CN203456949U - Intelligent assembly cabinet for transformer station circuit breaker - Google Patents

Abstract

An intelligent component cabinet for a circuit breaker in a substation. It includes: the main monitoring component, the gas monitoring component and the mechanical state monitoring component; wherein: the main monitoring component is connected with the monitoring computer in the station set up on the station control layer through the optical fiber network, and at the same time communicates with the gas monitoring component and the mechanical state through the communication network in the cabinet The monitoring components are connected; the gas monitoring components are respectively connected to the gas sensors installed in the mechanism box of the circuit breaker of the substation through the analog quantity acquisition interface; the mechanical state monitoring component is connected to the state quantity sensor installed in the mechanism box of the circuit breaker. The substation circuit breaker intelligent component cabinet provided by the utility model has the following beneficial effects: 1. The information is processed centrally through the main monitoring component, and the fusion of multi-party information can more accurately understand the status of the equipment; 2. The main monitoring component is sent to The station control layer reduces the number of cables and improves transmission speed and efficiency.

Description

A substation circuit breaker intelligent component cabinet

technical field

The utility model belongs to the technical field of power substation control, in particular to an intelligent component cabinet for a circuit breaker in a substation.

Background technique

In the past, various types of monitoring sensors and corresponding professional monitoring devices were installed on high-voltage equipment (such as circuit breakers) in conventional substations to achieve state perception of high-voltage equipment and achieve the purpose of monitoring the state of high-voltage equipment. To a certain extent, the expected effect has been achieved, but there are many disadvantages in doing so:

One is that the degree of information fusion among numerous monitoring devices is poor, resulting in that although there are many monitoring parameters, it is impossible to make a comprehensive diagnosis of the status of high-voltage equipment; on the other hand, each monitoring device independently leads to cables and substation monitoring room or secondary small room Connected, with the increase in the number of monitoring devices and high-voltage equipment, the number of cables has also shown an explosive growth, which not only increases the cost and complicates the wiring, but also buryes many safety hazards to a certain extent.

In the new situation of smart grid development, there is an urgent need for a device that can integrate various sensing and monitoring devices to monitor the status of circuit breakers in a modular and standardized manner.

Contents of the invention

In order to solve the above problems, the purpose of this utility model is to provide an intelligent component cabinet for a circuit breaker in a substation.

In order to achieve the above purpose, the substation circuit breaker intelligent component cabinet provided by the utility model includes: a main monitoring component, a gas monitoring component and a mechanical state monitoring component; wherein: the main monitoring component is a circuit breaker monitoring main IED installed inside the intelligent component cabinet, It is connected to the in-station monitoring computer set on the station control layer through the optical fiber network, and at the same time connected to the gas monitoring component and the mechanical state monitoring component through the communication network in the cabinet;

The gas monitoring component is the SF ₆ monitoring IED installed inside the intelligent component cabinet, which is respectively connected to the gas sensor installed in the substation circuit breaker mechanism box through the analog quantity acquisition interface;

The mechanical state monitoring component is a circuit breaker state monitoring IED installed inside the intelligent component cabinet, which is connected with a state quantity sensor installed in the mechanism box of the circuit breaker.

The gas sensor includes a SF ₆ micro water transmitter, an SF ₆ gas pressure sensor and an SF ₆ gas concentration sensor.

The state quantity sensor includes an opening coil current transformer, a closing coil current transformer and an energy storage motor current transformer.

The intelligent component cabinet also includes: partial discharge monitoring components, expandable components, process layer communication terminal blocks and station control layer communication terminal blocks; wherein: the partial discharge monitoring components are extended monitoring components; the expandable components are reserved for expansion The position of the components; the communication terminal block of the process layer is used to connect various sensors of the process layer; the communication terminal block of the station control layer is the connection port connected with the monitoring computer in the station.

The in-cabinet communication network is composed of one of RS-485, CAN and Ethernet, and a bay layer network switch corresponding to the in-cabinet communication network is provided inside the intelligent component cabinet.

The main monitoring component provides RS-485, CAN, Ethernet communication interfaces.

The relevant sensors of the mechanical state monitoring component are arranged in the circuit breaker mechanism box, all of which are through-hole Hall sensors, connected by the process layer communication terminal block; the gas monitoring component and the SF ₆ micro-water transmitter pass through RS485 communication; both the mechanical status monitoring component 23 and the gas monitoring component communicate with the main monitoring component through the IEC61850 protocol, and the main monitoring component is connected to the optical fiber through the communication terminal block of the station control layer to upload the summarized information to the monitoring computer in the station control layer.

The substation circuit breaker intelligent component cabinet provided by the utility model has the following beneficial effects:

1. The information is processed centrally through the main monitoring component, and the fusion of multi-party information can understand the status of the equipment more accurately;

2. The main monitoring component is sent to the station control layer through the optical fiber, which reduces the number of cables and improves the transmission speed and efficiency.

Description of drawings

Fig. 1 is a composition block diagram of the substation circuit breaker intelligent component cabinet provided by the utility model.

Fig. 2 is a schematic diagram of the internal structure of the substation circuit breaker intelligent component cabinet provided by the utility model.

Detailed ways

The substation circuit breaker intelligent component cabinet provided by the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the substation circuit breaker intelligent component cabinet 2 provided by the utility model includes: a main monitoring component 21, a gas monitoring component 22 and a mechanical state monitoring component 23; wherein: the main monitoring component 21 is installed inside the intelligent component cabinet 2 The circuit breaker monitors the main IED (Intelligent Electronic Device), which is connected to the monitoring computer 1 in the station installed on the station control layer through the optical fiber network, and is connected to the gas monitoring component 22 and the mechanical status monitoring component 23 through the communication network in the cabinet;

The gas monitoring component 22 is the SF ₆ monitoring IED installed inside the intelligent component cabinet 2, which has the function of collecting various gas state quantities of the circuit breaker, and is respectively connected to the gas sensor 3 installed in the mechanism box of the circuit breaker of the substation through the analog quantity collection interface ;

The mechanical state monitoring component 23 is a circuit breaker state monitoring IED installed inside the intelligent component cabinet 2, which has the function of collecting various state quantities of the circuit breaker, and is connected with a state quantity sensor installed in the circuit breaker mechanism box.

The gas analog quantities collected by the gas monitoring component 22 include: SF ₆ gas water content, SF ₆ gas pressure, SF ₆ gas concentration, etc., and the gas sensor 3 includes SF ₆ micro water transmitter, SF _{6 gas} Gas pressure sensor and SF ₆ gas concentration sensor.

The mechanical state quantities collected by the mechanical state monitoring component 23 include: opening coil current, closing coil current, energy storage motor current, etc., and the state quantity sensors include opening coil current transformer 4, closing coil current, etc. Coil current transformer 5 and energy storage motor current transformer 6.

As shown in Figure 2, the intelligent component cabinet 2 also includes: a partial discharge monitoring component 24, an expandable component 25, a process layer communication terminal block 26 and a station control layer communication terminal block 28; wherein: a partial discharge monitoring component 24 In order to expand the monitoring component, the partial discharge of the circuit breaker can be monitored; the expandable component 25 is to reserve the position of the expansion component; the process layer communication terminal block 26 is used to connect various sensors of the process layer; the station control layer communication terminal block 28 is The connection port connected with the monitoring computer 1 in the station.

The communication network in the cabinet is constituted by one of communication networks such as RS-485, CAN, Ethernet, etc., and a compartment layer network switch 27 corresponding to the communication network in the cabinet is provided inside the intelligent module cabinet 2 for use in To realize the information exchange between the main monitoring component 21 and other monitoring IEDs.

The main monitoring component 21 provides communication interfaces such as RS-485, CAN, Ethernet, etc., and accesses the status monitoring information of the relevant monitoring device through the in-cabinet communication network of the intelligent component between it and various monitoring devices, and the monitoring device is matched The analog quantity acquisition interface has the function of connecting various analog quantities of the circuit breaker. The main monitoring component 21 in the intelligent component cabinet 2 configured near the circuit breaker realizes the collection of all state information of the circuit breaker, and realizes preliminary analysis, diagnostic function;

The main monitoring component 21 is connected to the information of various monitoring devices of the circuit breaker, and a unified IEC61850 standardized information model is established, which is connected to the station control layer network through the optical fiber network, and the intelligent component cabinet 2 located at the high-voltage equipment site and the secondary small room or Only the necessary AC and DC power supply cables and communication optical fibers are required between the substation monitoring rooms to complete the access requirements of status monitoring information from the substation circuit breaker monitoring site to the substation monitoring room.

The relevant sensors of the mechanical state monitoring assembly 23 are arranged in the circuit breaker mechanism box, all of which are through-hole Hall sensors, connected by the process layer communication terminal block 26, and communicate through electrical signals; the gas monitoring assembly 22 and the SF _{The 6} micro-water transmitters communicate through RS485. Both the mechanical status monitoring component 23 and the gas monitoring component 22 communicate with the main monitoring component 21 through the IEC61850 protocol, and the main monitoring component 21 connects the optical fiber through the communication terminal block 28 of the station control layer to upload the summarized information to the monitoring computer 1 in the station control layer .

The substation circuit breaker intelligent component cabinet provided by the utility model integrates the main monitoring component and each monitoring component, and can complete the state quantity collection, conventional quantity collection, preliminary analysis, diagnosis and data transmission functions of the circuit breaker. The intelligent component cabinet can adapt to various harsh working conditions in the place where it is placed, and has a special temperature-controlled dehumidification function to ensure the stable operation of the monitoring device in the cabinet.

Claims (7)

1. a substation breakers Intelligent component cabinet, is characterized in that: described substation breakers Intelligent component cabinet comprises: main monitoring assembly (21), gas-monitoring assembly (22) and machine performance monitoring assembly (23); Wherein: main monitoring assembly (21) is monitored main IED for being arranged on the inner circuit breaker of Intelligent component cabinet (2), its by fiber optic network be arranged on the station of station level in monitoring computer (1) be connected, by communication network in cabinet, be connected with machine performance monitoring assembly (23) with gas-monitoring assembly (22) simultaneously;

Gas-monitoring assembly (22) is for being arranged on the inner SF of Intelligent component cabinet (2) ₆monitoring IED, its by analog acquisition interface respectively be arranged on substation breakers mechanism case in gas sensor (3) be connected;

Machine performance monitoring assembly (23) is for being arranged on the inner State-Inspect of High-Voltage Circuit IED of Intelligent component cabinet (2), and it is connected with the quantity of state transducer in being arranged on circuit breaker mechanism case.

2. substation breakers Intelligent component cabinet according to claim 1, is characterized in that: described gas sensor (3) comprises SF ₆micro-water transmitter, SF ₆gas pressure sensor and SF ₆gas concentration sensor.

3. substation breakers Intelligent component cabinet according to claim 1, is characterized in that: described quantity of state transducer comprises switching winding current transformer (4), closing coil current transformer (5) and energy storage motor current transformer (6).

4. substation breakers Intelligent component cabinet according to claim 1, is characterized in that: described Intelligent component cabinet (2) inside also comprises: office put monitoring assembly (24), can extension element (25), process layer communication terminal row (26) and station level communication terminal arrange (28); Wherein: monitoring assembly (24) is put for expansion monitoring assembly in office; Can extension element (25) be the position of reserved extension element; Process layer communication terminal row (26) is for the various kinds of sensors of connection procedure layer; The connectivity port of station level communication terminal row (28) for being connected with monitoring computer (1) in station.

5. substation breakers Intelligent component cabinet according to claim 1, it is characterized in that: in described cabinet, communication network consists of a kind of among RS-485, CAN, Ethernet, is provided with the wall network switch (27) corresponding with communication network in cabinet in the inside of Intelligent component cabinet (2).

6. substation breakers Intelligent component cabinet according to claim 1, is characterized in that: described main monitoring assembly (21) provides RS-485, CAN, ethernet interface.

7. substation breakers Intelligent component cabinet according to claim 1, it is characterized in that: the related sensor of described machine performance monitoring assembly (23) is arranged in circuit breaker mechanism case, be punching Hall element, utilize process layer communication terminal row (26) access; Gas-monitoring assembly (22) and SF ₆between micro-water transmitter, by RS485, communicate by letter; Machine performance monitoring assembly (23) is all communicated by letter with main monitoring assembly (21) by IEC61850 stipulations with gas-monitoring assembly (22), and main monitoring assembly (21) connects monitoring computer (1) in the station that optical fiber is uploaded to the information through gathering station level by station level communication terminal row (28).

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