阅读说明：本技术 一种广域同步功率传感装置 (Wide-area synchronous power sensing device ) 是由 倪贵成 朱志明 傅岳林 罗治军 于 2019-12-19 设计创作，主要内容包括：本发明涉及一种广域同步功率传感装置,本装置分为主体装置和辅体装置,含有第一腔体、第二腔体、开合螺杆机构、第一电压测量单元等部件为主体装置,含有第二电压测量单元为辅体装置,安装前主体装置和辅体装置为分离状态。本发明该广域同步功率传感装置与大地形成物理的接地点,使用电压分压原理测量线路电压,使用电流互感器原理测量线路电流,能够同时监测线路电压和线路电流并实现功率测量,测量准确性高、成本低和重量轻,安装拆卸方便,且可靠性高。(The invention relates to a wide-area synchronous power sensing device which is divided into a main body device and an auxiliary body device. The wide area synchronous power sensing device and the ground form a physical grounding point, the line voltage is measured by using a voltage division principle, the line current is measured by using a current transformer principle, the line voltage and the line current can be simultaneously monitored, the power measurement is realized, the measurement accuracy is high, the cost is low, the weight is light, the installation and the disassembly are convenient, and the reliability is high.)

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:

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.

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 1, 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.

Technical Field

The invention 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.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a wide area synchronous power sensing device, which forms a physical ground point with the ground, measures line voltage using a voltage division principle, measures line current using a current transformer principle, can simultaneously monitor line voltage and line current and realize power measurement, and has high measurement accuracy, low cost, light weight, convenient installation and disassembly, and high reliability.

In order to achieve the purpose, the invention 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. By the scheme, the invention at least has the following advantages:

1. the device forms a physical grounding point with the ground, measures the line voltage by using a voltage division principle, measures the current by using a current transformer principle, can simultaneously monitor the line voltage and the line current, calculates the information of line running power, harmonic waves and the like, has high measurement accuracy, and can be installed and detached in a charged manner through the insulating operating rod.

2. According to the invention, only one locking screw is used, and when the locking screw is screwed, a power line locking slide block in the device is driven to be linked with the power line locking caliper to realize quick opening, closing and locking of the device, so that the defects of double screws and even three screws of the same type of devices on the market are well overcome, the cost and the weight of the device are effectively reduced, and the reliability of the product is improved.

3. The invention can be safely, conveniently and quickly finished no matter manually installed or installed by using the insulating operating rod, and the device can be self-adaptive 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. According to the locking screw linkage mechanism and the device, the power-taking current transformer and the measuring current transformer can be closed well by the internal elastic movement mechanism; 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 power line guide structure arranged on the device can effectively ensure that the power line conveniently and safely slides into the cylindrical groove arranged on the device during installation and can effectively protect the cross section of the mutual inductor from being invaded by dirt on the surface of the power line when the device is used for hanging the power line.

6. The device is provided with a power line locking slide block and a power line locking caliper linkage structure, namely, power lines with different wire diameters can be locked in a self-adaptive mode.

7. The invention has simpler integral structure, simpler and more convenient operation and less occupied space.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 the 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 measurement unit of the wide area synchronous power sensor device of the present invention;

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

FIG. 4 is a schematic diagram of a 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 chamber 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 device according to the present invention;

fig. 9 is a schematic view of an opening and closing screw structure of a wide area synchronous power sensing device according to the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with 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 solutions of the present invention better understood, the technical solutions 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 a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention 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 figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.