CN112003069B - Protection measurement and control device and system - Google Patents

Abstract

The present application relates to a protection measurement and control system. By providing the heavy-duty connector, the first connection end is electrically connected to the protection measurement and control device, and the second connection end is electrically connected to the ring main unit. , to achieve the pre-electrical connection of the secondary circuit. By pre-connecting the protection measurement and control device with the first connection end, and between the ring network cabinet and the second connection end. The first connection end matches the second connection end, and when in use, only the first connection end and the second connection end need to be plugged in, and there is no need to rewire the secondary circuit . The protection measurement and control system provided by the embodiments of the present application solves the technical problem of complex installation of the current protection measurement and control device existing in the prior art, and achieves the technical effect of simplifying the installation process of the protection measurement and control device and improving the installation efficiency.

Description

Protection measurement and control devices and systems

technical field

The present application relates to the technical field of electrical equipment, and in particular, to a protection measurement and control device and system.

Background technique

Protection measurement and control device refers to electrical equipment that integrates various functions such as protection, measurement, control, monitoring, communication, event recording, fault recording, and operation error prevention in the distribution network. The protection measurement and control device can cooperate with the comprehensive operating system to complete the power station control, protection, anti-fault blocking and local functions, and can also independently complete the small and medium-scale unattended substations of 110kV and below or be used as a complete set of protection for the medium and low voltage sides of 220kV and above substations And measurement monitoring function, is a vital electrical equipment in the substation. There are a variety of monitoring and control equipment inside the protection measurement and control device. In actual installation and use, it is necessary to set up a secondary circuit on site, and use the secondary circuit to match the primary equipment. The secondary circuit is relatively complex, requiring professional staff to operate for a long time, and the current protection measurement and control device is complicated to install.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a protection measurement and control device and a system for the complex installation of the current protection measurement and control device.

A protection measurement and control system is applied to the working line of a power distribution network. The protection measurement and control system includes:

a protection measurement and control device, the input end of the protection measurement and control device is electrically connected to the working circuit, and the protection measurement and control device is used to detect and control the working state of the working circuit;

a ring network cabinet, electrically connected to the working line;

Overloaded connectors, including:

a first connection end, arranged on the outer surface of the protection measurement and control device, and electrically connected with the output end of the protection measurement and control device;

The second connection end is arranged on the surface of the ring main unit and is electrically connected with the ring main unit, and the second connection end matches the first connection end.

In one embodiment, the protection measurement and control device includes:

Protection measurement and control equipment, the input end of the protection measurement and control equipment is electrically connected with the working line, the output end of the protection measurement and control equipment is electrically connected with the first connection terminal, and the protection measurement and control equipment is used to detect and control the The working status of the working line;

The first housing has a first accommodating cavity, the first connecting end is arranged on the outer surface of the first housing, and is electrically connected with the protection measurement and control device, and the protection measurement and control device is arranged in the first housing. an accommodating cavity.

In one embodiment, the ring main unit comprises:

the second shell has a second accommodating cavity, the second connection end is disposed on the outer surface of the second shell;

A plurality of circuit breakers are arranged in the second accommodating cavity, the input ends of the circuit breakers are respectively electrically connected with the second connection ends, and the output ends of the circuit breakers are respectively connected with the working circuit electrical connection.

In one embodiment, it also includes:

A plurality of detachable components are respectively arranged on the first casing and the second casing, the first connecting end is fixed on the outer surface of the first casing through the detachable components, and the first connecting end is fixed on the outer surface of the first casing through the detachable components. The two connecting ends are fixed on the outer surface of the second housing through the detachable assembly.

In one embodiment, the protection measurement and control equipment includes:

An AC volume detection component, disposed in the first accommodating cavity, an input end of the AC volume detection component is electrically connected to the working line, and the AC volume detection component is used to detect the current and/or the current of the working line voltage signal;

The first connection end includes:

a first heavy-duty connection end for alternating current, disposed on the outer surface of the first housing, and one end of the first heavy-duty connection end for alternating current is electrically connected to the output end of the alternating current detection component;

The second connection end includes:

The second heavy-duty connection end of alternating current is arranged on the outer surface of the second housing, the second heavy-duty connection end of alternating current is electrically connected with a plurality of the circuit breakers, and the second heavy-duty connection of alternating current is connected The terminal is matched with the first AC heavy-duty connection terminal.

In one embodiment, the protection measurement and control equipment further includes:

The binary input detection component is arranged in the first accommodating cavity, the input end of the binary input detection component is electrically connected with the working circuit, and the binary input detection component is used to detect the switch of the working circuit state;

The first connection end also includes:

The first binary input heavy-duty connection end is disposed on the outer surface of the first housing, and one end of the first binary input heavy-duty connection end is electrically connected to the binary input detection component;

The second connection end also includes:

The second binary input heavy-duty connection end is disposed on the outer surface of the second housing, the second binary input heavy-duty connection end is electrically connected with a plurality of the circuit breakers, and the second binary input heavy-duty connection end is electrically connected to the circuit breakers. The heavy-duty connection end matches the first binary input heavy-duty connection end.

In one embodiment, the protection measurement and control equipment further includes:

an operation circuit, arranged in the first accommodating cavity, an input end of the operation circuit is electrically connected to the working circuit, and the operation circuit is used to perform a protection operation on the working circuit;

The first connection end also includes:

a heavy-duty connection end of the first operation loop is disposed on the outer surface of the first casing, and one end of the heavy-duty connection end of the first operation loop is electrically connected to the output end of the operation loop;

The second connection end also includes:

The second operation circuit heavy-duty connection end is disposed on the outer surface of the second housing, the second operation circuit heavy-duty connection end is electrically connected with a plurality of the circuit breakers, and the second operation circuit heavy-duty connection The terminal is matched with the heavy-duty connection terminal of the first operation loop.

In one of the embodiments, there is a first characteristic distance between adjacent pins in the first AC heavy-duty connection end and the second AC heavy-duty connection end, and the first binary input heavy-duty There is a second characteristic distance between the connection end and the adjacent pins in the second binary heavy-duty connection end, and the distance between the first operation loop heavy-duty connection end and the adjacent pins in the second operation loop heavy-duty connection end is There is a third characteristic distance between them, and the first characteristic distance, the second characteristic distance and the third characteristic distance are all unequal.

In one of the embodiments, the pins in the first AC heavy-duty connection end and the second AC heavy-duty connection end have a first characteristic height, and the first open-input heavy-duty connection end is connected to the The pins in the second binary heavy-duty connection end have a second characteristic height, the pins in the first operation circuit heavy-duty connection end and the second operation circuit heavy-duty connection end have a third characteristic height, and the The first feature height, the second feature height, and the third feature height are not equal.

In one embodiment, the first AC heavy-duty connection end and the second AC heavy-duty connection end, the first binary input heavy-duty connection end and the second binary input heavy-duty connection end , and the number of pins in the heavy-duty connection end of the first operation loop and the heavy-duty connection end of the second operation loop are not equal.

The protection measurement and control system provided in the embodiment of the present application includes: a protection measurement and control device, a ring network cabinet, and a heavy-duty connector, where the heavy-duty connector includes a first connection end and a second connection end. In the embodiment of the present application, the heavy-duty connector is provided, the first connection end is electrically connected with the protection measurement and control device, and the second connection end is electrically connected with the ring main unit, thereby realizing the secondary Pre-electrical connection of the loop. By pre-connecting the protection measurement and control device with the first connection end, and between the ring network cabinet and the second connection end. The first connection end matches the second connection end, and when in use, only the first connection end and the second connection end need to be plugged in, and there is no need to rewire the secondary circuit . The protection measurement and control system provided by the embodiments of the present application solves the technical problem of complex installation of the current protection measurement and control device existing in the prior art, and achieves the technical effect of simplifying the installation process of the protection measurement and control device and improving the installation efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the traditional technology, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or the traditional technology. Obviously, the drawings in the following description are only the For some embodiments of the application, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a protection measurement and control system provided by an embodiment of the present application;

2 is a schematic structural diagram of a heavy-duty connector of a protection measurement and control system provided by an embodiment of the present application;

3 is a schematic structural diagram of a protection measurement and control device provided by an embodiment of the present application;

4 is a schematic structural diagram of a ring network cabinet provided by an embodiment of the present application;

5 is a schematic structural diagram of a protection measurement and control system provided by an embodiment of the present application;

6 is a schematic structural diagram of a protection measurement and control system provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a protection measurement and control system according to an embodiment of the present application.

Description of reference numbers:

10. Protection measurement and control system;

100. Protection measurement and control device;

110. Protection of measurement and control equipment;

111. AC volume detection component;

112. Binary input detection component;

113. Operation loop;

120. The first shell;

200. Ring network cabinet;

210. The second shell;

220, circuit breaker;

300. Overload connector;

310. A first connection end;

311. The first AC heavy-duty connection terminal;

312. The first binary input heavy-duty connection end;

313. The first operation loop overload connection terminal;

320. The second connection end;

321. The second AC heavy-duty connection terminal;

322. The second binary input heavy-duty connection terminal;

323. The second operation loop overload connection terminal.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the following embodiments will further describe a protection measurement and control device and system of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections). In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description , rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the present application.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The embodiment of the present application provides a protection measurement and control system 10, which can be applied to a working line in a distribution network. The distribution network can be a high-voltage distribution network or a low-voltage distribution network, and the working line can be The working circuit of any electrical equipment, such as the working circuit of primary equipment or the working circuit of secondary equipment, etc., is used to detect and control the working state of the working circuit.

Please refer to FIG. 1 . An embodiment of the present application provides a protection measurement and control system 10 , including a protection measurement and control device 100 , a ring main unit 200 , and a heavy-duty connector 300 .

The input end of the protection measurement and control device 100 can be electrically connected to the working line, and the protection measurement and control device 100 is used for detecting and controlling the working state of the working line. The protection measurement and control device 100 refers to an electrical device that integrates various functions such as protection, measurement, control, monitoring, communication, event recording, fault recording, and operation error prevention. The output end of the protection measurement and control device 100 can also be connected with a joyo series integrated operating system, etc. to cooperate to complete other functions such as control, protection, and anti-misoperation locking of the working circuit. The protection, measurement and control device 100 can also independently perform a small and medium-scale unattended substation of 110kv and below, or serve as a complete set of protection and measurement monitoring functions for the medium and low voltage sides of a substation of 220kv and above. The protection, measurement and control device 100 can be installed in a distributed manner on site, or can be installed in a centralized panel, and is an ideal intelligent device for forming a comprehensive automation system for power plants such as substations and power plants. This embodiment does not limit the type, model, etc. of the protection measurement and control device 100, and only needs to satisfy the function of detecting and controlling the working state of the working line.

The ring network cabinet 200 refers to a switch cabinet in each distribution branch, such as an outlet switch cabinet. The bus bar of the switch cabinet is a part of the ring trunk line, that is, the ring trunk line is a ring trunk line formed by connecting the bus bars of a plurality of outgoing switch cabinets. The rated current of the ring main unit 200 is generally not too large. Therefore, the switchgear in the ring main unit 200 is generally a relatively simple device, such as a high-voltage load switch with a high-voltage fuse. The load switch operates the normal current, and the fuse is used to cut off the short-circuit current. The load switch and the fuse can be combined to replace the circuit breaker 220 to perform the function of the circuit breaker 220 within a certain capacity. The ring network cabinet 200 can also be installed in a power distribution system with a non-ring network structure, and used as a high-voltage switch cabinet mainly composed of load switches. This embodiment does not make any limitation on the type and model of the ring network cabinet 200, and can be selected according to the actual situation.

The heavy-duty connector 300 is also known as HDC heavy-duty connector, aviation plug. The heavy-duty connector 300 includes a male plug and a female plug. The heavy-duty connector 300 can be pre-installed, especially in complex or complex circuits, which can greatly improve the installation efficiency of equipment and reduce wiring. error rate. At the same time, when multiple heavy-duty connectors are used, the modular structure of each functional module of the equipment can be realized conveniently and efficiently, so that the equipment can be conveniently transported, installed, maintained and repaired. The heavy-duty connector 300 has a high degree of protection, such as IP65, IP67, etc., which has great advantages in a device connection system in a harsh environment. At the same time, the heavy-duty connector 300 can provide effective protection in harsh environments, provide a highly integrated connection for equipment, and improve the effective utilization of equipment control through different combinations. Referring to FIG. 2 , the heavy-duty connector 300 includes: a first connection end 310 and a second connection end 320 .

The first connection terminal 310 is disposed on the outer surface of the protection measurement and control device 100, and is electrically connected to the output end of the protection measurement and control device 100. The protection measurement and control device 100 needs to be pre-connected to the ring network cabinet 200 The line connected to the first connection end 310 forms a pre-connected first secondary circuit. The second connection end 320 is disposed on the surface of the ring main unit 200 and is electrically connected to the ring main unit 200. The second connection end 320 is matched with the first connection end 310 to connect the ring The network cabinet 200 needs to connect the line connected with the protection measurement and control device 100 to the second connection terminal 320 in advance to form a pre-connected second secondary circuit. The second connection end 320 is matched with the first connection end 310, and the first connection end 310 and the second connection end 320 are connected to realize the protection measurement and control device 100 and the The electrical connection between the ring network cabinets 200 also realizes the electrical connection between the first secondary circuit and the second secondary circuit, without the need for on-site wiring to perform the wiring of the secondary circuit .

The working principle of the protection measurement and control system 10 provided in the embodiment of the present application is as follows:

The protection measurement and control system 10 provided in the embodiment of the present application includes: a protection measurement and control device 100, a ring network cabinet 200, and a heavy-duty connector 300. The heavy-duty connector 300 includes a first connection end 310 and a second connection end 320. The first connection end 310 is electrically connected to the protection measurement and control device 100 , and the second connection end 320 is electrically connected to the ring main unit 200 . The first connection end 310 is matched with the second connection end 320. When in use, the first connection end 310 and the second connection end 320 are plugged in, and the protection and measurement and control device 100 is electrically connected. Signals enter the ring main unit 200 through the first connection end 310 and the second connection end 320 in sequence, and the ring main unit 200 acts according to the received electrical signal to control the working line Purpose of work status.

The protection measurement and control system 10 provided in the embodiment of the present application includes: a protection measurement and control device 100 , a ring network cabinet 200 , and a heavy-duty connector 300 . The heavy-duty connector 300 includes a first connection end 310 and a second connection end 320 . In this embodiment of the present application, by providing the heavy-duty connector 300 , the first connection end 310 is electrically connected to the protection measurement and control device 100 , and the second connection end 320 is electrically connected to the ring main unit 200 . , to achieve the pre-electrical connection of the secondary circuit. By pre-connecting the protection measurement and control device 100 with the first connection end 310 , and between the ring main unit 200 and the second connection end 320 . The first connection end 310 is matched with the second connection end 320, and when in use, only the first connection end 310 and the second connection end 320 need to be plugged in, and there is no need for a second connection. Rewiring of loops. The protection measurement and control system 10 provided by the embodiment of the present application solves the technical problem of the complex installation of the protection measurement and control device 100 existing in the prior art, and achieves the technical effect of simplifying the installation process of the protection measurement and control device 100 and improving the installation efficiency .

Referring to FIG. 3 , in one embodiment, the protection measurement and control device 100 includes: a protection measurement and control device 110 and a first housing 120 .

The input end of the protection measurement and control device 110 is electrically connected to the working line, and the output end of the protection measurement and control device 110 is electrically connected to the first connection end 310. The protection measurement and control device 110 is used to detect and control the The working status of the working line. The protection measurement and control device 110 may include: an AC volume detection component 111, an input volume detection component 112, a power supply detection component and an operation circuit 113, etc. The AC volume detection component 111, the binary input volume detection component 112, the The operation loop 113 and the power detection component and the like are respectively connected to the working circuit to collect different state parameters of the working circuit. This embodiment does not make any limitation on the protection measurement and control device 110, which can be specifically set according to the actual situation, and only needs to satisfy the function of collecting different state parameters of the working line.

The first housing 120 has a first accommodating cavity, the first connecting end 310 is disposed on the outer surface of the first housing 120 , and the first connecting end 310 can be embedded in the first housing The outer surface of the first shell 120 may also be fixed to the outer surface of the first casing 120 . The protection measurement and control device 110 is disposed in the first accommodating cavity, and the first connection end 310 is electrically connected to the protection measurement and control device 110 . The first housing 120 may be made of any metal material, such as iron, copper, steel, alloy, and the like. The first housing 120 may be square, rectangular, cylindrical, or any other shape. This embodiment does not impose any limitations on the first housing 120, which can be specifically set according to the actual situation. The first accommodating cavity may only have the function of providing an installation space for the protection measurement and control device 110 .

Referring to FIG. 4 , in one embodiment, the ring main unit 200 includes: a second housing 210 and a circuit breaker 220 .

The second casing 210 has a second accommodating cavity, the second connecting end 320 is disposed on the outer surface of the second casing 210 , and the second connecting end 320 can be embedded in the second casing The outer surface of the second casing 210 may also be fixed to the outer surface of the second casing 210 . The second housing 210 may be made of any metal material, such as iron, copper, steel, alloy, and the like. The second housing 210 may be square, rectangular, cylindrical, or any other shape. The second housing 210 is not limited in this embodiment, and can be specifically set according to the actual situation. The second accommodating cavity may only have the function of providing installation space for the plurality of circuit breakers 220 . The circuit breaker 220 is disposed in the second accommodating cavity, and the second connection end 320 is electrically connected to the circuit breaker 220 . The number of the circuit breakers 220 may be one or more. When there are multiple circuit breakers 220 , the multiple circuit breakers 220 are all disposed in the second accommodating cavity, and the input ends of the multiple circuit breakers 220 are electrically connected to the second connection ends 320 respectively. , the output ends of the plurality of circuit breakers 220 are respectively electrically connected to the working lines. The plurality of circuit breakers 220 may be the same or different, and the plurality of circuit breakers 220 may be connected to different nodes of the working line respectively to control the connection and disconnection of different positions of the working line, or may be connected to multiple circuit breakers. different said working lines to control the connection and disconnection of different said working lines. The plurality of circuit breakers 220 may be high-voltage circuit breakers 220 or low-voltage circuit breakers 220, which are not limited in this embodiment, and may be selected according to actual conditions.

In one embodiment, the protection measurement and control system 10 further includes: detachable components.

The number of the detachable components may be multiple, and a plurality of the detachable components are respectively disposed on the first casing 120 and the second casing 210 , and the first connecting end 310 is detachable through the detachable components. The assembly is fixed on the outer surface of the first casing 120 , and the second connecting end 320 is fixed on the outer surface of the second casing 210 through the detachable assembly. The detachable components may be screws and bolts, or isolation pins, screws and screw holes, etc., so as to facilitate the installation and removal of the first connection end 310 and the second connection end 320 .

Referring to FIG. 5 , in one embodiment, the protection measurement and control device 110 includes an AC volume detection component 111 , the first connection end 310 includes a first AC volume heavy-duty connection end 311 , and the second connection end 320 includes The second AC load connection terminal 321 .

The AC volume detection component 111 is disposed in the first accommodating cavity, the input end of the AC volume detection component 111 is electrically connected to the working circuit, and the AC volume detection component 111 is used to detect the working circuit. current and/or voltage signals. The AC quantity detection component 111 may include a current transformer and a voltage transformer, and the current transformer and the voltage transformer are both arranged in the first accommodating cavity, and are respectively electrically connected to the working line when in use. connected to collect the current signal and voltage signal of the working line.

The first AC heavy-duty connection terminal 311 is disposed on the outer surface of the first housing 120 , and one end of the first AC heavy-duty connection terminal 311 is electrically connected to the output terminal of the AC detection component 111 . . The second AC heavy-duty connection end 321 is disposed on the outer surface of the second housing 210 , and the second AC heavy-duty connection end 321 is electrically connected to a plurality of the circuit breakers 220 . The second AC heavy-duty connection end 321 matches the first AC heavy-duty connection end 311 , and the first AC heavy-duty connection end 311 and the second heavy-duty AC connection end 321 are mutually connected. The matching together constitutes the AC heavy-duty connector, and the pins of the AC heavy-duty connector can be arranged in a double row. When the load connection terminals are separated, the secondary side loop of the current transformer can be automatically sealed. The AC heavy-duty connector may be a rectangular connector to avoid overvoltage caused by the current mutual inductance secondary circuit.

Referring to FIG. 6 , in one embodiment, the protection measurement and control device 110 includes a binary input detection component 112 , the first connection end 310 includes a first binary input heavy-duty connection end 312 , and the second connection end 320 includes a second binary input heavy-duty connection 322 .

The binary input detection component 112 is disposed in the first accommodating cavity, the input end of the binary input detection component 112 is electrically connected with the working circuit, and the binary input detection component 112 is used to detect the The switch status of the working line. The on/off quantity may be: on-off on the hand-closing circuit breaker in the same period, on-off on the spring accumulator, on-off on the latching recloser, and the like. This embodiment does not impose any limitation on the binary input detection component 112, which can be selected or set according to the actual situation, and only needs to satisfy the function of realizing the detection of the binary input.

The first binary input heavy-duty connection end 312 is disposed on the outer surface of the first housing 120 , and one end of the first binary input heavy-duty connection end 312 is electrically connected to the binary input detection component 112 . The second heavy-duty connection ends 322 are disposed on the outer surface of the second housing 210 , and the second heavy-duty connection ends 322 are electrically connected to the circuit breakers 220 respectively. The second binary heavy-duty connection end 322 is matched with the first binary heavy-duty connection end 312 , and the second binary heavy-duty connection end 322 is matched with the first binary heavy-duty connection end 322 The connection ends 312 together constitute the binary input heavy-duty connector, and the pins of the binary input heavy-duty connector can adopt 32 cores in two rows side by side, so as to connect more binary input detection points and expand all the The detection range of the binary input.

Referring to FIG. 7 , in one embodiment, the protection measurement and control device 110 includes an operation loop 113 , the first connection end 310 includes a first operation loop overload connection end 313 , and the second connection end 320 includes a second connection end 320 . The operating loop overload connection 323.

The operation circuit 113 is disposed in the first accommodating cavity, the input end of the operation circuit 113 is electrically connected with the working circuit, and the operation circuit 113 is used to perform a protection operation on the working circuit. The operation loop 113 refers to the loops such as hand close, hand jump, remote jump, etc. in the working circuit, and the working circuit is controlled by the hand close, the hand jump, the remote jump, etc. When overvoltage occurs in the working line, protection actions such as tripping are started. This embodiment does not make any limitation on the operation circuit 113, and only needs to satisfy the function of realizing the protection operation on the working circuit.

The first operation circuit heavy-duty connection terminal 313 is disposed on the outer surface of the first housing 120 , and one end of the first operation circuit heavy-duty connection terminal 313 is electrically connected to the output terminal of the operation circuit 113 . The second operation circuit heavy-duty connection end 323 is disposed on the outer surface of the second housing 210 , and the second operation circuit heavy-duty connection end 323 is electrically connected to a plurality of the circuit breakers 220 . The second operation loop heavy-duty connection end 323 is matched with the first operation loop heavy-duty connection end 313 , and the first operation loop heavy-duty connection end 313 and the second operation loop heavy-duty connection end 323 are common The operation circuit heavy-duty connector is formed, the operation circuit heavy-duty connector can be a rectangular heavy-duty connector, and the pins of the rectangular heavy-duty connector can use four rows of 64 pins side by side to facilitate access Different operating loops.

In one embodiment, there is a first characteristic distance between adjacent pins in the first AC heavy-duty connection end 311 and the second AC heavy-duty connection end 321 , for example, 13.5 mm. There is a second characteristic distance between the adjacent pins in the first binary heavy-duty connection end 312 and the second binary heavy-duty connection end 322, for example, can be 5.08mm, the first operation circuit is heavy-duty There is a third characteristic distance between the connecting end 313 and the adjacent pins in the heavy-duty connecting end 323 of the second operation loop, which may be, for example, 5.10 mm. The first characteristic distance, the second characteristic distance, and the third characteristic distance are all unequal, so as to prevent the AC heavy-duty connector, the binary input heavy-duty connector, and the operation circuit from overloading. The mis-insertion between the load connectors will cause the wrong connection of the circuit, causing the occurrence of unsafe accidents.

In one embodiment, the pins in the first AC heavy-duty connection end 311 and the second AC heavy-duty connection end 321 have a first characteristic height, which may be, for example, 9 mm. The pins in the first binary heavy-duty connection end 312 and the second binary heavy-duty connection end 322 have a second characteristic height, for example, can be 7.62 mm, and the first operation loop heavy-duty connection end 313 The pins in the heavy-duty connection end 323 with the second operating loop have a third characteristic height, which may be, for example, 8.62 mm. The first feature height, the second feature height, and the third feature height are all unequal to prevent the AC heavy-duty connector, the binary input heavy-duty connector, and the operating circuit from being overloaded. The mis-insertion between the load connectors will cause the wrong connection of the circuit, causing the occurrence of unsafe accidents.

In one embodiment, the number of pins of the first AC heavy-duty connection end 311 and the second AC heavy-duty connection end 321 are both a first value, and the first binary input heavy-duty connection end The number of pins of 312 and the second binary input heavy-duty connection end 322 are both the second value, and the number of pins of the first operation loop heavy-duty connection end 313 and the second operation circuit heavy-duty connection end 323 are the second value. Three numerical values, the first numerical value, the second numerical value and the third numerical value are not equal. For example, the AC heavy-duty connector may be 26 pins, the binary heavy-duty connector may be 32 pins, and the operation circuit heavy-duty connector may be 64 pins, which can effectively prevent the AC heavy-duty connector Mis-insertion among the connector, the heavy-duty heavy-duty connector of the binary input and the heavy-duty connector of the operation circuit causes the misconnection of the circuit, and causes the occurrence of unsafe accidents.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. The utility model provides a protection system of observing and controling which characterized in that is applied to the working line of distribution network, protection system of observing and controling includes:

the input end of the protection measurement and control device is electrically connected with the working line, and the protection measurement and control device is used for detecting and controlling the working state of the working line;

the ring main unit is electrically connected with the working line;

a heavy duty connector comprising:

the first connecting end is arranged on the outer surface of the protection measurement and control device and is electrically connected with the output end of the protection measurement and control device;

the second connecting end is arranged on the surface of the ring main unit and is electrically connected with the ring main unit, and the second connecting end is matched with the first connecting end;

the first connecting end is connected to a line which is required to be connected with the ring main unit by the protection measurement and control device to form a first secondary loop, and the second connecting end is connected to a line which is required to be connected with the protection measurement and control device by the ring main unit to form a second secondary loop;

the first connecting end and the second connecting end can be mutually spliced, and under the condition that the first connecting end and the second connecting end are mutually spliced, the first secondary loop and the second secondary loop are electrically connected, so that an electric signal of the protection measurement and control device sequentially passes through the first connecting end and the second connecting end to enter the ring main unit, and the ring main unit acts according to the received electric signal to control the working state of the working circuit.

2. The protection, measurement and control system according to claim 1, wherein the protection, measurement and control device comprises:

the input end of the protection measurement and control equipment is electrically connected with the working line, the output end of the protection measurement and control equipment is electrically connected with the first connecting end, and the protection measurement and control equipment is used for detecting and controlling the working state of the working line;

the first shell is provided with a first accommodating cavity, the first connecting end is arranged on the outer surface of the first shell and electrically connected with the protection measurement and control equipment, and the protection measurement and control equipment is arranged in the first accommodating cavity.

3. The protection measurement and control system according to claim 2, wherein the ring main unit comprises:

the second shell is provided with a second accommodating cavity, and the second connecting end is arranged on the outer surface of the second shell;

a plurality of circuit breakers, set up in the second holds the cavity, a plurality of circuit breakers's input respectively with the second link electricity is connected, a plurality of circuit breakers's output respectively with the working line electricity is connected.

4. The protection, measurement and control system of claim 3, further comprising:

the first connecting end is fixed on the outer surface of the first shell through the detachable components, and the second connecting end is fixed on the outer surface of the second shell through the detachable components.

5. The protection, measurement and control system according to claim 3, wherein the protection, measurement and control device comprises:

the alternating current quantity detection assembly is arranged in the first accommodating cavity, the input end of the alternating current quantity detection assembly is electrically connected with the working line, and the alternating current quantity detection assembly is used for detecting current and/or voltage signals of the working line;

the first connection end includes:

the first alternating current weight load connection end is arranged on the outer surface of the first shell, and one end of the first alternating current weight load connection end is electrically connected with the output end of the alternating current detection assembly;

the second connection end includes:

the second exchanges heavy load link, set up in the surface of second casing, the second exchanges heavy load link and a plurality of the circuit breaker electricity is connected, the second exchanges heavy load link with first exchanges heavy load link phase-match.

6. The protection, measurement and control system of claim 5, wherein the protection, measurement and control device further comprises:

the input end of the input amount detection assembly is electrically connected with the working circuit, and the input amount detection assembly is used for detecting the on-off state of the working circuit;

the first connection end further includes:

the first input-amount heavy-load connecting end is arranged on the outer surface of the first shell, and one end of the first input-amount heavy-load connecting end is electrically connected with the input-amount detection assembly;

the second connection end further includes:

the second is opened and is gone into volume heavy load link, set up in the surface of second casing, the second is opened and is gone into volume heavy load link and a plurality of the circuit breaker electricity is connected, the second is opened and is gone into volume heavy load link with first division volume heavy load link phase-match.

7. The protection, measurement and control system of claim 6, wherein the protection, measurement and control device further comprises:

the operation loop is arranged in the first accommodating cavity, the input end of the operation loop is electrically connected with the working line, and the operation loop is used for performing protection operation on the working line;

the first connection end further includes:

the first operation circuit heavy-load connecting end is arranged on the outer surface of the first shell, and one end of the first operation circuit heavy-load connecting end is electrically connected with the output end of the operation circuit;

the second connection end further includes:

the second operation circuit heavy load connecting end is arranged on the outer surface of the second shell, the second operation circuit heavy load connecting end is electrically connected with the circuit breakers in a plurality of numbers, and the second operation circuit heavy load connecting end is matched with the first operation circuit heavy load connecting end.

8. The protection measurement and control system according to claim 7, wherein a first characteristic distance is provided between adjacent pins in the first alternating current heavy load connection end and the second alternating current heavy load connection end, a second characteristic distance is provided between adjacent pins in the first input heavy load connection end and the second input heavy load connection end, a third characteristic distance is provided between adjacent pins in the first operation loop heavy load connection end and the second operation loop heavy load connection end, and the first characteristic distance, the second characteristic distance and the third characteristic distance are different.

9. The protection measurement and control system according to claim 7, wherein the pins in the first and second ac load heavy-load connection ends have a first characteristic height, the pins in the first and second open load heavy-load connection ends have a second characteristic height, the pins in the first and second operation circuit heavy-load connection ends have a third characteristic height, and the first, second and third characteristic heights are different.

10. The protection measurement and control system according to claim 7, wherein the first AC load heavy-load connection end and the second AC load heavy-load connection end, the first input load heavy-load connection end and the second input load heavy-load connection end, and the number of the pins in the first operation circuit heavy-load connection end and the second operation circuit heavy-load connection end are different.

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