CN204612833U - Based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology - Google Patents

Abstract

The utility model discloses a distributed low-voltage electrical connection point online temperature measurement system based on ZigBee technology, which is characterized in that it includes a main control room with a background detection center, a low-voltage withdrawable switchgear located in the A distribution area, and a low-voltage draw-out switchgear located in the B The low-voltage grid-connected equipment in the distribution area, the low-voltage distribution transformer in the C distribution area and the box-type substation equipment in the D distribution area, the low-voltage withdrawable switchgear, the low-voltage grid-connected equipment, the low-voltage distribution transformer, and the box-type substation equipment in the distribution area The ZigBee wireless transmitting distributed modules are respectively connected with the ZigBee wireless receiving center module in the main control room through the ZigBee wireless routing module. The utility model perceives the temperature value of the electrical connection point through the low-voltage special temperature measuring sensor, and the distributed data collector collects the temperature data, and transmits it to the background monitoring center system through the ZigBee wireless transmission network, so as to realize online display, record storage, intelligent diagnosis and monitoring of the temperature data. Call the police.

Description

Distributed low-voltage electrical connection point online temperature measurement system based on ZigBee technology

technical field

The utility model belongs to the field of low-voltage electrical equipment monitoring, and relates to a distributed online temperature measurement system for low-voltage electrical connection points based on ZigBee technology.

Background technique

With the increasing power load, the scale of national energy construction is also increasing, and new models such as distributed energy, distributed power generation, and distributed power distribution have emerged. Specifically, low-voltage electrical equipment also presents a distributed Arrangement, such as low-voltage switchgear, low-voltage grid-connected equipment, low-voltage transformers, cable distribution boxes and box transformers, etc., they are usually arranged in a decentralized and distributed layout within a power generation and distribution station area. During the long-term operation of these equipment, due to oxidation of electrical connection points, overload operation, and poor contact of connection points, the equipment or key connection points will cause long-term overheating and insulation aging. If it is not handled in time, it will cause burning or insulation breakdown in severe cases. Such accidents have a major impact on production and continuous operation of the power system.

The reason for the overheating of low-voltage electrical equipment is that the temperature rise of its connection points exceeds the standard value for a long time. It is necessary to obtain the current temperature value of the electrical connection points through certain channels and carry out timely maintenance and replacement to achieve the purpose of continuous and safe operation of electrical equipment. Due to the large number of low-voltage equipment and the distributed arrangement, the current routine regular and quantitative power outage inspection work has become a headache with heavy workload, long time consumption and many maintenance personnel. For the above situation, the market has not yet provided a better solution.

Utility model content

What the utility model aims to solve is the technical problem that the existing low-voltage electrical equipment is overheated because the temperature rise of the connecting point exceeds the standard for a long time.

In order to solve the above problems, the utility model provides a distributed low-voltage electrical connection point online temperature measurement system based on ZigBee technology. Switchgear, low-voltage grid-connected equipment located in B distribution area, low-voltage distribution transformer located in C distribution area, box-type substation equipment located in D distribution area, ZigBee wireless transmission distributed module in low-voltage withdrawable switchgear and low-voltage parallel ZigBee wireless transmitting distributed module 2 in the network equipment is respectively connected with ZigBee wireless receiving center module 1 in the main control room through ZigBee wireless routing module 1; ZigBee wireless transmitting distributed module 4 is respectively connected with ZigBee wireless receiving center module 2 in the main control room through ZigBee wireless routing module 2.

Preferably, the main control room is provided with background monitoring industrial computer and ZigBee wireless receiving center module one, ZigBee wireless receiving center module two, software real-time online monitoring system, database system, backup power supply, printer equipment, SMS alarm respectively connected therewith Unit and sound and light alarm unit.

Preferably, the low-voltage withdrawable switchgear includes connection points for busbars, connection points for moving and static contacts, connection points for cables, connection points for frame circuit breakers, connection points for knife switches, and connection points for low-voltage special The temperature measurement sensor is connected to the distributed data collector 1 and the ZigBee wireless transmission distributed module 1 in turn.

Preferably, the low-voltage grid-connected equipment includes an access contact connection point, a cable connection point, and a switchgear connection point respectively connected to the low-voltage special temperature measurement sensor two, and the low-voltage special temperature measurement sensor two is sequentially connected to the distributed data collector 2. ZigBee wireless transmission distributed module 2.

Preferably, the low-voltage distribution transformer includes a busbar connection point and a cable connection point respectively connected to the low-voltage special temperature measurement sensor three, and the low-voltage special temperature measurement sensor three is connected to the distributed data collector in turn. Three, ZigBee wireless transmission distributed Module three.

Preferably, the box-type substation equipment includes busbar connection points, moving contact connection points, cable connection points, switch connection points, knife switch connection points, and low-voltage special temperature measurement sensors that are respectively connected to four low-voltage special temperature measurement sensors. 4. Then connect the distributed data collector 4. ZigBee wireless transmission distributed module 4.

The utility model adopts a distributed structure, and the low-voltage special temperature measuring sensors in each distribution area are connected to the distributed data collector through a special shielded communication line, and the distributed data collector establishes a connection with the ZigBee wireless transmission distributed module through a wired communication network, and the ZigBee wireless The distributed transmission module transmits the collected information to the ZigBee wireless routing module through the wireless mode. The ZigBee wireless routing module processes the received information and further wirelessly transmits it to the ZigBee wireless receiving center module. The ZigBee wireless receiving center module monitors the industrial control through the communication port and the background machine connection. The background monitoring industrial computer is respectively connected to the printer equipment, SMS alarm unit, sound and light alarm unit, and backup power supply equipment, and the software is installed with a real-time online monitoring system and a database system.

The utility model can be applied to equipment in the low-voltage field, and is specially used in low-voltage field equipment, such as low-voltage switchgear, low-voltage grid-connected equipment, low-voltage transformers, cable distribution boxes and box transformers, etc. The electrical connection is sensed by a low-voltage special temperature sensor The point temperature value is connected to the distributed data collector through a dedicated line. The distributed data collector collects the temperature data transformed by the temperature sensor and transmits it to the background monitoring center system through the ZigBee wireless transmission network. The background monitoring center system realizes the temperature data. Online display, record storage, intelligent diagnosis and alarm.

The utility model has the following beneficial effects:

1. This system mainly adopts ZigBee networking technology, low power consumption and self-organized distributed data collectors to form a wireless communication network system. The wireless signals of each channel do not interfere with each other, and the temperature information of each distributed low-voltage electrical connection point is parallelized. Transparent transmission to the background monitoring center can solve problems such as difficult on-site wiring, high manpower consumption for laying cables, and strong electromagnetic interference.

2. This system solves the problem of distributed temperature measurement of low-voltage equipment. Temperature measurement sensors, distributed data collectors, and ZigBee wireless modules can be installed in different distribution areas, and different alarm values can be set according to different areas and equipment. Low-voltage electrical connection point temperature measurement occasions.

3. The system provides a variety of intelligent diagnostic techniques. All-round intelligent diagnosis of sensor presence, communication status, temperature warning, temperature alarm, and communication port failures, guiding on-site wiring, debugging, and rapid troubleshooting.

4. This system can quickly locate fault points, reduce or even cancel regular inspection work in occasions with low-voltage electrical equipment such as photovoltaic power stations, national grid substations, enterprise factory distribution stations, and distributed box-type substations, so as to achieve improvement The ultimate goal of reliability and safety of low-voltage electrical systems.

Description of drawings

Fig. 1 is a module schematic diagram of a distributed low-voltage electrical connection point online temperature measurement system based on ZigBee technology provided by the utility model.

Detailed ways

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

Example

As shown in Figure 1, a schematic diagram of a distributed low-voltage electrical connection point online temperature measurement system based on ZigBee technology provided by the utility model, including a main control room with a background detection center, a low-voltage extraction system located in the A distribution area Type switchgear, low-voltage grid-connected equipment located in B distribution area, low-voltage distribution transformer located in C distribution area, and box-type substation equipment located in D distribution area.

The main control room is equipped with a background monitoring industrial computer and ZigBee wireless receiving center module 1 and ZigBee wireless receiving center module 2 respectively connected to it, software real-time online monitoring system, database system, backup power supply, printer equipment, SMS alarm unit and sound and light alarm unit.

The low-voltage withdrawable switchgear includes busbar connection points, dynamic and static contact connection points, cable connection points, frame circuit breaker connection points, knife switch connection points, and low-voltage special temperature measurement sensors. Connect distributed data collector 1, ZigBee wireless transmission distributed module 1.

The low-voltage grid-connected equipment includes access contact connection points, cable connection points, and switchgear connection points respectively connected to the low-voltage special temperature measurement sensor 2, and the low-voltage special temperature measurement sensor 2 is connected to the distributed data collector 2 and ZigBee wireless transmission in turn. Distributed module two.

The low-voltage distribution transformer includes a busbar connection point and a cable connection point respectively connected to the low-voltage special temperature measurement sensor 3, and the low-voltage special temperature measurement sensor 3 is connected to the distributed data collector 3 and the ZigBee wireless transmission distributed module 3 in turn.

The box-type substation equipment includes busbar connection points, moving contact connection points, cable connection points, switch connection points, and knife switch connection points respectively connected to the low-voltage special temperature measurement sensors, and the low-voltage special temperature measurement sensors are connected in sequence. Type data collector 4, ZigBee wireless transmission distributed module 4.

The ZigBee wireless transmitting distributed module 1 in the low-voltage withdrawable switchgear and the ZigBee wireless transmitting distributed module 2 in the low-voltage grid-connected equipment are respectively connected to the ZigBee wireless receiving center module 1 in the main control room through the ZigBee wireless routing module 1; The ZigBee wireless transmitting distributed module 3 in the electric transformer is connected with the ZigBee wireless transmitting distributed module 4 in the box-type substation equipment respectively through the ZigBee wireless routing module 2 and the ZigBee wireless receiving center module 2 in the main control room

The utility model is applied to equipment in the low-voltage field, such as low-voltage switchgear, low-voltage grid-connected equipment, low-voltage transformers, and box-type substation equipment. The system adopts a distributed structure, including a low-voltage special temperature sensor, a distributed data collector, a ZigBee wireless transmission distributed module, a ZigBee wireless routing module, a ZigBee wireless receiving center module, and a background monitoring center system. Low-voltage special temperature measurement sensors, distributed data collectors, and ZigBee wireless transmission distributed modules are located in each distributed area, the background monitoring center system is located in the main control room, and the ZigBee wireless routing module is located in a suitable position between the corresponding distribution area and the main control room , the specific working principle is as follows:

Low-voltage special temperature sensor is installed at the busbar connection point, contact connection point, cable connection point, circuit breaker connection point and various switch connection points of low-voltage equipment, etc., automatically detects the temperature signal of the electrical connection point, and passes through the special shielded wire Connected to the distributed data collector; the distributed data collector is installed on the device body or nearby in the distributed area, and the signal transmitted by the sensor is converted into a digital signal, and connected to the ZigBee wireless transmission distribution through a wired network, such as RS485 network or Ethernet The ZigBee wireless transmission distributed module is installed near the distributed data collector, and transmits the collected information to the ZigBee wireless routing module through the wireless mode. The ZigBee wireless routing module is installed in a suitable location according to the actual situation, and it will further wirelessly transmit the received information to the ZigBee wireless receiving center module. The ZigBee wireless receiving center module is connected to the background monitoring industrial computer through the communication port; the background monitoring industrial computer is connected to the printer respectively. Equipment, SMS alarm unit, sound and light alarm unit, backup power supply equipment, and install software real-time online monitoring system and database system; software real-time online monitoring system can selectively read, process and real-time temperature data in all ZigBee wireless receiving center modules Display, intelligent diagnosis and alarm, and record the data after diagnosis and analysis in the database system for query.

Claims (6)

1. the distributed low-voltage electrical tie point In-Line Temperature Measure System based on ZigBee technology, it is characterized in that, comprise the master-control room being provided with backstage inspection center, be positioned at the low voltage draw-out switchgear of A distributive province, be positioned at the low-pressure grid-connection equipment of B distributive province, be positioned at the low voltage distribution transformer of C distributive province and be positioned at the box type transformation station equipment of D distributive province, ZigBee wireless transmit distributed module one in low voltage draw-out switchgear is connected with the ZigBee wireless receiving center module one in master-control room respectively by ZigBee wireless routing module one with the ZigBee wireless transmit distributed module two in low-pressure grid-connection equipment, ZigBee wireless transmit distributed module three in low voltage distribution transformer is connected with the ZigBee wireless receiving center module two in master-control room respectively by ZigBee wireless routing module two with the ZigBee wireless transmit distributed module four in box type transformation station equipment.

2. as claimed in claim 1 based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology, it is characterized in that, in described master-control room, be provided with backstage monitoring industrial computer and difference connected ZigBee wireless receiving center module one, ZigBee wireless receiving center module two, software real time on-line monitoring system, Database Systems, standby power supply, printer apparatus, SMS alarm unit and acousto-optic warning unit.

3. as claimed in claim 1 based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology, it is characterized in that, described low voltage draw-out switchgear comprises the busbar tie point, dynamic/static contact tie point, cable connection point, frame circuit breaker tie point, the chopper switch tie point that are connected with low pressure Special temperature sensor one respectively, and low pressure Special temperature sensor connects distributed data collector one, ZigBee wireless transmit distributed module one again and again successively.

4. as claimed in claim 1 based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology, it is characterized in that, described low-pressure grid-connection equipment comprises the access contact tie point, cable connection point, the switchgear tie point that are connected with low pressure Special temperature sensor two respectively, and low pressure Special temperature sensor two connects distributed data collector two, ZigBee wireless transmit distributed module two more successively.

5. as claimed in claim 1 based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology, it is characterized in that, described low voltage distribution transformer comprises the busbar tie point, the cable connection point that are connected with low pressure Special temperature sensor three respectively, and low pressure Special temperature sensor three connects distributed data collector three, ZigBee wireless transmit distributed module three more successively.

6. as claimed in claim 1 based on the distributed low-voltage electrical tie point In-Line Temperature Measure System of ZigBee technology, it is characterized in that, described box type transformation station equipment comprises the busbar tie point, moving contact tie point, cable connection point, switch junctions, the chopper switch tie point that are connected with low pressure Special temperature sensor four respectively, and low pressure Special temperature sensor four connects distributed data collector four, ZigBee wireless transmit distributed module four more successively.