Power grid relay protection cabinet convenient for wiring

Abstract

The invention relates to the technical field of relay protection cabinets, and provides a power grid relay protection cabinet convenient for wiring, which comprises a protection cabinet body, a wiring board is arranged on one side of the protection cabinet body, a wiring hole is formed in the surface of the wiring board, and a plurality of clamping devices are arranged in the wiring hole. The clamping device comprises a placing groove, a placing plate is arranged in the placing groove, a protective sleeve is arranged on the surface of the top end of the placing plate, a telescopic column is arranged in the protective sleeve, a clamping plate is arranged at the top end of the telescopic column, movable rods are hinged to the two sides of the telescopic column, movable blocks are arranged on one sides of the movable rods, springs are arranged on one sides of the movable blocks, and the springs and the movable blocks are located in moving grooves. The two ends of the spring are connected with the movable block and the inner wall of the moving groove correspondingly, and the movable block is slidably connected into the moving groove. The problem that the edge of a traditional electric wire is prone to breakage or abrasion in the swinging process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of relay protection cabinets, in particular to a power grid relay protection cabinet which is convenient for wiring. Background Art

[0002] The operation of the power system is the basis for the normal operation of social life. Therefore, the power system must be safe and reliable, and provide high-quality and economical power supply. However, in some cases, such as the natural environment, equipment aging or failure, and the influence of human factors, the power system may fail and cause abnormal operation of the power system. The occurrence of failures and abnormalities will endanger the safe operation of the entire power system. At this time, the system's automation measures will strategically solve the accident and ensure the normal operation of the power system. This series of automation measures is called relay protection of the power system. Relay protection has shown good circuit protection function, stable operation and flexible operation. All industries related to electricity cannot do without relay protection. Relay protection cabinets are used to protect relay equipment. The relay protection cabinets currently used on the market, if the wires are accidentally pulled by external forces, will cause the wires to shake, and the wires will contact the edge of the limiting ring, which will cause certain wear and tear on the wires. Most of the limiting rings are in a fixed state, so the shaking wires are prone to wear and breakage, affecting the service life. Summary of the invention

[0003] The present invention provides a power grid relay protection cabinet that is easy to route, so as to solve the technical problem raised by the above-mentioned background technology: if the wires of the relay protection cabinets currently used on the market are accidentally pulled by external force, the wires will shake, and the wires will contact the edges of the limiting rings, which will cause certain wear on the wires. Most of the limiting rings are in a fixed state, so the shaking wires are prone to wear and breakage, which affects the service life.

[0004] In order to solve the above problems, the present invention discloses a power grid relay protection cabinet which is convenient for wiring, comprising:

[0005] The protection cabinet body has a wiring board on one side of the protection cabinet body, a wiring hole is arranged on the surface of the wiring board, and a plurality of clamping devices are arranged in the wiring hole.

[0006] Preferably, a door panel is provided on the front of the protection cabinet body, a control panel is provided on the top of the front of the door panel, and a glass observation port is provided on the bottom of the surface of the door panel.

[0007] Preferably, the clamping device includes: a placement groove, a placement plate is provided in the placement groove, a protective sleeve is provided on the top surface of the placement plate, a telescopic column is provided in the protective sleeve, a clamping plate is provided on the top of the telescopic column, movable rods are hinged on both sides of the telescopic column, movable blocks are provided on one side of the movable rods, a spring is provided on one side of the movable block, the spring and the movable block are both located in the movable groove, both ends of the spring are respectively connected to the movable block and the inner wall of the movable groove, and the movable block is slidably connected in the movable groove.

[0008] Preferably, the surface of the clamping plate is provided with rubber anti-skid particles.

[0009] Preferably, the clamping devices are distributed in the wiring holes in a ring shape and at equal intervals.

[0010] Preferably, damping structures are provided in both the telescopic column and the spring.

[0011] Preferably, it also includes:

[0012] Environmental detection module: Each wiring hole of the wiring board is provided with an environmental detection module, and the environmental detection module is used to obtain the environmental information of the location thereof, and the environmental information includes: ambient wind speed and ambient temperature;

[0013] The vibration monitoring module is set on the wire near the wiring hole;

[0014] A storage module storing historical detection values ​​of an environment detection module and a vibration monitoring module;

[0015] A first calculation module, used for calculating the current dynamic state value of the wire at each wiring hole based on the environment detection module, the vibration monitoring module and the storage module;

[0016]

[0017]

[0018] F a is the current dynamic state value of the wire at the ath wiring hole; B a is the ambient wind frequency at the ath wiring hole; V a1 V is the average value of the ambient wind speed detected by the ambient detection module at the ath wiring hole within the current third set time period; a2 The historical average detection value of the ambient wind speed detected by the environmental detection module at the a-th wiring hole; They are wind speed weight 1 and wind speed weight 2 respectively; C a is the friction coefficient of the contact surface between the movable block and the wire at the ath wiring hole; B is the unit frequency; V0 is the unit wind speed; E a is the average value of the ambient temperature detected by the environmental detection module at the a-th wiring hole within the third set time at the a-th wiring hole, and the elastic modulus of the outer layer of the corresponding wire; Aa is the tension of the wire at the ath wiring hole; R a is the radius of the wire at the ath wiring hole; D a1 is the average value of the ambient temperature detected by the environmental detection module at the ath wiring hole within the third set time at the ath wiring hole, and the corresponding overall elastic modulus of the wire; H a is the maximum amplitude detected by the vibration monitoring module at the ath wiring hole within the current third set time length; d is the unit length; E is the unit elastic modulus; are the first state evaluation weight and the second state evaluation weight respectively; π is 3.14; f a is the current stress state value at the a-th wiring hole;

[0019] The first warning module issues a warning when the current dynamic state value of the wire at the wiring hole is greater than a preset dynamic state threshold;

[0020] The first acquisition module, when the first early warning module does not issue an early warning, the first acquisition module obtains a target vibration monitoring cycle that matches the current dynamic state value of the wire at each wiring hole based on the dynamic state value-vibration monitoring cycle database, and the first control module is used to control the vibration monitoring module to operate at the target vibration monitoring cycle.

[0021] Preferably, it also includes:

[0022] Several cooling fans, the protection cabinet body is divided into several cooling areas, each cooling area is provided with a cooling fan;

[0023] The cooling fan monitoring system works periodically and includes:

[0024] A first detection module, each cooling fan corresponds to a group of first detection modules, the first detection module is used to detect the speed of the cooling fan motor, the input power of the cooling fan, the wind pressure at the cooling fan outlet, and the wind pressure at the cooling fan inlet;

[0025] A first temperature detection module, each cooling fan corresponds to a group of first temperature detection modules, and the first temperature detection module is used to detect the surface temperature of a key temperature monitoring point of the cooling fan;

[0026] A first control module is used to control the cooling fan to periodically work at a preset input power for a second set time, and control the first detection module and the first temperature detection module to perform multiple detections within the second set time;

[0027] A first curve construction module, based on the speed of the motor of the cooling fan and the input power of the cooling fan within the current second set time, constructs an actual input power-speed curve; the second set time is divided into a plurality of first set time;

[0028] A second calculation module, used for calculating a cooling fan status value based on the first detection module;

[0029] A second curve building module is used to build a cooling fan state value change curve by taking the midpoint time of the current first set time as the horizontal coordinate and the cooling fan state value as the vertical coordinate;

[0030] A third calculation module, used to calculate a fan evaluation value W1 based on a cooling fan state value change curve;

[0031] The first determination module is used to determine that a cooling fan whose fan evaluation value is less than a preset fan evaluation value is a first abnormal cooling fan, and to determine that a cooling fan whose fan evaluation value is greater than or equal to the preset fan evaluation value is a first cooling fan.

[0032] Preferably, the second calculation module is calculated based on the following formula:

[0033]

[0034] W 1zh is the cooling fan status value of the hth first set duration of the current working cycle of the zth cooling fan; 1zh is the input power of the cooling fan in the hth first set time of the current working cycle of the zth cooling fan; S is the cross-sectional area of ​​the air outlet of the cooling fan; ρ is the density of the air; Q 1zh is the average detected value of the wind pressure at the air outlet of the cooling fan within the first set time of the h current working cycles of the zth cooling fan; σ is the flow factor; Q 2zh is the average detected value of the wind pressure at the air inlet of the cooling fan within the h first set time periods of the current working cycle of the zth cooling fan; z is the similarity between the actual input power-speed curve of the zth cooling fan and the corresponding standard input power-speed curve; T zha is the surface temperature of the ath key temperature monitoring point of the cooling fan within the hth first set time duration of the current working cycle of the zth cooling fan; T zha0 T zha The maximum allowable temperature at the location; T0 is the unit temperature; min represents the minimum value; π is 3.14;

[0035] The third calculation module is based on the following calculation formula:

[0036]

[0037] S 1z is the area enclosed by the cooling fan state value change curve of the zth cooling fan and the abscissa and the straight line whose abscissa is always the boundary of the cooling fan state value change curve; S0 is S 1z The corresponding theoretical value; k1 is the average value of the absolute value of the slope of the cooling fan state value change curve; k3 is the maximum slope of the cooling fan state value change curve; k2 is the minimum slope of the cooling fan state value change curve; τ1 and τ2 are slope weight 1 and slope weight 2 respectively; W 1z is the fan evaluation value of the z-th cooling fan.

[0038] Preferably, the cooling fan monitoring system further includes:

[0039] A second temperature detection module, each area to be cooled corresponds to a second temperature detection module, the second temperature detection module includes a plurality of temperature sensors, each device to be cooled in the area to be cooled is provided with a temperature sensor, the temperature sensor is used to detect the surface temperature of the corresponding device;

[0040] A fourth calculation module, used for calculating the heat dissipation evaluation value of each device requiring heat dissipation in each area to be heat dissipated;

[0041] The fifth calculation module is used to calculate the target input power of each first cooling fan based on the third calculation module, and the first control module controls the first cooling fan to operate at the corresponding target input power.

[0042] Compared with the prior art, the present invention has the following beneficial effects: the present invention cooperates with the placement groove, placement plate, protective sleeve, telescopic column, clamping plate, movable rod, movable block, spring, movable groove and anti-slip particles. When the wire is accidentally pulled and shaken by external force, the telescopic column moves in the direction of the shaking. At the same time, the movable rod squeezes the movable block to both sides, so that the movable block moves to squeeze the spring, and the spring is compressed synchronously. Therefore, under the action of the telescopic column and the spring, the impact force of the shaking is effectively buffered, which solves the problem that the edges of the traditional wires are prone to breakage or wear during the swinging process.

[0043] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0045] In the attached picture:

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is a schematic diagram of the wiring hole and the clamping device structure of the present invention;

[0048] Figure 3 It is a schematic diagram of the structure of the clamping device of the present invention;

[0049] In the figure: 1. protection cabinet; 2. door panel; 3. control panel; 4. glass observation port; 5. wiring board; 6. wiring hole; 7. clamping device; 8. anti-slip particles; 701. placement slot; 702. placement plate; 703. protective sleeve; 704. telescopic column; 705. clamping plate; 706. movable rod; 707. movable block; 708. spring; 709. movable slot. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0051] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0053] The present invention provides the following embodiments

[0054] Embodiment 1, the embodiment of the present invention provides a power grid relay protection cabinet which is convenient for wiring. Figure 1-Figure 3 As shown, including:

[0055] The protection cabinet body 1 has a wiring board 5 on one side thereof, a wiring hole 6 is provided on the surface of the wiring board 5, and a plurality of clamping devices 7 are provided in the wiring hole 6.

[0056] Specifically, a door panel 2 is provided on the front of the protection cabinet body 1 , a control panel 3 is provided on the top of the front of the door panel 2 , and a glass observation port 4 is provided on the bottom of the surface of the door panel 2 .

[0057] Specifically, the clamping device includes: a placement groove 701, a placement plate 702 is provided in the placement groove 701, a protective sleeve 703 is provided on the top surface of the placement plate 702, a telescopic column 704 is provided in the protective sleeve 703 (the telescopic column 704 is slidably provided in the protective sleeve 703), a clamping plate 705 is provided on the top of the telescopic column 704, movable rods 706 are hinged on both sides of the telescopic column 704, movable blocks 707 are provided on one side of the movable rod 706, a spring 708 is provided on one side of the movable block 707, the spring 708 and the movable block 707 are both located in the movable groove 709, the two ends of the spring 708 are respectively connected to the movable block 707 and the inner wall of the movable groove 709, and the movable block 707 is slidably connected in the movable groove 709.

[0058] Specifically, the surface of the clamping plate 705 is provided with rubber anti-skid particles 8 .

[0059] Specifically, the clamping devices 7 are distributed in the wiring holes 6 in a ring shape and at equal intervals.

[0060] Specifically, damping structures are provided in the telescopic column 704 and the spring 708 .

[0061] The number of wiring holes 6 is several and they are evenly distributed.

[0062] Specifically, the beneficial effects of the above technical solution are:

[0063] Specifically, when the wire is clamped by the clamping plate 705 through the wiring hole 6, if it is accidentally pulled by external force and causes the wire to shake, the wire moves in the direction of the shaking, and at the same time, the clamping plate 705 squeezes the telescopic column 704 to shrink in the protective sleeve 703, and at the same time, the movable rod 706 squeezes to both sides, so that the movable block 707 moves in the movable groove 709, so that the spring 708 shrinks. Since the spring 708 and the telescopic column 704 are extended and retracted, the impact force of the shaking of the wire is effectively alleviated, preventing the edge of the wire from being worn or broken, and the anti-slip particles 8 can increase the friction between the clamping plate 705 and the wire to prevent the wire from sliding.

[0064] To summarize, the present invention cooperates with the placement groove 701, the placement plate 702, the protective sleeve 703, the telescopic column 704, the clamping plate 705, the movable rod 706, the movable block 707, the spring 708, the movable groove 709 and the anti-slip particles 8. When the wire is accidentally pulled and shaken by external force, the telescopic column 704 moves along the shaking direction. At the same time, the movable rod 706 squeezes the movable block 707 to both sides, so that the movable block 707 moves to squeeze the spring 708, and the spring 708 is compressed synchronously. Therefore, under the action of the telescopic column 704 and the spring 708, the impact force of the shaking is effectively buffered, thereby solving the problem that the edges of the traditional wires are prone to breakage or wear during the swinging process.

[0065] Embodiment 2, based on embodiment 1, further comprises:

[0066] An environmental detection module is provided at each wiring hole 6 of the wiring board 5. The environmental detection module is used to obtain environmental information at the location thereof, and the environmental information includes: ambient wind speed and ambient temperature;

[0067] A vibration monitoring module is provided on the wire near the wiring hole 6;

[0068] A storage module storing historical detection values ​​of an environment detection module and a vibration monitoring module;

[0069] A first calculation module, used for calculating the current dynamic state value of the wire at each wiring hole 6 based on the environment detection module, the vibration monitoring module and the storage module;

[0070]

[0071] F a is the current dynamic state value of the wire at the ath wiring hole 6; B a is the ambient wind frequency at the ath wiring hole 6; V a1 V is the average value of the ambient wind speed detected by the ambient detection module at the ath wiring hole 6 within the current third set time period; a2 The historical average detection value of the ambient wind speed detected by the environmental detection module at the a-th wiring hole 6; They are wind speed weight 1 and wind speed weight 2 (both values ​​are greater than 0 and less than 1); C a is the friction coefficient of the contact surface between the movable block 707 at the ath wiring hole 6 and the wire; B is the unit frequency; V0 is the unit wind speed; E a is the average value of the ambient temperature detected by the environmental detection module at the ath wiring hole 6 within the current third set time at the ath wiring hole 6, and the elastic modulus of the outer layer of the corresponding wire; A a is the tension of the wire at the ath wiring hole 6; R a is the radius of the wire at the ath wiring hole 6; D a1 is the average value of the ambient temperature detected by the environmental detection module at the ath wiring hole 6 within the current third set time at the ath wiring hole 6, and the corresponding overall elastic modulus of the wire; H a is the maximum amplitude detected by the vibration monitoring module at the ath wiring hole 6 within the current third set time length; d is the unit length; E is the unit elastic modulus; are the first state evaluation weight and the second state evaluation weight respectively (both values ​​are greater than 0 and less than 1); π is 3.14; f a is the current stress state value at the a-th wiring hole 6;

[0072] The first warning module issues a warning when the current dynamic state value of the wire at the wiring hole 6 is greater than a preset dynamic state threshold;

[0073] The first acquisition module, when the first warning module does not warn, the first acquisition module obtains the target vibration monitoring cycle that matches the current dynamic state value of the wire at each wiring hole 6 based on the dynamic state value-vibration monitoring cycle database, and the first control module is used to control the vibration monitoring module to operate with the target vibration monitoring cycle.

[0074] The beneficial effects of the above technical solution are:

[0075] The wires at the wiring hole 6 are affected by the wind speed of the external environment. When the clamping performance of the clamping device is abnormal or the wind speed is too high, the wires will vibrate. Therefore, when the wind speed is high, it is necessary to detect the vibration information of the wires through the vibration monitoring module. When the vibration information of the wires detected by the vibration monitoring module is abnormal, an alarm is issued in time to avoid damage to the wires and equipment;

[0076] f a The current stress state value of the wire (reflecting the vibration stress state of the wire) is obtained based on the tension, material parameters and vibration state (amplitude) of the wire. is the ambient wind state value (wind intensity state) obtained based on the ambient wind speed;

[0077] Combination The current dynamic state value of the wire is obtained, and a suitable target vibration monitoring period is selected based on the current dynamic state value of the wire to ensure the monitoring effect.

[0078] Embodiment 3, based on embodiment 1, 8. A power grid relay protection cabinet for facilitating wiring according to claim 3, characterized in that it also includes:

[0079] Several cooling fans, the protection cabinet body 1 is divided into several cooling areas, each cooling area is provided with a cooling fan;

[0080] The cooling fan monitoring system works periodically and includes:

[0081] A first detection module, each cooling fan corresponds to a group of first detection modules, the first detection module is used to detect the speed of the cooling fan motor, the input power of the cooling fan, the wind pressure at the cooling fan outlet, and the wind pressure at the cooling fan inlet;

[0082] A first temperature detection module, each cooling fan corresponds to a group of first temperature detection modules, and the first temperature detection module is used to detect the surface temperature of a key temperature monitoring point of the cooling fan;

[0083] A first control module is used to control the cooling fan to periodically work at a preset input power for a second set time, and control the first detection module and the first temperature detection module to perform multiple detections within the second set time;

[0084] A first curve construction module constructs an actual input power-speed curve based on the speed of the motor of the cooling fan and the input power of the cooling fan within the current second set time period; the second set time period is divided into a plurality of first set time periods;

[0085] A second calculation module, used for calculating a cooling fan status value based on the first detection module;

[0086] A second curve building module is used to build a cooling fan state value change curve by taking the midpoint time of the current first set time as the horizontal coordinate and the cooling fan state value as the vertical coordinate;

[0087] A third calculation module, used to calculate a fan evaluation value W1 based on a cooling fan state value change curve;

[0088] The first determination module is used to determine that a cooling fan whose fan evaluation value is less than a preset fan evaluation value is a first abnormal cooling fan, and to determine that a cooling fan whose fan evaluation value is greater than or equal to the preset fan evaluation value is a first cooling fan.

[0089] Preferably,

[0090] W 1zh is the cooling fan status value of the hth first set duration of the current working cycle of the zth cooling fan; 1zh is the input power of the cooling fan in the hth first set time of the current working cycle of the zth cooling fan; S is the cross-sectional area of ​​the air outlet of the cooling fan; ρ is the density of the air; Q 1zh is the average detected value of the wind pressure at the air outlet of the cooling fan within the first set time of the h current working cycles of the zth cooling fan; σ is the flow factor; Q 2zh is the average detected value of the wind pressure at the air inlet of the cooling fan within the h first set time periods of the current working cycle of the zth cooling fan; z is the similarity between the actual input power-speed curve of the zth cooling fan and the corresponding standard input power-speed curve; T zha is the surface temperature of the ath key temperature monitoring point of the cooling fan within the hth first set time duration of the current working cycle of the zth cooling fan; T zha0 T zha The maximum allowable temperature at the location; T0 is the unit temperature; min represents the minimum value; π is 3.14;

[0091] The third calculation module is based on the following formula:

[0092]

[0093] S 1z is the area enclosed by the cooling fan state value change curve of the zth cooling fan and the abscissa and the straight line whose abscissa is always the boundary of the cooling fan state value change curve; S0 is S 1z The corresponding theoretical value; k1 is the average value of the absolute value of the slope of the cooling fan state value change curve; k3 is the maximum slope of the cooling fan state value change curve; k2 is the minimum slope of the cooling fan state value change curve; τ1 and τ2 are slope weight 1 and slope weight 2 respectively (both values ​​are greater than 0 and less than 1); W 1z is the fan evaluation value of the z-th cooling fan.

[0094] The beneficial effects of the above technical solution are: the cooling fan monitoring system works periodically, and each working cycle first works for the second set time to test the working performance of the cooling fan, and constructs an actual input power-speed curve to determine the actual change state of the cooling fan speed with the input power in the current working cycle, and then: based on the similarity between the actual input power-speed curve and the corresponding standard input power-speed curve, the current first performance state of the cooling fan is determined, based on: the first performance state, the ratio state of the cooling fan's air outlet parameters and the input power and based on the temperature correction to obtain the cooling fan state value for the first set time, the current second performance state of the cooling fan is determined, based on the second performance state, a cooling fan state value change curve is constructed, and based on the cooling fan state value change curve, a fan evaluation value W1 is obtained, and a cooling fan whose fan evaluation value is less than the preset fan evaluation value is determined as a first abnormal cooling fan, and a reminder is given to overhaul the first abnormal cooling fan to ensure the working reliability of the cooling fan.

[0095] Embodiment 4, based on any one of embodiments 1-3, the cooling fan monitoring system further includes:

[0096] A second temperature detection module, each area to be cooled corresponds to a second temperature detection module, the second temperature detection module includes a plurality of temperature sensors, each device to be cooled in the area to be cooled is provided with a temperature sensor, the temperature sensor is used to detect the surface temperature of the corresponding device;

[0097] A fourth calculation module, used for calculating the heat dissipation evaluation value of each device requiring heat dissipation in each area to be heat dissipated;

[0098] a fifth calculation module, configured to calculate a target input power of each first cooling fan based on the third calculation module, and the first control module controls the first cooling fan to operate at the corresponding target input power;

[0099] The fourth calculation module is calculated based on the following formula:

[0100]

[0101] Q xy is the heat dissipation evaluation value of the yth device that needs heat dissipation in the xth area to be cooled; γ xy is the surface heat transfer coefficient of the yth device to be cooled in the xth area to be cooled; R xy H is the area of ​​the heat dissipation area of ​​the yth device to be cooled in the xth heat dissipation area that is blown by the cooling fan; xy H is the average detection value of the temperature sensor of the yth device to be cooled in the xth area to be cooled within the second set time of the current working cycle; xy0 H is the target operating temperature of the yth device to be cooled in the xth area to be cooled; xy1 H is the maximum detection value of the temperature sensor within the second set time length of the current working cycle of the yth device to be cooled in the xth area to be cooled; xy2 is the minimum detection value of the temperature sensor within the second set time length of the current working cycle of the yth device to be cooled in the xth area to be cooled; t xy H xy1 and H xy2 The absolute value of the time difference of the corresponding detection time; G xy is the historical maximum temperature rise per unit time of the yth device to be cooled in the xth area to be cooled under the current working parameters; For combination G xy The evaluation coefficient obtained (based on the preset Evaluation coefficient mapping table or function acquisition);

[0102] The fifth calculation module is based on the following formula:

[0103]

[0104] V z0 is the target input power of the zth first cooling fan, For combination The first input power of the zth first cooling fan is obtained (based on the preset -first input power mapping table acquisition); max represents the maximum value; Q xy Y is the heat dissipation evaluation value of the yth device to be cooled in the cooling area corresponding to the zth first cooling fan; z is the total number of components that need to dissipate heat corresponding to the zth first cooling fan; W 1z is the fan evaluation value of the z-th first cooling fan.

[0105] The beneficial effects of the above technical solution are:

[0106] Based on the heat dissipation evaluation value of each device requiring heat dissipation in the heat dissipation area of ​​the first heat dissipation fan and the corresponding fan evaluation value, the target input power of the first heat dissipation fan is calculated to ensure that the first heat dissipation fan selects a suitable target input power to ensure the heat dissipation effect.

[0107] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A power grid relay protection cabinet that is convenient for wiring, characterized in that: include: A protection cabinet body (1) is provided with a wiring board (5) on one side of the protection cabinet body (1), a wiring hole (6) is provided on the surface of the wiring board (5), and a plurality of clamping devices (7) are provided in the wiring hole (6).

2. A power grid relay protection cabinet that is convenient for wiring according to claim 1, characterized in that: A door panel (2) is provided on the front of the protection cabinet body (1), a control panel (3) is provided on the top of the front of the door panel (2), and a glass observation port (4) is provided on the bottom of the surface of the door panel (2).

3. The grid relay protection cabinet that is convenient for wiring according to claim 1 is characterized in that: The clamping device comprises: a placement groove (701), a placement plate (702) is arranged in the placement groove (701), a protective sleeve (703) is arranged on the top surface of the placement plate (702), a telescopic column (704) is arranged in the protective sleeve (703), a clamping plate (705) is arranged on the top of the telescopic column (704), movable rods (706) are hinged on both sides of the telescopic column (704), a movable block (707) is arranged on one side of the movable rod (706), a spring (708) is arranged on one side of the movable block (707), the spring (708) and the movable block (707) are both located in a movable groove (709), two ends of the spring (708) are respectively connected to the movable block (707) and the inner wall of the movable groove (709), and the movable block (707) is slidably connected in the movable groove (709).

4. The grid relay protection cabinet that is convenient for wiring according to claim 1 is characterized in that: The surface of the clamping plate (705) is provided with rubber anti-skid particles (8).

5. The grid relay protection cabinet that is convenient for wiring according to claim 1 is characterized in that: The clamping devices (7) are distributed in the wiring holes (6) in an annular shape and at equal intervals.

6. The grid relay protection cabinet that is convenient for wiring according to claim 1 is characterized in that: Damping structures are provided inside the telescopic column (704) and the spring (708).

7. The grid relay protection cabinet that is convenient for wiring according to claim 3 is characterized in that: Also includes: An environmental detection module is provided at each wiring hole (6) of the wiring board (5), and the environmental detection module is used to obtain environmental information at the location thereof, and the environmental information includes: environmental wind speed and environmental temperature; A vibration monitoring module is arranged on the wire near the wiring hole (6); A storage module storing historical detection values ​​of an environment detection module and a vibration monitoring module; A first calculation module, used for calculating the current dynamic state value of the wire at each wiring hole (6) based on the environment detection module, the vibration monitoring module and the storage module; F a is the current dynamic state value of the wire at the ath wiring hole (6); B a is the ambient wind frequency at the ath wiring hole (6); V a1 V is the average value of the ambient wind speed detected by the ambient detection module at the ath wiring hole (6) within the current third set time period; a2 is the historical average detection value of the ambient wind speed detected by the ambient detection module at the ath wiring hole (6); They are wind speed weight 1 and wind speed weight 2 respectively; C a is the friction coefficient of the contact surface between the movable block (707) at the ath wiring hole (6) and the wire; B is the unit frequency; V0 is the unit wind speed; E a is the average value of the ambient temperature detected by the environmental detection module at the ath wiring hole (6) within the third set time period at the ath wiring hole (6), and the elastic modulus of the outer layer of the corresponding wire; A a is the tension of the wire at the ath wiring hole (6); R a is the radius of the wire at the ath wiring hole (6); D a1 is the average value of the ambient temperature detected by the environmental detection module at the ath wiring hole (6) within the third set time period at the ath wiring hole (6), and the corresponding overall elastic modulus of the wire; H a is the maximum amplitude detected by the vibration monitoring module at the ath wiring hole (6) within the current third set time period; d is the unit length; E is the unit elastic modulus; are the first state evaluation weight and the second state evaluation weight respectively; π is 3.14; f a is the current stress state value at the ath wiring hole (6); A first early warning module, which issues an early warning when the current dynamic state value of the wire at the wiring hole (6) is greater than a preset dynamic state threshold value; The first acquisition module, when the first warning module does not issue a warning, the first acquisition module obtains a target vibration monitoring cycle that matches the current dynamic state value of the wire at each wiring hole (6) based on the dynamic state value-vibration monitoring cycle database, and the first control module is used to control the vibration monitoring module to operate at the target vibration monitoring cycle.

8. The grid relay protection cabinet that is convenient for wiring according to claim 3 is characterized in that: Also includes: A plurality of cooling fans, wherein the protection cabinet body (1) is divided into a plurality of cooling areas, and each cooling area is provided with a cooling fan; The cooling fan monitoring system works periodically and includes: A first detection module, each cooling fan corresponds to a group of first detection modules, the first detection module is used to detect the speed of the cooling fan motor, the input power of the cooling fan, the wind pressure at the cooling fan outlet, and the wind pressure at the cooling fan inlet; A first temperature detection module, each cooling fan corresponds to a group of first temperature detection modules, and the first temperature detection module is used to detect the surface temperature of a key temperature monitoring point of the cooling fan; A first control module is used to control the cooling fan to periodically work at a preset input power for a second set time, and control the first detection module and the first temperature detection module to perform multiple detections within the second set time; A first curve construction module constructs an actual input power-speed curve based on the speed of the motor of the cooling fan and the input power of the cooling fan within the current second set time period; the second set time period is divided into a plurality of first set time periods; A second calculation module, used for calculating a cooling fan status value based on the first detection module; A second curve building module is used to build a cooling fan state value change curve by taking the midpoint time of the current first set time as the horizontal coordinate and the cooling fan state value as the vertical coordinate; A third calculation module, used to calculate a fan evaluation value based on a cooling fan state value change curve; The first determination module is used to determine that a cooling fan whose fan evaluation value is less than a preset fan evaluation value is a first abnormal cooling fan, and to determine that a cooling fan whose fan evaluation value is greater than or equal to the preset fan evaluation value is a first cooling fan.

9. The grid relay protection cabinet that is convenient for wiring according to claim 8 is characterized in that: The second calculation module is based on the following formula: W 1zh is the cooling fan status value of the hth first set duration of the current working cycle of the zth cooling fan; 1zh is the input power of the cooling fan in the hth first set time of the current working cycle of the zth cooling fan; S is the cross-sectional area of ​​the air outlet of the cooling fan; ρ is the density of the air; Q 1zh is the average detected value of the wind pressure at the air outlet of the cooling fan within the first set time of the h current working cycles of the zth cooling fan; σ is the flow factor; Q 2zh is the average detected value of the wind pressure at the air inlet of the cooling fan within the h first set time periods of the current working cycle of the zth cooling fan; z is the similarity between the actual input power-speed curve of the zth cooling fan and the corresponding standard input power-speed curve; T zha is the surface temperature of the ath key temperature monitoring point of the cooling fan within the hth first set time duration of the current working cycle of the zth cooling fan; T zha0 T zha The maximum allowable temperature at the location; T0 is the unit temperature; min represents the minimum value; The value of π is 3.14; The third calculation module is based on the following formula: S 1z is the area enclosed by the cooling fan state value change curve of the zth cooling fan and the abscissa and the straight line whose abscissa is always the boundary of the cooling fan state value change curve; S0 is S 1z The corresponding theoretical value; k1 is the average value of the absolute value of the slope of the cooling fan state value change curve; k3 is the maximum slope of the cooling fan state value change curve; k2 is the minimum slope of the cooling fan state value change curve; τ1 and τ2 are slope weight 1 and slope weight 2 respectively; W 1z is the fan evaluation value of the z-th cooling fan.

10. The grid relay protection cabinet for convenient wiring according to claim 8, characterized in that: The cooling fan monitoring system also includes: A second temperature detection module, each area to be cooled corresponds to a second temperature detection module, the second temperature detection module includes a plurality of temperature sensors, each device to be cooled in the area to be cooled is provided with a temperature sensor, the temperature sensor is used to detect the surface temperature of the corresponding device; A fourth calculation module, used for calculating the heat dissipation evaluation value of each device requiring heat dissipation in each area to be heat dissipated; The fifth calculation module is used to calculate the target input power of each first cooling fan based on the third calculation module, and the first control module controls the first cooling fan to operate at the corresponding target input power.

Images