waterproof circle of dysmorphism 504 top is equipped with waterproof circle clamp plate of dysmorphism 505, be equipped with fin 602, screw rod pressure cap 603 and LED lamp shade 604, inside and outside atmospheric pressure balanced valve 605 below the second cavity 202.

The current transformer comprises a current transformer for taking electricity and a current transformer for measuring. The power taking current transformer is used for supplying power to a rear-stage electronic circuit board from the power line induction energy; the measuring current transformer is used for measuring the current information of the power line.

The power line locking caliper is made of metal and is connected with the first electronic PT 510 and the electronic circuit board, and after the locking caliper is contacted with the bare conductor, the locking caliper is electrically connected with the bare conductor to transmit the potential of the power line to the first electronic PT 510 and the electronic circuit board; the grounding cross arm 304 is connected to the ground potential of the utility pole, and since the second electronic PT 301 is mounted on the grounding cross arm 304, the grounding cross arm 304 transmits the ground potential to the second electronic PT 301.

The first electron PT 510 and the second electron PT 301 may be, but not limited to, a resistive PT or a capacitive PT; electrically sequentially passing through a bare conductor, a power line locking caliper, a first electronic PT 510, a disconnector 511, a short-circuit hook 512, a short-circuit ring 303, a short-circuit line 302, a second electronic PT 301, a grounding cross arm 304 and a telegraph pole ground potential; finally, the first electron PT 510 and the second electron PT 301 form a voltage division circuit, one end of the voltage division circuit is a power line potential, and the other end of the voltage division circuit is an earth potential; the first electron PT 510 forms a high-voltage arm, the second electron PT 301 forms a low-voltage arm, and the electronic circuit board obtains the voltage information of the current power line by measuring the voltage value of the high-voltage arm in the voltage division circuit. The utility model discloses when the product is realized, in order to save the cost and reduce the volume, according to the power line voltage grade difference, can close first electron PT and second electron PT as an organic whole structurally, this difference that only realizes for the product does not influence the utility model discloses the realization that the device passes through the bleeder circuit principle and measures the power line voltage.

The first electronic PT 510 has a smaller resistance value or a larger capacitance value, the second electronic PT 301 has a larger resistance value or a smaller capacitance value, and the second electronic PT 301 has a different resistance value or capacitance value at different voltage levels. When the capacitor PT is adopted, the power line can acquire energy and supply the energy to a rear-stage electronic circuit board for power supply.

And the electronic circuit board processes the power line current information acquired by the measuring current transformer and the power line voltage information acquired by the voltage measuring mechanism by utilizing the energy sensed by the current-taking current transformer or the energy acquired by the capacitor PT, and finally sends information results such as the current information, the voltage information, the processed power, the harmonic wave and the like to the background data monitoring center through a wireless interface. The above-mentioned electronic circuit board is conventional technology known to those skilled in the art, and will not be described in any detail herein.

The first cavity 201 is used for mounting the upper half part of the current transformer and is matched with the second cavity 202. When the device is closed, the power line is fixed in the closed upper semi-cylindrical groove 403 and lower semi-cylindrical groove 503, so that the power line is positioned in the center of the magnetic field loop of the current transformer;

and a second cavity 202 for mounting the lower half part of the current transformer and matching with the first cavity 201. When the device is closed, the power line is fixed in the closed upper semi-cylindrical groove 403 and lower semi-cylindrical groove 503, so that the power line is positioned in the center of the magnetic field loop of the current transformer;

meanwhile, the second cavity 202 is also used for mounting components such as an electronic circuit board unit, an energy storage element, an antenna and the like.

The opening and closing locking mechanism 203 comprises an opening and closing screw 701, a power line locking sliding block 702, a first pressure spring 801, a second pressure spring 802, a third pressure spring 803, a fourth pressure spring 804, a screw pressing cap 603, a first power line locking caliper 506 and a second power line locking caliper 507, and is connected with the first cavity 201 and the second cavity 202, the opening and closing of the first cavity 201 and the second cavity 202 are realized by screwing the opening and closing screw, the power line is finally locked by the power line locking sliding block 702, the first power line locking caliper 506 and the second power line locking caliper 507, the device cannot rotate or sideslip on a power line, and the power line locking caliper and the power line are electrically connected.

The utility model discloses in power line locking calliper is by first power line locking calliper 506 and second power line locking calliper 507, and first power line locking calliper 506 and second power line locking calliper 507 are equipped with rake teeth shape structure respectively, and the rake teeth space intercrossing of first power line locking calliper 506 and second power line locking calliper 507, wherein, the rake teeth quantity of first power line locking calliper 506 and second power line locking calliper 507 is not limited.

The utility model discloses in first power line locking calliper 506 and second power line locking calliper 507 be equipped with the pivot, first power line locking calliper 506 and second power line locking calliper 507 install on second cavity 202 through calliper clamp plate, first power line locking calliper 506 and second power line locking calliper 507 use self pivot as the axle center rotation under the exogenic action.

The utility model discloses well casing 100 comprises first cavity 201, second cavity 202, power line locking mechanism 203, first voltage measurement unit 204, second voltage measurement unit 205.

The first cavity 201 and the second cavity 202 are respectively provided with an upper semi-cylinder groove 403 and a lower semi-cylinder groove 503 for placing power lines in the horizontal central axis direction, when the first cavity 201 and the second cavity 202 are closed, the upper semi-cylinder groove 403 and the lower semi-cylinder groove 503 of the first cavity 201 and the second cavity 202 form a cylindrical groove body, the device is suspended on the power lines and is closed, and the power lines penetrate through the cylindrical groove body, so that the power lines are located at the magnetic circuit center positions of the current-taking current transformer and the measuring current transformer.

The second cavity 202 includes a third shell 303, a fourth shell 304, a lower half-part electricity-taking current transformer wound core and a lower half-part measuring current transformer wound core inside the cavity, corresponding bobbin and wound coil, an electronic circuit board, an energy storage element, an antenna, and other components.

Fig. 2 shows a schematic side view of the second measurement unit 205, which includes the second electronic PT 301, the short circuit wire 302, the short circuit hook 303, and the grounding cross arm 304.

Fig. 3 shows a schematic view of the bottom view structure of the upper cavity assembly of the current transformer in the first cavity 201, the cavity includes a first shell 301, a second shell 302, an upper half core 402 of the measuring current transformer, an elastic movable member of the measuring current transformer, an upper half core 401 of the taking current transformer, and an elastic movable member of the taking current transformer, the upper half core 401 of the taking current transformer and the upper half core 402 of the measuring current transformer are distributed on the left and right sides of the first cavity 201; a waterproof sealing ring is arranged between the first shell 301 and the second shell 302 to ensure that the interior of the first cavity 201 is sealed and waterproof.

Fig. 4 shows a schematic diagram of a current transformer of the second cavity 202 and a cavity overlooking structure under an electronic circuit board, where the second cavity 202 includes a third shell 303, a fourth shell 304, a power line locking caliper composed of a first power line locking caliper 506 and a second power line locking caliper 507, a lower half iron core 501 of a current transformer, a winding skeleton of the current transformer, a winding coil of the current transformer, a lower half iron core 502 of the current transformer, a winding skeleton of the current transformer, a winding coil of the current transformer, a special-shaped waterproof ring 504, a second side-pressing special-shaped waterproof ring 505, a special-shaped waterproof ring pressing plate, a first electronic 510, a detacher 511, a short-circuit hook 512, and the like; the lower half iron core 501 of the current-taking current transformer and the lower half iron core 502 of the measuring current transformer are distributed on the left side and the right side of the second cavity 202; a waterproof sealing ring is arranged between the third shell 303 and the fourth shell 304 to ensure that the interior of the second cavity 202 is sealed and waterproof.

Fig. 5 shows a schematic diagram of a bottom view of the current transformer and the electronic circuit board in the second cavity 202, where the second cavity 202 includes a third housing 303, a fourth housing 304, an electronic circuit board, a heat sink 602, a screw cap 603, an LED lamp cover 604, an internal and external air pressure balance valve 605, an energy storage element, an antenna, and the like. Waterproof sealing rings are arranged on the periphery of the fourth shell 304, the periphery of the cooling fin 602, the periphery of the LED lamp cover 604 and the periphery of the internal and external air pressure balance valve 605, so as to ensure that the interior of the second cavity 202 is sealed and waterproof.

Fig. 6, 7 and 8 show structural schematic diagrams of an opening and closing locking assembly, which comprises an opening and closing screw 701, a power line locking slider 702, a first pressure spring 801, a second pressure spring 802, a third pressure spring 803, a fourth pressure spring 804, a first power line locking caliper 506 and a second power line locking caliper 507.

As shown in fig. 9, the opening and closing screw 701 has a clutch function, and includes a locking screw 901, a damping disc 902, a steel ball 903, a damping spring 904, a clutch rod 905, a damping nut 906, a locking pin 907, and a hanging ring 908, wherein the top of the locking screw 901 is provided with an external thread connected to the internal thread of the power line locking slider 702, the bottom of the locking screw 901 is provided with an internal thread connected to the external thread of the damping nut 906, the lower half structure of the locking screw 901 is provided with a clutch cavity, the damping disc 902, the steel ball 903, the damping spring 904, the clutch rod 905, and the damping nut 906 are mutually matched to form a clutch assembly and are installed in the clutch cavity of the lower half structure of the locking screw 901, the bottom of the clutch rod 905 is connected to the hanging ring 908 and is fixed by the locking pin 907, the locking pin penetrates through the clutch rod 905 and the hanging ring 908 in a direction perpendicular to the opening and closing, the steel balls 903 are placed in circular grooves formed by the damping disc 902 and the clutch lever 905.

The working principle of the utility model is as follows:

the device is divided into a main body device and an auxiliary body device, wherein the main body device comprises a first cavity 201, a second cavity 202, an opening and closing screw rod mechanism 203, a first voltage measuring unit 204 and other parts, and the auxiliary body device comprises a second voltage measuring unit 205 and other parts; the main body device and the auxiliary body device are in a separated state before installation.

When the main body device of the utility model is in a closed state, the lower part of the screw rod of the opening and closing screw rod 701 is matched with the screw rod pressing cap 603, the opening and closing screw rod 701 and the second cavity 202 are ensured to be integrated all the time, no displacement occurs, the opening and closing screw rod 701 is twisted, the twisting force is transmitted to the internal thread of the power line locking slider 702 through the external thread of the upper half part of the opening and closing screw rod 701, so that the power line locking slider 702 starts to move vertically upwards, when the power line locking slider 702 moves to contact with the first cavity 201, the first cavity 201 starts to be jacked up vertically upwards, and the first cavity 201 is moved vertically upwards along the direction of the opening and closing screw rod 701; gradually separating the first cavity 201 from the second cavity 202; an opening and closing screw 701 and guide rods on the left side and the right side of the opening and closing screw are arranged between the first cavity 201 and the second cavity 202 so as to ensure that the first cavity 201 and the second cavity 202 cannot laterally displace or rotate in the separation process; the guide rod also has a limiting mechanism to ensure that the limiting mechanism acts when the first cavity 201 and the second cavity 202 are separated to the designed maximum distance, so that the first cavity 201 and the second cavity 202 cannot be separated from each other.

In the opening process, the first cavity 201 is gradually separated from the second cavity 202 under the pushing of the power line locking slider 702 to form a certain opening, and the device slides the power line into the upper half cylindrical groove 403 of the first cavity 201 through the opening, so that the device is hung on the power line.

The first cavity 201 and the second cavity 202 are respectively designed with power line in-slot limit rails 404 and 508 and a power line limit stop rod 509. First power line in-slot limiting guide 404 and second power line in-slot limiting guide 508 are distributed on both sides of the cross section of the current transformer of first cavity 201 and second cavity 202, are higher than the cross section of the transformer and the top surface of the waterproof ring of the cross section of the transformer, and the power line limiting stop rod 509 is located outside the lower semi-cylindrical groove body 503.

When the first cavity 201 and the second cavity 202 are separated to be in an opening state, the device slides the power line into the upper semi-cylindrical groove 403 through the opening, the first power line in-groove limiting guide rail 404 and the second power line in-groove limiting guide rail 508 can limit the power line, and the power line is prevented from rubbing the waterproof ring of the cross section of the mutual inductor and the cross section of the mutual inductor at the front side of the device due to the fact that the height of the first power line in-groove limiting guide rail 404 and the height of the second power line in-groove limiting guide rail 508 are higher than the top surface of the waterproof ring of the cross section of. After the power line entered the upper semi-cylindrical body groove 403, when the power line moved inward again, the power line stop rod 509 acted so that the power line could not cross the rear side transformer section and the transformer section waterproof ring of the device, so that the power line finally stayed in the upper semi-cylindrical body groove 403.

The utility model discloses in first power line income groove limit guide 404 and second power line income groove limit guide 508 and the spacing shelves pole 509 combined action of power line let the power line finally fall to the first cylinder groove 403 position that the power line should be located at whole hanging wire in-process for foul and dust on power line surface can not fall into the mutual-inductor surface, have guaranteed that the mutual-inductor cross-section is not invaded by the dirty invasion in power line surface.

When the main body device is in an open state, the lower part of the opening and closing screw 701 is matched with the screw pressing cap 603 and the guide rod is limited, so that the opening and closing screw 701 and the second cavity are always integrated, and rotation and lateral movement are avoided. After the power line is placed in the semicircular groove body 403, the opening and closing screw 701 is reversely screwed, the screwing force is transmitted to the internal thread of the power line locking slide block 702 through the external thread on the upper half part of the opening and closing screw 701, so that the power line locking slide block 702 starts to vertically move downwards, because the first pressure spring 801, the second pressure spring 802, the third pressure spring 803 and the fourth pressure spring 804 are arranged between the power line locking slide block 702 and the first cavity body 201 in the vertical direction of the opening and closing screw 701 and connected, when the power line locking slide block 702 moves downwards, the first cavity body 201 is driven to vertically move downwards along the opening and closing screw 701 and the guide rod through the first pressure spring 801, the second pressure spring 802, the third pressure spring 803 and the fourth pressure spring 804, so that the first cavity body 201 and the second cavity body 202 are gradually closed until the electricity-taking current transformer section 401 at the lower part of the first cavity body 201, the measuring current transformer section 402 and, The cross section of the lower half iron core 502 of the measuring current transformer is contacted, the first cavity 201 stops displacement under the reaction force of the cross section of the lower half iron core 501 of the taking current transformer at the lower part of the second cavity 202 and the cross section of the lower half iron core 502 of the measuring current transformer, at the moment, the first cavity 201 is contacted with the second cavity 202, the upper half cylinder groove 403 and the lower half cylinder groove 503 form a closed cylinder groove, and the electric wire penetrates through the cylinder groove. At this time, the opening and closing screw 701 is continuously screwed, the power line locking slider 702 continuously moves downward under the screw driving force, and the front and rear ends of the power line locking slider 702 start to contact with the first power line locking caliper 506 and the second power line locking caliper 507. The opening and closing screw 701 is continuously screwed, the power line locking slide block 702 continues to move downwards, the power line locking slide block 702 drives the first power line locking caliper 506 and the second power line locking caliper 507 to be linked, the first power line locking caliper 506 and the second power line locking caliper 507 turn to tilt along the axis of the rotating shaft of the first power line locking caliper 506 and the second power line locking caliper 507, an included angle of a certain angle is gradually formed after the first power line locking caliper 506 and the second power line locking caliper 507 turn to tilt, the included angle and the power line locking slide block 702 form a relatively closed cavity, the included angle of the calipers is gradually reduced along with the downward movement of the power line locking slide block 702 and the rotation of the first power line locking caliper 506 and the second power line locking caliper 507, the closed cavity is gradually tightened, the power lines are gradually clamped and finally firmly clamped in the closed cavity formed by the power line locking slide block 702, the, the vertical movement, the left-right movement or the rotation along the power line can not occur. Because the 380V ~ 110kV power line's diameter is relatively wide on a large scale, corresponds the power line of different line footpaths, and locking slider 702 displacement distance is also different, nevertheless can both lock this device and power line finally for this device can not take place to rotate or sideslip on the power line, ensures that the device can the power line of different line footpaths of self-adaptation.

The auxiliary body device second voltage measuring unit 205 is provided with a grounding cross arm 304, the grounding cross arm 304 is fixed on a telegraph pole through general machine members such as metal hoops and screws, the grounding cross arm 304 is connected with the ground potential of a power line, and the installation position keeps a certain distance from the power line to ensure that an installer meets the insulation distance.

After the main body device clamps the power line and the auxiliary body device is fixed on the telegraph pole, the short circuit ring 303 of the auxiliary body device is pulled and sleeved on the short circuit hook 512 through an insulating operating rod or a live working vehicle, and effective electrical connection between the short circuit ring 303 and the short circuit hook 502 is ensured.

When the first cavity 201 and the second cavity 202 are closed, the first lateral pressing type special-shaped waterproof ring 504, the second lateral pressing type special-shaped waterproof ring 505 and the second shell 302 form four closed cavities, so that the cross section of the current transformer is effectively prevented from rusting in an outdoor environment.

The elastic movable part of the measuring current transformer in the first cavity 201 is positioned on the top of the iron core of the measuring current transformer. When the device is closed by screwing the opening and closing screw 701, after the upper half iron core 402 of the measuring current transformer positioned in the first cavity 201 is contacted with the cross section of the lower half iron core 502 of the measuring current transformer positioned in the second cavity 202, the opening and closing screw 701 is screwed, and at the moment, the elastic movable part at the top of the measuring current transformer ensures that the iron core of the measuring current transformer continuously presses downwards under the action of the first shell 301, so that the upper half iron core 402 of the measuring current transformer and the lower half iron core 502 of the measuring current transformer positioned in the second cavity 202 can be closed to the maximum extent to obtain the best measuring performance; similarly, the top elastic movable part of the current transformer is located at the top of the current transformer core 401, when the closing device of the opening and closing screw 701 is screwed, after the current transformer core 401 located in the first cavity 201 is in contact with the cross section of the current transformer core 501 located in the second cavity 202, the opening and closing screw 701 is screwed, and at the moment, the elastic movable part of the current transformer guarantees continuous downward pressure of the current transformer core 401 under the action force of the first shell 201, so that the current transformer core and the current transformer core 501 located in the second cavity 202 can be closed to the maximum extent, and the best current-taking performance is obtained.

Be provided with the separator on the disconnector 512 on the first voltage measurement unit 204, when voltage measurement mechanism suffered the thunderbolt or other unpredictable's impact, its power frequency fault current continued to increase and surpassed normal threshold value, made the inside production electric arc and the heat energy of disconnector 512, detonated the disconnector rapidly, disconnected voltage measurement route to ensure that this electric wire netting can not be because of the utility model discloses the abnormity of device leads to the electric wire netting to take place ground fault.

After the device is installed on a power line, the power line generates heat due to the load current of the power line, meanwhile, the electronic circuit part continuously releases heat in the operation process of the device, and a completely closed cavity is formed by the waterproof design of the device; the gas in the closed cavity is continuously heated and expanded to form an internal and external air pressure difference, and the air pressure difference can damage the waterproof performance and the electronic circuit of the device for a long time. The waterproof internal and external air pressure balance valve 605 at the bottom of the second cavity 202 can effectively release the air pressure inside the cavity, so that the internal and external air pressure is balanced, and the waterproof performance and the electronic circuit performance of the device are ensured.

The utility model discloses at least, have following advantage:

1. the utility model discloses can realize the continuous measurement of power line voltage and power line current simultaneously, calculate information such as current power line operating power, harmonic through measured voltage and current information in real time for the electric wire netting operation conditions becomes transparent visual and quick fault location.

2. The utility model discloses an electronic type PT forms effective electrical connection with power line voltage and earth, measures the voltage of power line through bleeder circuit, and the voltage measurement value degree of accuracy is high, does not receive the influence of geographical environment and weather.

3. The utility model discloses only use a locking screw, power line locking slider and power line locking calliper linkage that drives the inside power line of device when revolving wrong locking screw realize the quick opening of device, closed and locking power line, fine solution on the market the defect of the device twin-screw of the same kind even three screw rods, effectual cost and the weight that has reduced the device to the reliability of product has been improved.

4. The utility model can be safely, conveniently and quickly completed no matter manually installed or installed by using the insulating operating rod, and the device can be self-adapted to power lines with different diameters when installed; after the power line is closed and locked, the device can be ensured not to rotate and sideslip even under severe weather environments (strong wind, rainstorm, snowstorm, freezing and the like).

5. The locking screw linkage mechanism and the device internal elastic movement mechanism of the utility model can ensure that the current transformer for taking electricity and the current transformer for measuring electricity are well closed; a waterproof mechanism at the section of the current transformer ensures that the current transformer has a good closed space at the section, so that the current transformer cannot rust.

6. The utility model discloses the power line guide structure that the well was equipped with hangs the power line in-process at the device, and the cylinder inslot that the convenient safe device that slides in of power line was equipped with when both can effectively guaranteeing the installation can effectively protect the mutual-inductor cross-section not to receive the dirty invasion in power line surface again.

7. The utility model discloses the power line locking slider that the well was equipped with locks calliper interlock structure with the power line, the power line in the different line footpaths of locking that can the self-adaptation.

8. The utility model discloses overall structure is simpler, and it is more simple and convenient to operate, and occupation space still less.

The above description is only a preferred embodiment of the present invention, and is not intended to limit 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 regarded as the protection scope of the present invention.

Claims

1. The utility model provides a wide area synchronous power sensing device, places the electronic circuit board in the casing in including casing, voltage measurement mechanism with, the casing in be equipped with the cavity, its characterized in that:

2. The wide area synchronous power sensing device of claim 1, wherein: the first voltage measuring unit comprises a first electronic PT, a disconnector and a short-circuit hook, the top of the first electronic PT is installed in the second cavity, an electrical connection point is arranged at the top of the first electronic PT and forms an electrical connection with the power line locking caliper and the electronic circuit board respectively, the bottom of the first electronic PT is connected with the top of the disconnector, the bottom of the disconnector is connected with one end of the short-circuit hook, and the other end of the short-circuit hook is connected with the second voltage measuring unit.

3. The wide area synchronous power sensing device of claim 1, wherein: the second voltage measuring unit comprises a second electronic PT, a short circuit line, a short circuit ring and a grounding cross arm, the short circuit ring is sleeved on the short circuit hook to form an electricity coupler, the short circuit ring is connected with the short circuit line and is arranged in an integrated structure, the bottom of the short circuit line is connected with the second electronic PT, the second electronic PT is fixed with the grounding cross arm through screws, and the grounding cross arm is connected with a wire pole grounding wire.

4. The wide area synchronous power sensing device of claim 1, wherein: the power line locking calipers are composed of first power line locking calipers and second power line locking calipers, the first power line locking calipers and the second power line locking calipers are respectively provided with rake tooth-shaped structures, the rake tooth spaces of the first power line locking calipers and the second power line locking calipers are intersected with each other, and the power line locking calipers are made of metal materials.

5. The wide area synchronous power sensing device of claim 4, wherein: first power line locking calliper and second power line locking calliper be equipped with the pivot, first power line locking calliper passes through calliper clamp plate with second power line locking calliper and installs on the second cavity, first power line locking calliper and second power line locking calliper use self pivot to rotate the setting as the axle center under the exogenic action.

6. The wide area synchronous power sensing device of claim 1, wherein: the current transformer comprises a current transformer and a measuring current transformer, the current transformer comprises an upper current transformer and a lower current transformer, the measuring current transformer comprises an upper measuring current transformer and a lower measuring current transformer, the upper current transformer and the upper measuring current transformer are arranged in a first cavity, an elastic moving part is arranged at the top of the current transformer in the first cavity, the lower current transformer and the lower measuring current transformer are arranged in a second cavity, wherein the iron core of the upper current transformer and the iron core of the upper measuring current transformer are distributed at the left and right sides of the first cavity, the iron core of the lower current transformer and the iron core of the lower measuring current transformer are distributed at the left and right sides of the second cavity, and when the upper shell and the lower shell are closed, the iron core of the current transformer forms a closed end face at the joint of the first cavity and the second cavity.

7. The wide area synchronous power sensing device of claim 6, wherein: a side-pressure type special-shaped waterproof ring is arranged around the end face of the current transformer iron core, and a special-shaped waterproof ring pressing plate is arranged at the upper end of the special-shaped waterproof ring.

8. The wide area synchronous power sensing device of claim 1, wherein: be provided with first power line in-groove limit guide and second power line in-groove limit guide on first cavity and the second cavity respectively, be located current transformer's periphery setting, and still be located the front end setting in first semi-cylinder groove and lower semi-cylinder groove, first power line in-groove limit guide and second power line in-groove limit guide highly be greater than the waterproof circle top height of dysmorphism on the current transformer, be provided with the spacing shelves pole of power line on the second cavity, be located the rear end setting in lower semi-cylinder groove to be higher than the top height setting in power line in-groove limit guide.

9. The wide area synchronous power sensing device of claim 1, wherein: the opening and closing screw comprises a locking screw, a damping disc, a steel ball, a damping spring, a clutch lever, a damping nut, a locking pin and a hanging ring, the top of the locking screw is provided with an external thread which is in screwed connection with an internal thread arranged on the power line locking slide block, the bottom of the locking screw is provided with an internal thread which is in screwed connection with an external thread arranged on the outer side of the damping nut, the lower half structure of the locking screw is provided with a clutch cavity, the damping disc, the steel balls, the damping spring, the clutch rod and the damping nut are mutually matched to form a clutch component which is arranged in a clutch cavity of the lower half structure of the locking screw rod, the bottom of the clutch rod is connected with the hanging ring, the clutch rod is fixed through a locking pin, the locking pin penetrates through the clutch rod and the hanging ring in the direction perpendicular to the opening and closing screw rod, semicircular steel ball grooves are formed in the bottom of the damping disc and the top of the clutch rod respectively, steel balls are arranged in a circular groove formed by the damping disc and the clutch rod, and the damping spring is sleeved on the clutch rod.

10. The wide area synchronous power sensing device of claim 1, wherein: the lower end face of the second cavity is provided with a radiating fin, an LED lampshade and an inner and outer air pressure balance valve, and a waterproof sealing ring is arranged between the radiating fin, the LED lampshade, the inner and outer air pressure balance valve and the lower end face of the second cavity.