CN209472383U - A kind of resistance eutral grounding complexes - Google Patents

Abstract

The utility model discloses a kind of resistance eutral grounding complexes, including cabinet, the side of cabinet is connected with panel, side in cabinet far from panel is equipped with fixed strip, one end of fixed strip is equipped with backboard by fixing screws, and backboard is equipped with the first terminal plate and the second terminal plate, is respectively connected with 16 connecting terminals on the first terminal plate and the second terminal plate, control system is installed, the upper end of panel is equipped with liquid crystal display in cabinet.This resistance eutral grounding complexes, it is provided with current detection means, counting device, time set, infrared temperature probe, temperature sensor and humidity sensor, recordable single-phase-to-ground current size, is grounded number, is grounded the time, resistor disc temperature, environment temperature and humidity, and landing operation number can be recorded, parameters are set by liquid crystal display, man-machine interface is simple to operate, full menu in Chinese, rich display information are intuitive.

Description

A kind of resistance eutral grounding complexes

Technical field

The utility model relates to resistor box technical field, specially a kind of resistance eutral grounding complexes.

Background technique

Resistor box, generator neutral point high resistance ground prevent the harm of various overvoltage with restricted grounding current, neutral Point acts on tripping by the sensitivity that resistance-grounded system fault current limitation to appropriate value, can improve relay protection, together When so that the only possible generation in fault point is locally slightly burnt again, transient overvoltage is restricted to normal line voltage voltage to neutral 2.6 times, restriking for electric arc is limited, prevents arc gap overvoltage from damaging main equipment, while ferromagnetic resonance can be effectively prevent excessively electric Pressure, to guarantee the safe operation of generator.The existing recordable parameter of resistor box is few, and information transmission is inconvenient, event occurs It cannot be handled in time when barrier, not adapt to present development need.

Utility model content

The purpose of this utility model is to provide a kind of resistance eutral grounding complexes, have monitoring multiple parameters, have logical The advantages of communication interface, safety, high reliablity, solve the problems of the prior art.

To achieve the above object, the utility model provides the following technical solutions: a kind of resistance eutral grounding complexes, including machine Case, the side of the cabinet are connected with panel, and the side far from panel is equipped with fixed strip in cabinet, and one end of fixed strip passes through Fixing screws are equipped with backboard, and backboard is equipped with the first terminal plate and the second terminal plate, on the first terminal plate and the second terminal plate 16 connecting terminals are respectively connected with, control system and electrical component are installed in cabinet, the upper end of the panel is equipped with liquid Crystal display screen is sequentially installed with indicator lamp groups on the panel of lower section, key group is equipped on the panel below indicator lamp groups, described Indicator lamp groups include grounded signal lamp and heating lamp, and heating lamp is sequentially installed with row far from the side of grounded signal lamp Wind indicator light, run indicator and electrical resistance overheats indicator light, the key group include increasing key and reducing key, and reducing key is far from increasing The side of plus key is sequentially installed with acknowledgement key, cancel key and reset key, and the control system includes main control module and memory module, Main control module and memory module are electrically connected, and main control module is electrically connected with watchdog circuit and clock module, main control module Ground detection module, context detection module has been electrically connected in input terminal, and the output end of main control module has been electrically connected The output end of alarm module and communication interface, alarm module is electrically connected having heaters and blower by connecting terminal, mould of alarming The output end of block is electrically connected with grounded signal lamp and electrical resistance overheats indicator light respectively, and heater and blower are indicated with heating respectively Lamp and air draft indicator light are electrically connected, and the input terminal of the ground detection module is electrically connected with time set by connecting terminal And counting device, current detection means, counting device and time set are electrically connected with ground terminal respectively, the environment measuring mould The input terminal of block is electrically connected with temperature sensor and humidity sensor by connecting terminal, and the electrical component includes that ground connection becomes Depressor, ground resistance and current transformer, grounding transformer, ground resistance and current transformer are sequentially connected in series, grounding transformer It is electrically connected with main control module, one end ground connection of current transformer, current transformer and ground detection module are electrically connected, ground connection The infrared temperature probe of face ground resistance is installed in the cabinet of the side of resistance.

Preferably, the main control module and liquid crystal display are electrically connected.

Preferably, the input terminal of the main control module is electrically connected with power end by connecting terminal.

Preferably, the model RS485 of the communication interface, communication interface are connected by connecting terminal and higher level's monitoring system It connects.

Preferably, the context detection module chooses whether to add as needed, and heater and blower are apolegamy function.

Preferably, the cabinet, panel and backboard are component made of stainless steel plate material.

Preferably, the side of the cabinet is connected by hinge cabinet door, and the other side of cabinet is equipped with male connector switch, cabinet door Inside be equipped with and switched with the female that matches of male connector switch, controller, controller and main control module electricity are installed in cabinet door Property connection.

Compared with prior art, the beneficial effects of the utility model are as follows:

This resistance eutral grounding complexes are provided with current detection means, counting device, time set, infrared measurement of temperature sensing Device, temperature sensor and humidity sensor can record single-phase-to-ground current size, be grounded number, be grounded time, resistor disc temperature Degree, environment temperature and humidity, and landing operation number can be recorded, parameters are set by liquid crystal display, it is man-machine Interface operation is simple and convenient, and full menu in Chinese, rich display information is intuitive, while having communication interface, can will test record Information reaches master control room, and the security reliability for running system has obtained large increase, while also meeting substation and caning nobody The demand for development of post, heater and blower take corresponding measure, timely handling failure, cabinet, panel and backboard according to failure Material uses stainless steel plate, and aesthetic in appearance, corrosion resistance is strong, and resistance value is stablized, corrosion-resistant, good toughness is indeformable, high reliablity.

Detailed description of the invention

Fig. 1 is the front view of the utility model；

Fig. 2 is the side view of the utility model；

Fig. 3 is the rearview of the utility model；

Fig. 4 is the control system circuit figure of the utility model；

Fig. 5 partial circuit connection figure；

Fig. 6 parts of electrical components circuit connection diagram.

In figure: 1, cabinet；11, fixed strip；12, male connector switchs；2, panel；21, liquid crystal display；22, indicator lamp groups； 221, grounded signal lamp；222, heating lamp；223, air draft indicator light；224, run indicator；225, electrical resistance overheats indicate Lamp；23, key group；231, increasing key；232, reducing key；233, acknowledgement key；234, cancel key；235, reset key；3, backboard； 31, the first terminal plate；32, the second terminal plate；33, connecting terminal；4, control system；41, main control module；42, memory module； 43, watchdog circuit；44, clock module；45, ground detection module；451, time set；452, counting device；46, communication connects Mouthful；47, context detection module；471, temperature sensor；472, humidity sensor；48, alarm module；481, heater；482, Blower；5, cabinet door；51, female switchs；6, electrical component；61, grounding transformer；62, ground resistance；63, current transformer； 64, infrared temperature probe.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It please refers to Fig. 1-5, a kind of resistance eutral grounding complexes, including cabinet 1, the side of cabinet 1 and is connected with panel 2, machine Side in case 1 far from panel 2 is equipped with fixed strip 11, and one end of fixed strip 11 is equipped with backboard 3, cabinet by fixing screws 1, panel 2 and backboard 3 are component made of stainless steel plate material, and aesthetic in appearance, corrosion resistance is strong, and degree of protection is reachable IP55, backboard 3 are equipped with the first terminal plate 31 and the second terminal plate 32, are all connected on the first terminal plate 31 and the second terminal plate 32 There are 16 connecting terminals 33, backboard 3 connecting terminal, 33 schematic diagrames are as follows:

First terminal plate, 31 wiring explanation:

1,2: earth current input terminal；

4,5,6,7: Temperature Humidity Sensor interface, the red line of sensor meet 5V, and black line meets GND, and white line connects environment temperature, yellow Line connects ambient humidity；

9,10,11: being respectively resistance temperature sensor interface, sensor red line connects (+), and black line connects (-) end.Shielding line Connect 11；

12,13:RS485 communication interface；

Second terminal plate, 32 wiring explanation:

1,2: heating；

4,5: blower；

7,8: earth current warning output end；

10,11: electrical resistance overheats warning output end；

14,15: installation's power source；

16: shielding ground.

Control system 4 and electrical component 6 are installed, the upper end of panel 2 is equipped with liquid crystal display 21, lower section in cabinet 1 Panel 2 on be sequentially installed with indicator lamp groups 22, key group 23, indicator lamp groups are installed on the panel 2 of 22 lower section of indicator lamp groups 22 include grounded signal lamp 221 and heating lamp 222, and side of the heating lamp 222 far from grounded signal lamp 221 is successively Air draft indicator light 223, run indicator 224 and electrical resistance overheats indicator light 225 are installed, grounded signal lamp 221 occurs in system It is lighted when single-phase earthing, heating lamp 222 is lighted when heater 481 is opened, and air draft indicator light 223 is opened in blower 482 When light, run indicator 224 flashes after device powers on, and electrical resistance overheats indicator light 225 is lighted in electrical resistance overheats, presses Key group 23 includes increasing key 231 and reducing key 232, and reducing key 232 is sequentially installed with acknowledgement key far from the side of increasing key 231 233, cancel key 234 and reset key 235, key group 23 is for setup parameter, operation, key group 23 and the master control mould such as check information Block 41 is electrically connected, and control system 4 includes main control module 41 and memory module 42, and main control module 41 and memory module 42 are electrically Connection, memory module 42 can save 30 fault messages occurred recently, and data are not lost after power loss, main control module 41 and liquid Crystal display screen 21 is electrically connected, and liquid crystal display 21 is used to show Trouble Report, check and parameter is set etc., main control module 41 It is electrically connected with watchdog circuit 43 and clock module 44, watchdog circuit 43 prevents crash phenomenon, and clock module 44 is used In being arranged and recording the time, ground detection module 45 and context detection module has been electrically connected in the input terminal of main control module 41 47, ground detection module 45 and context detection module 47 obtain corresponding detection data respectively, are transmitted to main control module 41, And judged and handled by main control module 41, the output end of main control module 41 has been electrically connected alarm module 48 and has led to Communication interface 46, alarm module 48 are used to feed back the processing result of main control module 41, and the input terminal of main control module 41 passes through terminals Son 33 is electrically connected with power end, the model RS485 of communication interface 46, and communication interface 46 is supervised by connecting terminal 33 and higher level The connection of control system, communication interface 46 are transmitted to higher level's monitoring system for information is handled, and the output end of alarm module 48 passes through wiring Terminal 33 is electrically connected having heaters 481 and blower 482, and the setting value or environment temperature that ambient humidity is higher than system are lower than setting Start heater 481 when value, the setting value that resistance temperature is higher than system starts blower 482, the output end difference of alarm module 48 Be electrically connected with grounded signal lamp 221 and electrical resistance overheats indicator light 225, heater 481 and blower 482 respectively with heating lamp 222 and air draft indicator light 223 be electrically connected, heater 481 and blower 482 are apolegamy function, the input of ground detection module 45 End is electrically connected with time set 451 and counting device 452 by connecting terminal 33, and counting device 452 and time set 451 divide It is not electrically connected with ground terminal, can record single-phase-to-ground current size, ground connection number and ground connection time, context detection module 47 Input terminal is electrically connected with temperature sensor 471 and humidity sensor 472 by connecting terminal 33, and context detection module 47 According to needing to choose whether to add, electrical component 6 includes grounding transformer 61, ground resistance 62 and current transformer 63, and ground connection becomes Depressor 61, ground resistance 62 and current transformer 63 are sequentially connected in series, and grounding transformer 61 and main control module 41 are electrically connected, master control Module 41 controls the switch of grounding transformer 61, one end ground connection of current transformer 63, current transformer 63 and earthing detection mould Block 45 is electrically connected, and current transformer 63 is equipped with face ground connection for detecting electric current in the cabinet 1 of the side of ground resistance 62 The infrared temperature probe 64 of resistance 62, for infrared temperature probe 64 for measuring resistance temperature, thermometric speed is fast, realizes that nothing connects Thermometric is touched, it is completely isolated with high-pressure side, more securely and reliably.

Preferably, the side of cabinet 1 is connected by hinge cabinet door 5, the other side of cabinet 1 is equipped with male connector switch 12, the inside of cabinet door 5 is equipped with the female switch 51 matched with male connector switch 12, is switched by external cabinet door 5 and male connector 12 with the cooperation of female switch 51, controller is installed in cabinet door 5, controller and main control module 41 are electrically connected, realize entirely The safety of device.

The course of work: line related, installation counting device 452, time set 451, heating are connected by connecting terminal 33 Device 481 and blower 482, set parameters by liquid crystal display 21 and key group 23, after the completion current transformer 63, counting device 452 and time set 451 detect earth current, landing operation number and the duration being grounded every time, ground connection Indicator light 221 is lighted when single-phase earthing occurs for system, and infrared temperature probe 64 measures resistance temperature, and resistance temperature, which is higher than, is When the setting value of system, alarm module 48 starts blower 482, lights electrical resistance overheats indicator light 225, air draft indicator light 223 is in blower 482 light when opening, and select temperature sensor 471 and humidity sensor 472 as needed, when selecting environment measuring function, ring When the setting value or environment temperature that border humidity is higher than system are lower than setting value, alarm module 48 starts heater 481, heating instruction Lamp 222 is lighted, and memory module 42 saves 30 fault messages occurred recently, and data are not lost after power loss, passes through liquid crystal Display screen 21 can check failure, and watchdog circuit 43 prevents crash phenomenon, and relevant information can be transmitted to by communication interface 46 Grade monitoring system.

In summary: this resistance eutral grounding complexes are provided with current transformer 63, counting device 452, time set 451, infrared temperature probe 64, temperature sensor 471 and humidity sensor 472 can record single-phase-to-ground current size, ground connection Number is grounded time, resistor disc temperature, environment temperature and humidity, and can record landing operation number, passes through liquid crystal display 21 Parameters are set with key group 23, man-machine interface is simple to operate, full menu in Chinese, and rich display information is straight It sees, while there is communication interface 46, the information that can will test record reaches master control room, and the security reliability for running system obtains Arrived large increase, at the same also meet substation can unattended duty demand for development, heater 481 and blower 482 according to therefore Barrier takes corresponding measure, timely handling failure, and cabinet 1, panel 2 and 3 material of backboard use stainless steel plate, aesthetic in appearance, corrosion resistant Corrosion is strong, and resistance value is stablized, corrosion-resistant, good toughness is indeformable, high reliablity.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (7)

1. a kind of resistance eutral grounding complexes, including cabinet (1), it is characterised in that: the side of the cabinet (1) is connected with panel (2), the side in cabinet (1) far from panel (2) is equipped with fixed strip (11), and one end of fixed strip (11) is pacified by fixing screws Equipped with backboard (3), backboard (3) is equipped with the first terminal plate (31) and the second terminal plate (32), the first terminal plate (31) and second It is respectively connected with 16 connecting terminals (33) on terminal plate (32), control system (4) and electrical component are installed in cabinet (1) (6), the upper end of the panel (2) is equipped with liquid crystal display (21), is sequentially installed with indicator lamp groups on the panel (2) of lower section (22), it is equipped with key group (23) on the panel (2) below indicator lamp groups (22), the indicator lamp groups (22) include ground connection instruction Lamp (221) and heating lamp (222), heating lamp (222) are sequentially installed with row far from the side of grounded signal lamp (221) Wind indicator light (223), run indicator (224) and electrical resistance overheats indicator light (225), the key group (23) includes increasing key (231) acknowledgement key (233) is sequentially installed with far from the side of increasing key (231), is cancelled with reducing key (232), reducing key (232) Key (234) and reset key (235), the control system (4) include main control module (41) and memory module (42), main control module (41) it is electrically connected with memory module (42), main control module (41) is electrically connected with watchdog circuit (43) and clock module (44), ground detection module (45), context detection module (47), master control has been electrically connected in the input terminal of main control module (41) Alarm module (48) and communication interface (46), the output end of alarm module (48) has been electrically connected in the output end of module (41) Be electrically connected having heaters (481) and blower (482) by connecting terminal (33), the output end of alarm module (48) respectively with connect Ground indicator light (221) and electrical resistance overheats indicator light (225) are electrically connected, and heater (481) and blower (482) refer to heating respectively Show that lamp (222) and air draft indicator light (223) are electrically connected, the input terminal of the ground detection module (45) passes through connecting terminal (33) be electrically connected with time set (451) and counting device (452), counting device (452) and time set (451) respectively with Ground terminal is electrically connected, and the input terminal of the context detection module (47) is electrically connected with temperature sensing by connecting terminal (33) Device (471) and humidity sensor (472), the electrical component (6) include grounding transformer (61), ground resistance (62) and electric current Mutual inductor (63), grounding transformer (61), ground resistance (62) and current transformer (63) are sequentially connected in series, grounding transformer (61) It is electrically connected with main control module (41), one end ground connection of current transformer (63), current transformer (63) and ground detection module (45) it is electrically connected, the infrared measurement of temperature that face ground resistance (62) is equipped in the cabinet (1) of the side of ground resistance (62) passes Sensor (64).

2. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the main control module (41) and liquid Crystal display screen (21) is electrically connected.

3. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the main control module (41) it is defeated Enter end and is electrically connected with power end by connecting terminal (33).

4. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the type of the communication interface (46) It number is RS485, communication interface (46) is connect by connecting terminal (33) with higher level's monitoring system.

5. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the context detection module (47) It chooses whether to add as needed, heater (481) and blower (482) are apolegamy function.

6. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the cabinet (1), panel (2) It is component made of stainless steel plate material with backboard (3).

7. a kind of resistance eutral grounding complexes according to claim 1, it is characterised in that: the side of the cabinet (1) is logical It crosses hinge connection cabinet door (5), the other side of cabinet (1) is equipped with male connector switch (12), is equipped on the inside of cabinet door (5) and male connector The female that switch (12) matches switchs (51), and controller is equipped in cabinet door (5), and controller electrically connects with main control module (41) It connects.