System for measuring operation state of capacitive equipment of transformer substation

Abstract

The utility model relates to the technical field of electric power equipment state detection and fault diagnosis research and application, and discloses a transformer station capacitance type equipment operation state measuring system comprising a measuring clamp meter, the top end of the measuring clamp meter is provided with a measuring head, one side of the top end of the measuring head is provided with a locking buckle, and the locking buckle comprises a clamping frame. And one side of the inner wall of the clamping frame is fixedly connected with a measuring head. According to the utility model, the measuring head part of the measuring clamp meter is improved, and the locking buckle is carried and positioned in an opening and closing butt joint manner during sliding, so that the stability of the measuring head of the measuring clamp meter in the process of measuring the wiring clamp is improved, and the falling-off condition is reduced, thereby improving the stability of the whole measuring system in the process of measuring capacitance equipment, and improving the measuring accuracy of the capacitance equipment. Therefore, the whole measuring instrument can be firmly arranged and locked on the measuring wiring, the loosening and separating phenomena caused by long-term clamping can be reduced, and the stability of the whole system in the wiring measurement process of the capacitance equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment state detection and fault diagnosis research and application, in particular to a measurement system for the operating state of capacitor type equipment in a transformer substation. Background Art

[0002] Capacitive equipment is equipment that uses a capacitive screen insulation structure, mainly including current transformers (CT), bushings, coupling capacitors, capacitive voltage transformers (CVT), etc. Its scale in the substation can usually reach half of the total number of primary substation equipment in the entire station. The insulation failure of capacitor equipment not only affects the safe operation of the entire substation; it may even cause immeasurable power grid safety accidents, thereby affecting the power supply reliability and the safe and stable operation of the main power grid equipment. At present, the main means of measuring and judging the status of capacitor equipment in operation is still mainly preventive testing. The reactive compensation capacitance value of capacitor equipment is regularly measured based on the technical specifications for the operation of reactive compensation capacitors and filter capacitors. This type of measurement plays an important role in ensuring the safe, healthy and economical operation of the power grid.

[0003] Prior art, such as the patent with publication number CN205229325U, discloses a measurement system for the operating status of substation capacitance-type equipment, including a handheld measuring clamp meter and a measuring system host, wherein a first carrier frequency adaptive wireless communication antenna provided in the handheld measuring clamp meter is connected to a second carrier frequency adaptive wireless communication antenna provided in the measuring system host through wireless communication. The utility model has a simple structure, convenient mobility, and accurate measurement, and has gotten rid of the constraints of the traditional measuring system that requires wire removal and wiring for measurement, enriches the detection means, improves the detection efficiency, and promotes the leapfrog development of capacitance value measurement technology. At the same time, the aligned high-precision atomic clock is used as a time scale, thereby realizing cable-free synchronization of the test voltage and the current measured by the clamp meter.

[0004] The above prior art has obvious beneficial effects, but still has shortcomings:

[0005] In the above-mentioned prior art, a handheld measuring clamp meter and a measuring system host are combined and connected by wireless communication, which simplifies the wiring measurement connection method. The handheld measuring clamp meter monitors the current transformer in the clamp head part during measurement. The ordinary clamp head only relies on the elastic structure of the clamp meter itself to lock, thereby maintaining the measurement of the internal wiring. If the clamp head part is stressed or accidentally disconnected, it is easy to cause the clamp meter part to be out of the monitoring range, thereby affecting the measurement process and stability. For this reason, a measurement system for the operating status of substation capacitor-type equipment is proposed. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a measurement system for the operating status of capacitor-type equipment in a substation. By improving the measuring head part of the measuring clamp meter, a locking buckle is provided to position the measuring head in an opening and closing docking manner during sliding, so as to improve the stability of the measuring head of the measuring clamp meter during the measurement process of the docking wire clamp and reduce the possibility of falling off, thereby improving the stability of the overall measurement system during the measurement of the capacitor equipment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a measurement system for the operating status of a capacitor-type equipment in a substation, comprising a measuring clamp meter, a measuring head is arranged at the top of the measuring clamp meter, and a locking buckle is arranged on one side of the top of the measuring head, the locking buckle comprises a card frame, and the measuring head is fixedly connected to one side of the inner wall of the card frame, a docking groove is arranged on the other side of the inner wall of the card frame, and inner buckles are connected to the inner walls on both sides of the docking groove, a top buckle is arranged at the top of the inner wall of the docking groove, and a buckle rod is fixedly connected to one end of the top buckle, a rotary buckle is connected to the bottom of the other end of the buckle rod, and a spring is connected to the bottom of the other end of the buckle rod.

[0008] Preferably, the bracket is fixedly connected to one side of the measuring head, and the bracket is buckled with the other side of the measuring head by buckling the inner walls on both sides.

[0009] Preferably, the buckle rod and the card frame form a rotating structure through a rotary buckle, and the spring is connected to one side of the bottom end of the buckle rod and the card frame.

[0010] Preferably, the measuring clamp meter includes an ammeter, a measuring head is connected to the top of the ammeter, a knob is provided on the top surface of the ammeter, a display screen is provided at the bottom of the knob, a wiring port is provided at the bottom of the display screen, and anti-slip glue is distributed on both sides of the ammeter.

[0011] Preferably, the ammeter is connected to the knob and the display screen, and the anti-slip glue is symmetrically distributed along the outer walls on both sides of the ammeter.

[0012] Preferably, the measuring head includes a clamp frame, and the bottom end of the clamp frame is fixedly connected to the top of the measuring clamp, and the outer wall of the other end of the clamp frame is fixedly connected to a clamp frame, the other end of the clamp frame is fitted with a clamp head, and a slide rod frame is connected to one side of the bottom end of the clamp head, one end of the slide rod frame is fixedly connected to a button, and a spring groove is opened inside the slide rod frame, one side of the inner wall of the spring groove is connected to a structural frame, and both ends of the structural frame are fixedly connected to the inner wall of the top of the measuring clamp.

[0013] Preferably, the slide rod frame forms an elastic sliding structure with the measuring clamp meter through the spring groove and the structural frame, and the slide rod frame is fixedly connected to the button and the clamp head.

[0014] Preferably, the measuring module comprises a measuring clamp meter for measuring the wiring clamp and a wireless communication antenna for sending a measuring signal, and the host module comprises a wireless communication antenna for receiving the measuring signal and a parallel-connected capacitor array to be measured;

[0015] The above-mentioned measured capacitor array is used to measure the AC steady voltage of the host module to both ends of the parallel measured capacitor array when the connected measuring clamp meter is wirelessly controlled, and the test voltage phasor is collected and saved with the synchronization source as the time reference.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model improves the measuring head of the measuring clamp meter, and carries a locking buckle for positioning in an opening and closing docking mode when sliding, thereby improving the stability of the measuring head of the measuring clamp meter during the measurement process of the docking wire clamp, reducing the possibility of falling off, thereby improving the stability of the overall measuring system during the measurement of the capacitance device, thereby keeping the overall measuring instrument firmly locked to the measurement wiring, reducing the loosening and detachment caused by long-term clamping, and improving the stability of the overall system during the measurement of the capacitance device wiring.

[0018] 2. Use the knobs and wiring ports on the surface of the ammeter to adjust and connect, and use the display screen to keep an eye on the measurement process. The anti-slip rubber design on both sides of the ammeter can improve the anti-slip stability during the holding operation and increase the safety of the system during installation.

[0019] 3. The clamp head connected to one end of the slide frame leaves one end of the clamp frame to form a gap, and the wiring to be measured is placed inside the clamp frame. Then release the button to allow the slide frame to rebound and slide with the internal spring groove, so that the clamp head is re-engaged with one end of the clamp frame, clamping the wiring in place, thereby performing a stable measurement process.

[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the measuring clamp meter of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the measuring head of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the locking buckle of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the locking buckle of the utility model from a side view;

[0025] Figure 5 This is a schematic diagram of the layout of the capacitance type equipment operating status measurement system of the utility model.

[0026] In the figure: 1. measuring clamp; 101. ammeter; 102. knob; 103. display screen; 104. wiring port; 105. anti-slip glue; 2. measuring head; 201. clamp frame; 202. clamp head; 203. slide bar frame; 204. button; 205. spring slot; 206. structural frame; 3. locking buckle; 301. clamp frame; 302. docking slot; 303. inner buckle; 304. top buckle; 305. buckle rod; 306. rotary buckle; 307. spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 A measuring system for the operating status of a capacitor-type device in a substation according to the present embodiment includes a measuring clamp meter 1, a measuring head 2 is provided at the top of the measuring clamp meter 1, and a locking buckle 3 is provided on one side of the top of the measuring head 2. The measuring clamp meter 1 includes an ammeter 101, the top of the ammeter 101 is connected to the measuring head 2, and a knob 102 is provided on the top surface of the ammeter 101, a display screen 103 is provided at the bottom of the knob 102, and a wiring port 104 is provided at the bottom of the display screen 103, and anti-slip glue 105 is distributed on both sides of the ammeter 101.

[0029] like Figure 1-5As shown, the capacitance type equipment operation status measurement system in the utility model is similar in structure to the existing capacitance type equipment operation status measurement system, such as a capacitance type equipment operation status measurement system of a substation with publication number CN205229325U. The main improvement of the utility model is that by improving the measuring head 2 part of the measuring clamp meter 1, the locking buckle 3 is positioned in an opening and closing docking manner when sliding, so as to improve the stability of the measuring head 2 of the measuring clamp meter 1 during the measurement process of the docking wire clamp, reduce the falling situation, and thus improve the stability of the overall measurement system during the measurement of the capacitance device; the measuring clamp meter 1 and the measuring host module in the utility model are both prior art. When using this measurement system to measure the operation status of the capacitance device, the knob 102 and the wiring port 104 on the surface of the ammeter 101 can be used for regulation and wiring, and the display screen 103 can be used to keep the observation of the measurement installation process. The anti-slip glue 105 design on both sides of the ammeter 101 can improve the anti-slip stability during the holding operation and increase the safety of the system installation process.

[0030] like Figure 1-2 As shown, the measuring head 2 includes a clamp frame 201, and the bottom end of the clamp frame 201 is fixedly connected to the top of the measuring clamp meter 1, and the outer wall of the other end of the clamp frame 201 is fixedly connected to a clamp frame 301, the other end of the clamp frame 201 is fitted with a clamp head 202, and the bottom end of the clamp head 202 is connected to a slide bar frame 203, one end of the slide bar frame 203 is fixedly connected to a button 204, and a spring groove 205 is opened inside the slide bar frame 203, one side of the inner wall of the spring groove 205 is connected to a structure frame 206, and both ends of the structure frame 206 are fixedly connected to the inner wall of the top of the measuring clamp meter 1, When measuring the measuring wire, the user can hold the ammeter 101, then unlock the locking buckle 3, press the button 204 to drive the slide frame 203 to slide along the top side of the ammeter 101, and let the clamp head 202 connected to one end of the slide frame 203 partially leave one end of the clamp frame 201 to form a gap, and place the wire to be measured into the clamp frame 201, and then release the button 204 to let the slide frame 203 cooperate with the internal spring groove 205 to rebound and slide, so that the clamp head 202 is re-engaged with one end of the clamp frame 201, clamping the wire in place, thereby performing a stable measurement process.

[0031] like Figure 2-4As shown, the locking buckle 3 includes a bracket 301, and a measuring head 2 is fixedly connected to one side of the inner wall of the bracket 301, a docking groove 302 is provided on the other side of the inner wall of the bracket 301, and inner buckles 303 are connected to the inner walls of both sides of the docking groove 302, a top buckle 304 is provided on the top of the inner wall of the docking groove 302, and a buckle rod 305 is fixedly connected to one end of the top buckle 304, a rotary buckle 306 is connected to the bottom of the buckle rod 305, and a spring 307 is connected to the bottom of the other end of the buckle rod 305. When the clamp head 202 is re-engaged with one end of the clamp frame 201, one end of the clamp head 202 is placed in the inner wall of the docking groove 302 of the bracket 301, and the inner wall of the docking groove 302 is connected to the inner wall of the docking groove 302. The inner buckles 303 on both sides are buckled with the two sides of one end of the clamp head 202, and the top buckle 304 at the top of the docking groove 302 is synchronously buckled with the top of one end of the clamp head 202, so as to keep the overall measuring instrument firmly locked on the measuring wiring, reduce the loosening and detachment caused by long-term clamping, thereby improving the stability of the overall system during the measurement of the capacitance equipment wiring, and when detachment is required, it is only necessary to press one end of the buckle rod 305 to open the top buckle 304 at the other end of the buckle rod 305 through the rotary buckle 306 structure, and loosen the buckle on the clamp head 202. After the detachment is completed, the buckle rod 305 is released to reset it through the spring 307, which is convenient to operate.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A system for measuring the operating status of a capacitor type device in a substation, comprising a measuring clamp meter (1), characterized in that: A measuring head (2) is arranged at the top of the measuring clamp meter (1), and a locking buckle (3) is arranged at one side of the top of the measuring head (2); the locking buckle (3) comprises a clamp frame (301), and the measuring head (2) is fixedly connected to one side of the inner wall of the clamp frame (301); a docking groove (302) is arranged at the other side of the inner wall of the clamp frame (301), and inner buckles (303) are connected to the inner walls of both sides of the docking groove (302); a top buckle (304) is arranged at the top of the inner wall of the docking groove (302), and a buckle rod (305) is fixedly connected to one end of the top buckle (304); a rotary buckle (306) is connected to the bottom end of the buckle rod (305), and a spring (307) is connected to the bottom of the other end of the buckle rod (305).

2. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 1, characterized in that: The bracket (301) is fixedly connected to one side of the measuring head (2), and the bracket (301) is buckled with the other side of the measuring head (2) through the inner buckles (303) of the inner walls on both sides.

3. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 1, characterized in that: The buckle rod (305) forms a rotating structure with the clamping frame (301) through a rotating buckle (306), and the spring (307) is connected to one side of the bottom end of the buckle rod (305) and the clamping frame (301).

4. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 1, characterized in that: The measuring clamp meter (1) comprises an ammeter (101), the top of the ammeter (101) is connected to a measuring head (2), the top surface of the ammeter (101) is provided with a knob (102), the bottom of the knob (102) is provided with a display screen (103), the bottom of the display screen (103) is provided with a wiring port (104), and anti-slip glue (105) is distributed on both sides of the ammeter (101).

5. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 4, characterized in that: The ammeter (101) is connected to the knob (102) and the display screen (103), and the anti-slip glue (105) is symmetrically distributed along the outer walls on both sides of the ammeter (101).

6. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 1, characterized in that: The measuring head (2) comprises a clamp frame (201), and the bottom end of the clamp frame (201) is fixedly connected to the top end of the measuring clamp meter (1), and the outer wall of the other end of the clamp frame (201) is fixedly connected to a clamp frame (301), the other end of the clamp frame (201) is fitted with a clamp head (202), and the bottom end of the clamp head (202) is connected to a slide bar frame (203), one end of the slide bar frame (203) is fixedly connected to a button (204), and a spring groove (205) is provided inside the slide bar frame (203), one side of the inner wall of the spring groove (205) is connected to a structural frame (206), and both ends of the structural frame (206) are fixedly connected to the inner wall of the top end of the measuring clamp meter (1).

7. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 6, characterized in that: The slide bar frame (203) forms an elastic sliding structure with the measuring clamp meter (1) through the spring groove (205) and the structural frame (206), and the slide bar frame (203) is fixedly connected to the button (204) and the clamp head (202).

8. A system for measuring the operating status of a capacitor type equipment in a substation according to claim 1 or 4, characterized in that: The measuring system comprises a measuring module and a host module, wherein the measuring module is used for a measuring clamp meter (1) for measuring the wiring clamp and a wireless communication antenna for sending a measuring signal, and the host module comprises a wireless communication antenna for receiving the measuring signal and a parallel-connected capacitance array to be measured; The above-mentioned capacitor array under test is used to measure the AC steady voltage of the host module to the two ends of the capacitor array under test in parallel when the connected measuring clamp meter (1) is wirelessly controlled, and the test voltage phasor is collected and stored with the synchronization source as the time reference.

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