Traveling wave integrator and power system

Abstract

The utility model relates to a traveling wave integrator and a power system. The traveling wave integrator comprises an integral circuit board and a shielding cover, the integral circuit board is provided with an integral circuit and an interface; the shielding cover covers the integrating circuit and enables the interface to be exposed, the shielding cover comprises a first cover shell and a second cover shell which are located on the two opposite sides of the integrating circuit board, the first cover shell is provided with a plug-in protrusion, the second cover shell is provided with a plug-in groove, and the plug-in protrusion penetrates through the integrating circuit board and is plugged in the plug-in groove. According to the traveling wave integrator and the power system, electromagnetic shielding protection can be performed on the integrating circuit by using the shielding cover, interference of an external antenna and a wireless communication module on the integrating circuit can be reduced, the reliability of the integrating circuit can be ensured, an interface of the integrating circuit board can be exposed, and normal input and output of signals can be ensured; the shielding case is simple in structure and convenient to use, the integration requirement of power equipment is not affected, the shielding case can be installed more flexibly, and the first case body and the second case body can be rapidly assembled through matching of the inserting protrusions and the inserting grooves.

Description

Technical Field

[0001] This application relates to the field of power system technology, and in particular to a traveling wave integrator and a power system. Background Technology

[0002] The traveling wave integrator is a core component of a power system traveling wave fault location and monitoring system. Its functions include receiving transient signals from high-frequency traveling wave sensors (such as wideband Rogowski coils), integrating the signals in the time domain to extract energy accumulation characteristics, and optimizing the signal-to-noise ratio by suppressing high-frequency noise. The integrated signal is then sent to a digital processing module via an analog-to-digital converter (ADC) to calculate the traveling wave arrival time difference and fault location.

[0003] However, with the trend of power equipment integration and intelligence, the mutual interference between antennas and wireless communication modules and integrator circuits is becoming more and more obvious, which can easily lead to signal distortion or false triggering. Utility Model Content

[0004] Therefore, it is necessary to provide a traveling wave integrator and power system to address the above problems.

[0005] A traveling wave integrator, comprising:

[0006] An integrating circuit board, comprising an integrating circuit and an interface; and

[0007] A shielding cover is provided on the outside of the integrating circuit and exposes the interface. The shielding cover includes a first cover and a second cover located on opposite sides of the integrating circuit board. The first cover has a plug-in protrusion, and the second cover has a plug-in groove. The plug-in protrusion passes through the integrating circuit board and is plugged into the plug-in groove.

[0008] In one embodiment, the first cover and the integrating circuit are located on the same side of the integrating circuit board. The first cover includes a first cover plate and a first flange. The first cover plate faces the integrating circuit. The first flange is disposed on the edge of the first cover plate and extends toward the second cover. The first flange surrounds the outer periphery of the integrating circuit and is provided with the plug-in protrusion.

[0009] The second cover includes a second cover plate, which is located on opposite sides of the integration circuit board, and the second cover plate is provided with the insertion slot.

[0010] In one embodiment, the second cover plate has a connecting ear plate protruding from its side in the width direction and / or length direction, and the insertion groove is provided on the connecting ear plate.

[0011] In one embodiment, the second cover further includes a detachable second flange, which is disposed on two sides in the length or width direction of the second cover, and extends toward the first cover and is located to the side of the corresponding first flange.

[0012] In one embodiment, the second cover has a slide rail on its side in the length or width direction. The slide rail faces the first cover and has a groove. The second side can slide into the groove from the opening of the corresponding groove in the length or width direction of the second cover and be interference-fitted with the groove.

[0013] In one embodiment, the first flange includes two first flange portions and two second flange portions. One of the first flange portions and the second flange portions are respectively disposed on the side of the first cover in the width direction, and the other is respectively disposed on the side of the first cover in the length direction. The first flange portion is provided with the insertion protrusion, and the second flange portion is hinged to the first cover plate and can rotate toward the integrating circuit by its own gravity.

[0014] In one embodiment, the end of the insertion protrusion near the second housing is chamfered.

[0015] In one embodiment, the first cover has symmetrically provided insertion protrusions at both ends in the width or length direction, and the second cover has symmetrically provided insertion grooves at both ends in the width or length direction.

[0016] An electrical system includes a housing, a traveling wave sensor, and a traveling wave integrator as described in any of the preceding claims, wherein the traveling wave sensor and the traveling wave integrator are both disposed within the housing.

[0017] In one embodiment, one end of the shield of the traveling wave integrator is grounded to the housing; and / or, the integrating circuit board of the traveling wave integrator is fixedly connected to the housing.

[0018] The aforementioned traveling wave integrator and power system, by covering the integrating circuit on the integrating circuit board with a shield, can provide electromagnetic shielding protection for the integrating circuit, reduce interference from external antennas and wireless communication modules, thereby ensuring the reliability of the integrating circuit. It also allows the interface of the integrating circuit board to be exposed, ensuring normal signal input and output. Furthermore, by setting the shield to include a first cover and a second cover, it does not affect the integration requirements of the power equipment and also makes the installation of the shield more flexible. The first cover and the second cover can be quickly assembled by the cooperation of the plug-in protrusion and the plug-in slot. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the traveling wave integrator provided in an embodiment of this application, viewed from a first angle.

[0020] Figure 2 This is a schematic diagram of the traveling wave integrator provided in an embodiment of this application, viewed from a second angle.

[0021] Figure 3 This is a schematic diagram of the traveling wave integrator provided in an embodiment of this application, viewed from a third angle.

[0022] Figure 4 This is an exploded view of a traveling wave integrator provided in one embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the structure of the first housing of a traveling wave integrator provided in an embodiment of this application.

[0024] Figure 6 This is a structural schematic diagram of the second cover plate of the second housing provided in an embodiment of this application, viewed from a first angle.

[0025] Figure 7 This is a structural schematic diagram of the second cover plate of the second housing provided in an embodiment of this application, viewed from a second angle.

[0026] The labels in the attached diagram are explained as follows:

[0027] 10. Traveling wave integrator; 100. Integrating circuit board; 110. Integrating circuit; 120. Interface; 130. Mounting hole; 140. Through hole; 200. Shielding cover; 210. First cover; 211. Insertion protrusion; 212. First cover plate; 213. First flange; 2131. First flange portion; 2132. Second flange portion; 220. Second cover; 221. Insertion slot; 222. Second cover plate; 223. Connecting ear plate; 224. Second flange; 225. Slide rail; 2251. Slide groove. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] like Figures 1 to 4 As shown, one embodiment of this application provides a traveling wave integrator 10, which includes an integrating circuit board 100 and a shield 200. The integrating circuit board 100 has an integrating circuit 110 and an interface 120. The shield 200 covers the outside of the integrating circuit 110 and exposes the interface 120. The shield 200 includes a first cover 210 and a second cover 220 located on opposite sides of the integrating circuit board 100. The first cover 210 is provided with a plug-in protrusion 211, and the second cover 220 is provided with a plug-in groove 221. The plug-in protrusion 211 passes through the integrating circuit board 100 and is plugged into the plug-in groove 221.

[0035] The traveling wave integrator 10 can be applied to power systems. Its core function is to process transient high-frequency signals captured by traveling wave sensors (such as high-frequency current transformers) and extract key features to support fault analysis. It can work in conjunction with traveling wave sensors to achieve high-precision fault detection and location of power equipment.

[0036] The integrating circuit 110 of the integrating circuit board 100 serves as its core circuit and can perform integration calculations based on an operational amplifier (OPAMP) or a digital integration algorithm. During operation, the integrating circuit 110 is typically subject to interference from external antennas and wireless communication modules, leading to reduced reliability. To address this, this application provides electromagnetic shielding protection for the integrating circuit 110 by enclosing it with a shielding cover 200, reducing interference from external antennas and wireless communication modules and thus ensuring the reliability of the integrating circuit 110.

[0037] In order not to affect the integration of power equipment, this application sets the shielding cover 200 as a split structure, that is, the shielding cover 200 is set as including a first cover 210 and a second cover 220. The first cover 210 and the second cover 220 can be stacked and assembled on opposite sides of the integrating circuit board 100. This allows the shielding cover 200 to be tightly wrapped around the integrating circuit 110 without occupying too much space to achieve electromagnetic shielding of the integrating circuit 110, and also makes the installation of the shielding cover 200 more flexible.

[0038] Furthermore, this application provides a plugging protrusion 211 on the first cover 210 and a plugging groove 221 on the second cover 220. During assembly, the plugging protrusion 211 of the first cover 210 can be inserted into the plugging groove 221 first. The engagement of the plugging protrusion 211 and the plugging groove 221 can be used to position the first cover 210 and the second cover 220. Then, welding, bonding, or other methods can be used to fix the plugging protrusion 211 to the groove wall of the plugging groove 221, thus completing the assembly of the first cover 210 and the second cover 220. Therefore, this application facilitates the assembly of the first cover 210 and the second cover 220 by providing a plugging protrusion 211 on the first cover 210 and a plugging groove 221 on the second cover 220.

[0039] In addition, considering that the integrating circuit board 100 is usually equipped with an interface 120 (such as a signal input interface, a signal output interface, etc.) to realize signal input, output and system interconnection, in order not to affect the signal transmission, the shield 200 of this application is not covered outside the interface 120, but the interface 120 is exposed so that the interface 120 can transmit signals normally.

[0040] In summary, the traveling wave integrator 10 provided in this application, by covering the integrating circuit 110 of the integrating circuit board 100 with a shielding cover 200, can provide electromagnetic shielding protection for the integrating circuit 110, reduce interference from external antennas and wireless communication modules, thereby ensuring the reliability of the integrating circuit 110, and also expose the interface 120 of the integrating circuit board 100 to ensure normal signal input and output; moreover, by setting the shielding cover 200 to include a first cover 210 and a second cover 220, it does not affect the integration requirements of power equipment, and also makes the installation of the shielding cover 200 more flexible. The first cover 210 and the second cover 220 can be quickly assembled by the cooperation of the plug-in protrusion 211 and the plug-in slot 221.

[0041] In some embodiments of this application, the first cover 210 and the second cover 220 can be made of metal, such as copper or silver. Metal not only has excellent electromagnetic shielding performance, but can also dissipate heat from the integrating circuit 110, which can further ensure the reliability of the integrating circuit 110.

[0042] In some embodiments of this application, such as Figure 4As shown, the first cover 210 and the integrating circuit 110 are located on the same side of the integrating circuit board 100. The first cover 210 includes a first cover plate 212 and a first flange 213. The first cover plate 212 faces the integrating circuit 110, and the first flange 213 is located on the edge of the first cover plate 212 and extends toward the second cover 220. The first flange 213 surrounds the outer periphery of the integrating circuit 110 and is provided with a plug-in protrusion 211. The second cover 220 includes a second cover plate 222, which is located on opposite sides of the integrating circuit board 100 as the first cover plate 212. The second cover plate 222 is provided with a plug-in groove 221. By setting the structure of the first cover 210 and the second cover 220 in this way, the shielding cover 200 can effectively provide electromagnetic shielding for the integrating circuit 110 of the integrating circuit board 100, and the structure of the shielding cover 200 can also be simplified.

[0043] The length of the first flange 213 extending toward the second cover 220 is adapted to the thickness of the integrating circuit 110. Specifically, the length of the first flange 213 extending toward the second cover 220 is equal to or slightly greater than the thickness of the integrating circuit 110. This arrangement limits the shielding cover 200 in the thickness direction of the integrating circuit board 100, preventing the shielding cover 200 from shaking. It should be noted here that... Figure 4 As shown, the integrating circuit board 100 has a through hole 140 for the insertion protrusion 211 to pass through. This through hole 140 can limit the shielding cover 200 in the length and width directions of the integrating circuit board 100, preventing the shielding cover 200 from shaking. Throughout this text, "length direction," "width direction," and "thickness direction" are used in conjunction with... Figure 1 The information shown shall prevail.

[0044] See Figure 5 The first flange 213 includes two first flange portions 2131 and two second flange portions 2132. The first flange portions 2131 are correspondingly disposed on the side of the first cover 210 in the width direction, and the second flange portions 2132 are correspondingly disposed on the side of the first cover 210 in the length direction. A gap exists between the first flange portions 2131 and the adjacent second flange portions 2132. During processing, due to the existence of the gap, the first flange 213 can be formed by bending the edge of the first cover plate 212, facilitating the processing and preparation of the shielding shell.

[0045] The first flange 2131 has a plug-in protrusion 211, and the second flange 2132 is hinged to the first cover plate 212 and can rotate towards the integrating circuit 110 under its own weight. When wiring or other operations are required inside the shielding cover 200, the first flange 2131 of the first flange 213 is rotated outward to open it; after wiring or other operations are completed, the first flange 2131 of the first flange 213 is rotated inward until it is in contact with the integrating circuit 110. As an example, if the first cover 210 is located above the second cover 220, the first flange 2131 can close naturally due to its own weight.

[0046] In some other embodiments, the first flange portion 2131 may also be provided on the side of the first cover 210 in the length direction, and the second flange portion 2132 may also be provided on the side of the first cover 210 in the width direction.

[0047] See Figure 4 The second cover plate 222 has a connecting ear plate 223 protruding from its width side, and a insertion groove 221 is provided on the connecting ear plate 223. Providing the insertion groove 221 on the connecting ear plate 223 can reduce the weight of the shielding cover 200, and can also be used to pre-position the second cover 220, facilitating the alignment of the insertion groove 221 with the insertion protrusion 211, thus accelerating the assembly process of the first cover 210 and the second cover 220. Of course, in some other embodiments, the second cover plate 222 may also have a connecting ear plate 223 protruding from its length side; or, the second cover plate 222 may have a connecting ear plate 223 protruding from both its width and length sides.

[0048] The connecting ear plate 223 can be integrated with the second cover plate 222 to ensure the connection strength between the two.

[0049] See also Figure 4 The second cover 220 also includes a detachable second flange 224. The second flange 224 is located on two sides in the length or width direction of the second cover 220, extending toward the first cover plate 212 and located to the side of the first flange 213. By providing the second flange 224 on the second cover 220, the second cover 220 can be pre-positioned, facilitating the adjustment of the relative position between the two covers 220 and speeding up the assembly process of the first cover 210 and the second cover 220. In addition, by making the second flange 224 a detachable structure, when performing operations such as wiring inside the shielding cover 200, the second flange 224 can be opened to facilitate such operations.

[0050] In one embodiment, such as Figure 6 and Figure 7As shown, the second cover 220 has a slide rail 225 on its side in the length or width direction. The slide rail 225 faces the first cover 210 and has a groove 2251. The second flange 224 can slide into the groove 2251 from the opening of the corresponding groove 2251 along the length or width direction of the second cover 220 and be interference-fitted with the groove 2251. When wiring or other operations are required inside the shielding cover 200, the second flange 224 is pulled out of the slide groove 2251 along the length or width direction of the second cover 220, and then the first flange portion 2131 of the first flange 213 is rotated outward. After wiring or other operations are completed, the first flange portion 2131 of the first flange 213 is rotated inward first, and then the second flange 224 is slid into the slide groove 2251 from the opening of the slide groove 2251 along the length or width direction of the second cover 220. After the second flange 224 slides into place, it is fixed by the interference fit with the slide groove 2251. With the above settings, the second flange 224 can be installed and removed, and the structure of the shielding cover 200 is simplified.

[0051] When the integrating circuit 110 and the interface 120 are as follows Figure 4 As shown, when the integrating circuit board 110 and the interface 120 are spaced apart along the length direction of the integrating circuit board 100, the second flange 224 is located on the two sides of the second cover 220 along the length direction. At this time, the connecting ear plate 223 is located on the side of the second cover plate 222 along the width direction. When the integrating circuit 110 and the interface 120 are spaced apart along the width direction of the integrating circuit board 100, the second flange 224 is located on the two sides of the second cover 220 along the width direction. At this time, the connecting ear plate 223 is located on the side of the second cover plate 222 along the length direction.

[0052] As described above, the integrating circuit 110 and the interface 120 are typically spaced apart along the length or width of the integrating circuit board 100. To meet the integration requirements of power equipment, when the integrating circuit 110 and the interface 120 are typically arranged along the length of the integrating circuit board 100, the integrating circuit 110 is adjacent to the edge of the integrating circuit board 100 along its length. In this case, to allow the insertion protrusion 211 of the first housing 210 to pass through the integrating circuit board 100 and insert into the insertion slot 221 of the second housing 220, the insertion protrusion 211 needs to be located at the end of the first housing 210 in the width direction. Specifically, considering the secure assembly of the first housing 210 and the second housing 220, the two ends of the first housing 210 in the width direction are symmetrically provided with insertion protrusions 211, and the two ends of the second housing 220 in the width direction are symmetrically provided with insertion slots 221. The number and position of the insertion protrusions 211 at each end can be set according to requirements. For example, two insertion protrusions 211 can be set in the middle area of ​​the end of the first cover 210. The number and position of the insertion slots 221 at each end are the same as those of the insertion protrusions 211.

[0053] When the integrating circuit 110 and the interface 120 are typically arranged along the length of the integrating circuit board 100, the integrating circuit 110 is adjacent to the edge of the integrating circuit board 100 along its length. In this case, the insertion protrusion 211 needs to be provided on the end of the first cover 210 along its length. Specifically, the two ends of the first cover 210 along its length are symmetrically provided with insertion protrusions 211, and the two ends of the second cover 220 along its length are symmetrically provided with insertion slots 221.

[0054] In some embodiments of this application, such as Figure 5 As shown, the end of the insertion protrusion 211 near the second cover 220 is chamfered. The chamfer serves to guide the insertion protrusion 211 into the insertion slot 221, making it easier for the insertion protrusion 211 to be inserted into the insertion slot 221.

[0055] On the other hand, one embodiment of this application also provides a power system, which may include a housing, a traveling wave sensor and a traveling wave integrator 10 as described in any of the above claims, wherein the traveling wave sensor and the traveling wave integrator 10 are both disposed in the housing.

[0056] As an example, the enclosure can be a relay protection cabinet or traveling wave ranging device enclosure in a substation, a cable terminal junction box or tower monitoring unit enclosure in a transmission line, or a ring network cabinet, intelligent switch cabinet or fault indicator enclosure in a distribution network, etc.

[0057] During operation, the integrator circuit 110 is usually subject to interference from external antennas and wireless communication modules, which reduces its reliability. To address this, this application provides electromagnetic shielding protection for the integrator circuit 110 by providing a shielding cover 200 around it, thereby reducing interference from external antennas and wireless communication modules and ensuring the reliability of the integrator circuit 110.

[0058] In order not to affect the integration of power equipment, this application sets the shielding cover 200 as a split structure, that is, the shielding cover 200 is set as including a first cover 210 and a second cover 220. The first cover 210 and the second cover 220 can be stacked and assembled on opposite sides of the integrating circuit board 100. This allows the shielding cover 200 to be tightly wrapped around the integrating circuit 110 without occupying too much space to achieve electromagnetic shielding of the integrating circuit 110, and also makes the installation of the shielding cover 200 more flexible.

[0059] Furthermore, this application provides a plugging protrusion 211 on the first cover 210 and a plugging groove 221 on the second cover 220. During assembly, the plugging protrusion 211 of the first cover 210 can be inserted into the plugging groove 221 first. The engagement of the plugging protrusion 211 and the plugging groove 221 can be used to position the first cover 210 and the second cover 220. Then, welding, bonding, or other methods can be used to fix the plugging protrusion 211 to the groove wall of the plugging groove 221, thus completing the assembly of the first cover 210 and the second cover 220. Therefore, this application facilitates the assembly of the first cover 210 and the second cover 220 by providing a plugging protrusion 211 on the first cover 210 and a plugging groove 221 on the second cover 220.

[0060] In addition, considering that the integrating circuit board 100 is usually equipped with an interface 120 (such as a signal input interface 120, a signal output interface 120, etc.) to realize signal input, output and system interconnection, in order not to affect the signal transmission, the shield 200 of this application is not covered outside the interface 120, but the interface 120 is exposed so that the interface 120 can transmit signals normally.

[0061] In summary, the power system provided in this application, by covering the integrating circuit 110 of the integrating circuit board 100 with a shielding cover 200, can provide electromagnetic shielding protection for the integrating circuit 110, reduce interference from external antennas and wireless communication modules, thereby ensuring the reliability of the integrating circuit 110. It also allows the interface 120 of the integrating circuit board 100 to be exposed, ensuring normal signal input and output. Furthermore, by configuring the shielding cover 200 to include a first cover 210 and a second cover 220, it does not affect the integration requirements of the power equipment and makes the installation of the shielding cover 200 more flexible. The first cover 210 and the second cover 220 can be quickly assembled by the cooperation of the insertion protrusion 211 and the insertion slot 221.

[0062] In some embodiments of this application, the integrating circuit board 100 of the traveling wave integrator 10 may be fixedly connected to the housing. Optionally, as... Figure 1 and Figure 4 As shown, the integrating circuit board 100 has mounting holes 130 along its edge. Threaded parts (such as screws) can pass through the mounting holes 130 to connect the integrating circuit board 100 to the housing, facilitating the assembly and disassembly of the traveling wave integrator 10. As an example, each of the four corners of the integrating circuit board 100 has a mounting hole 130.

[0063] In some embodiments of this application, one end of the shield 200 of the traveling wave integrator 10 that is connected to the housing is a grounding terminal. Grounding of the shield 200 is achieved through contact between the shield 200 and the housing; this grounding method is simple and simplifies the internal structure of the housing. Specifically, the first cover 210 or the second cover 220 of the shield 200 is in contact with the housing.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A traveling wave integrator, characterized in that, include: An integrating circuit board, which includes an integrating circuit and an interface; as well as A shielding cover is provided on the outside of the integrating circuit and exposes the interface. The shielding cover includes a first cover and a second cover located on opposite sides of the integrating circuit board. The first cover has a plug-in protrusion, and the second cover has a plug-in groove. The plug-in protrusion passes through the integrating circuit board and is plugged into the plug-in groove.

2. The traveling wave integrator according to claim 1, characterized in that, The first cover and the integrating circuit are located on the same side of the integrating circuit board. The first cover includes a first cover plate and a first flange. The first cover plate faces the integrating circuit. The first flange is disposed on the edge of the first cover plate and extends toward the second cover. The first flange surrounds the outer periphery of the integrating circuit and is provided with the plug-in protrusion. The second cover includes a second cover plate, which is located on opposite sides of the integration circuit board, and the second cover plate is provided with the insertion slot.

3. The traveling wave integrator according to claim 2, characterized in that, The second cover plate has a connecting ear plate protruding from its side in the width direction and / or length direction, and the insertion groove is provided on the connecting ear plate.

4. The traveling wave integrator according to claim 2, characterized in that, The second cover also includes a detachable second flange, which is disposed on two sides in the length or width direction of the second cover, and extends toward the first cover and is located to the side of the corresponding first flange.

5. The traveling wave integrator according to claim 4, characterized in that, The second cover has a slide rail on its side in the length or width direction. The slide rail faces the first cover and has a groove. The second flange can slide into the groove from the opening of the corresponding groove in the length or width direction of the second cover and be interference-fitted with the groove.

6. The traveling wave integrator according to claim 2, characterized in that, The first flange includes two first flange portions and two second flange portions. One of the first flange portions and the second flange portions is located on the side of the first cover in the width direction, and the other is located on the side of the first cover in the length direction. The first flange portion is provided with the insertion protrusion. The second flange portion is hinged to the first cover plate and can rotate toward the integrating circuit by its own weight.

7. The traveling wave integrator according to any one of claims 1 to 6, characterized in that, The end of the insertion protrusion near the second cover has a chamfer.

8. The traveling wave integrator according to any one of claims 1 to 6, characterized in that, The first cover has symmetrically provided insertion protrusions at both ends in the width or length direction, and the second cover has symmetrically provided insertion grooves at both ends in the width or length direction.

9. An electric power system, characterized in that, It includes a housing, a traveling wave sensor, and a traveling wave integrator as described in any one of claims 1 to 8, wherein the traveling wave sensor and the traveling wave integrator are both disposed in the housing.

10. The power system according to claim 9, characterized in that, The shield of the traveling wave integrator has a grounding terminal at one end connected to the housing; and / or, the integrating circuit board of the traveling wave integrator is fixedly connected to the housing.

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