An automatic inspection system for power supply lines

Abstract

The utility model discloses a kind of electric power supply line automatic inspection system, including SCADA main station system, high voltage line detection controller, high voltage switch;High voltage line detection controller is connected with SCADA main station system by wireless mode communication, and high voltage line detection controller has voltage transformer, current transformer, remote signaling communication system;High voltage switch is electrically connected with high voltage line detection controller, and high voltage switch uses pole switch or pole vacuum switch.By using the above setting, flexible contact of distribution line can be realized, maintenance and outage time due to failure are reduced, line power supply reliability and distribution network operation management level are improved, line maintenance workload and operating cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of power supply line detection technology, specifically relating to an automatic inspection system for power supply lines. Background Technology

[0002] The mining and beneficiation company's main business is the mining and processing of pyrite ore, with an annual output of 1.2 million tons of pyrite concentrate with a grade of over 48%. The intelligent central power distribution room supplies power to the electrical equipment used in ore mining and processing, consuming over 100 million kWh annually. Currently, the power supply is a 6kV high-voltage overhead line, which is manually inspected. When a short circuit or other fault occurs in the overhead distribution line, the circuit breaker at the feeder outlet of the power distribution room typically trips, and power is restored after the fault is manually located and cleared. This demonstrates that the existing methods of power line inspection and fault maintenance result in a heavy workload for power distribution personnel, prolonged power outages during inspections, and low power supply reliability. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic inspection system for power supply lines, which can realize flexible communication of power distribution lines, reduce maintenance and power outage time, improve the reliability of power supply and the level of power distribution network operation and management, and reduce the workload and operating costs of line maintenance.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An automatic inspection system for power supply lines includes a SCADA master station system, a high-voltage line detection controller, and a high-voltage switch. The high-voltage line detection controller is wirelessly connected to the SCADA master station system and includes a voltage transformer, a current transformer, and a remote signaling communication system. The high-voltage switch is electrically connected to the high-voltage line detection controller and is a pole-mounted switch or a pole-mounted vacuum switch.

[0006] Furthermore, the high-voltage line detection controller adopts a DTU high-voltage line detection controller and / or an FTU high-voltage line detection controller.

[0007] Furthermore, the SCADA master station system includes a power distribution room master station and two power distribution room electronic substations that wirelessly communicate with the power distribution room master station; one of the power distribution room electronic substations wirelessly communicates with the three high-voltage line detection controllers.

[0008] Furthermore, it also includes a ring network power supply system switchgear and a distribution transformer; in one of the power distribution rooms and substations, the three high-voltage line detection controllers are respectively an FTU high-voltage line detection controller, a DTU high-voltage line detection controller, and a DTU high-voltage line detection controller, and the three high-voltage line detection controllers are respectively electrically connected to the high-voltage switch, the ring network power supply system switchgear, and the distribution transformer; in another power distribution room and substation, the three high-voltage line detection controllers are respectively an FTU high-voltage line detection controller, a DTU high-voltage line detection controller, and an FTU high-voltage line detection controller, and the three high-voltage line detection controllers are respectively electrically connected to the high-voltage switch and two of the ring network power supply system switchgears.

[0009] Furthermore, the wireless communication between the SCADA master station system and the high-voltage line detection controller can be achieved using a fiber optic communication network or a GPRS network.

[0010] Furthermore, the power distribution master station of the SCADA master station system has master station DMS software, which includes SCADA, AM / FM / GIS, automatic fault isolation and transfer system.

[0011] This utility model has the following beneficial effects:

[0012] This utility model's SCADA master station system is the core monitoring platform of the power system, responsible for remote monitoring, control, and management of power grid equipment. It enables data acquisition, remote control, fault alarm and handling, historical data storage and analysis, and collaboration with substations / terminals. The high-voltage line detection controller is an intelligent monitoring device installed on high-voltage transmission lines, used to monitor line status in real time and execute protection or control strategies. It can be used for electrical parameter monitoring, fault detection and protection, environmental monitoring, communication and data uploading, and adaptive control. High-voltage switches are electrical devices used in high-voltage circuits to connect, disconnect, or protect circuits, mainly including circuit breakers, disconnect switches, and load switches. The high-voltage line detection controller monitors the line status in real time. Upon detecting an anomaly, it triggers the high-voltage circuit breaker to trip. The SCADA master station receives fault information wirelessly, allowing the dispatcher to remotely confirm and direct fault isolation (such as switching power supply paths). Simultaneously, the high-voltage switch performs opening and closing operations to restore power to non-faulty areas, thereby achieving power grid self-healing. Compared with existing technologies that rely on manual inspections, this invention enables flexible communication of power distribution lines, reduces maintenance and power outage time, and improves the reliability of power supply and the level of operation and management of the power distribution network. Attached Figure Description

[0013] Figure 1 This is a network diagram of the detection equipment for the automatic inspection system of power supply lines of this utility model.

[0014] Figure 2 This is a diagram of the intelligent central power distribution room power distribution automation system of the automatic inspection system for power supply lines of this utility model. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Terms such as “upper,” “inner,” “middle,” “left,” “right,” and “one” used in this specification are merely for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0016] This invention addresses the problem that existing power supply lines typically rely on manual inspections for fault diagnosis, leading to a heavy workload for distribution personnel and potentially prolonged power outages. Therefore, an automatic power supply line inspection system is designed, enabling flexible communication between distribution lines, reducing maintenance and outage time, improving power supply reliability and distribution network operation and management, and lowering line maintenance workload and operating costs.

[0017] The following is a detailed description of the structure and working principle of an automatic power supply line inspection system according to this utility model:

[0018] An automatic inspection system for power supply lines, such as Figures 1 to 2 As shown, the system includes a SCADA master station system, a high-voltage line detection controller, and a high-voltage switch. The high-voltage line detection controller communicates with the SCADA master station system wirelessly and includes a voltage transformer, a current transformer, and a remote signaling communication system. The high-voltage switch is electrically connected to the high-voltage line detection controller. The high-voltage switch is either a pole-mounted switch or a pole-mounted vacuum switch. Both types of switches have the ability to interrupt short-circuit current. For faulty sections at this level, these two types of switches can complete the interruption function themselves to reduce the chance of line outages. Moreover, these two types of switches have long operating time and stable operation.

[0019] The SCADA master station system is the core monitoring platform of the power system, responsible for remote monitoring, control, and management of power grid equipment. It enables data acquisition, remote control, fault alarm and handling, historical data storage and analysis, and collaboration with substations / terminals. High-voltage line detection controllers are intelligent monitoring devices installed on high-voltage transmission lines, used to monitor line status in real time and execute protection or control strategies. They can be used for electrical parameter monitoring, fault detection and protection, environmental monitoring, communication and data uploading, and adaptive control. High-voltage switches are electrical equipment used in high-voltage circuits to connect, disconnect, or protect circuits, mainly including circuit breakers, disconnectors, and load switches. The high-voltage line detection controller monitors the line status in real time. Upon detecting an anomaly, it triggers the high-voltage circuit breaker to trip. The SCADA master station receives fault information wirelessly, allowing dispatchers to remotely confirm and direct fault isolation (such as switching power supply paths). Simultaneously, the high-voltage switches perform opening and closing operations to restore power to non-faulty areas, thereby achieving power grid self-healing. Compared with existing technologies that rely on manual inspections, this invention enables flexible communication of power distribution lines, reduces maintenance and power outage time, and improves the reliability of power supply and the level of operation and management of the power distribution network.

[0020] In this embodiment, the automatic inspection system for power supply lines also includes a ring network power supply system switch cabinet and a distribution transformer. The ring network power supply system switch cabinet is usually installed outdoors or in a distribution room to realize multi-source power supply ring network, improve power supply reliability, and contains load switches, circuit breakers, fuses, etc., some of which have protection functions; the distribution transformer is used to convert high voltage to low voltage for users, and is usually equipped with monitoring devices and redundant protection.

[0021] Meanwhile, high-voltage line detection controllers employ FTU and / or DTU high-voltage line detection controllers. FTU high-voltage line detection controllers are automated terminal equipment installed near pole-mounted switches or ring main units. Their functions include: real-time monitoring of line voltage, current, power, and other parameters; fault detection (such as short circuits) and control switch tripping to achieve fault isolation; and interaction with the main station (SCADA) via communication networks (such as 4G / fiber optics) to support remote control. DTU high-voltage line detection controllers are typically installed in automated terminals in substations, ring main units, and other similar locations. Their functions are more complex than FTUs; they include: monitoring the electrical parameters and equipment status of multiple feeders; supporting remote control, protection (such as overcurrent and grounding faults), and logic control of multiple switches; and integrating communication modules to upload data to the dispatch center.

[0022] Regarding the SCADA master station system, the system includes a power distribution master station in the distribution room, and two distribution substations in the distribution room that communicate wirelessly with the power distribution master station via fiber optic communication networks or GPRS networks. One distribution substation simultaneously communicates wirelessly with three high-voltage line detection controllers via fiber optic communication networks or GPRS networks. In one distribution substation, the three high-voltage line detection controllers are an FTU high-voltage line detection controller, a DTU high-voltage line detection controller, and a DTU high-voltage line detection controller, respectively. These three controllers are electrically connected to the high-voltage switch, the ring network power supply system switch cabinet, and the distribution transformer, respectively. In the other distribution substation, the three high-voltage line detection controllers are an FTU high-voltage line detection controller, a DTU high-voltage line detection controller, and an FTU high-voltage line detection controller, respectively. These controllers are electrically connected to the high-voltage switch and the two ring network power supply system switch cabinets, respectively.

[0023] Therefore, during operation, the FTU high-voltage line detection controller can monitor line parameters such as high voltage, current, and power in real time. It can also detect faults and control pole-mounted switches to trip, achieving fault isolation. Furthermore, it can interact with the SCADA master station system via a communication network for remote control. The DTU high-voltage line detection controller can monitor the electrical parameters and equipment status of multiple feeders and control the ring network power supply system switchgear to achieve multi-source ring network power supply. It can also control the distribution transformer to convert high voltage to low voltage for user use. Thus, the high-voltage line detection controller monitors the line status in real time, and upon detecting an anomaly, it can trigger the pole-mounted switch to trip. Through the coordinated operation of the ring network power supply system switchgear and distribution transformer, power supply to non-faulty areas is restored, achieving grid self-healing. For faulty areas, the SCADA master station receives fault information, and the dispatcher can remotely confirm and direct fault isolation (such as switching power supply paths). Therefore, it enables flexible communication of distribution lines, reduces maintenance and power outage time, and improves the reliability of line power supply and the level of distribution network operation and management.

[0024] In this embodiment, the SCADA master station system's distribution room master station has master station DMS software, which includes advanced application software such as SCADA, AM / FM / GIS, automatic fault isolation, and power transfer systems. This SCADA master station system adopts an open platform with a flexible and convenient graphical interface, allowing for vertical and horizontal integration. The SCADA master station system can realize remote measurement, remote signaling, remote control, alarm, monitoring, operation simulation, data recording and analysis of distribution lines, and has corresponding functions supported by a GIS platform. Automatic Mapping (AM), Equipment Management (FM), and Geographic Information System (GIS) can all correlate digitized power supply area maps and the geographical locations of distribution line equipment with the parameters and operating status data of the power equipment, realizing the geographicization of distribution line information, visualization and real-time operation data, facilitating the operation and management of distribution lines.

[0025] Based on the above introduction to the structure and principle of the automatic power supply line inspection system of this utility model, the following describes the specific implementation process of the automatic power supply line inspection system:

[0026] The 10 / 6kV high-voltage overhead lines managed by the intelligent central power distribution room are numbered and segmented. FTU high-voltage line detection controllers are installed at the front and rear ends of each segment to monitor the signal and fault status of the high-voltage lines. This invention integrates the power distribution master station, power distribution substation, and power distribution terminal line switches (high-voltage switches, ring network power supply system switchgear, distribution transformers) with FTU and DTU high-voltage line detection controllers to form an automated line switch system. The DTU / FTU high-voltage line detection controllers of the automated line switch continuously monitor and record the switch status, line current, voltage, etc., and calculate operating parameters such as power factor, active power, and reactive power. When abnormalities occur in the switch status or line parameters, the DTU / FTU high-voltage line detection controllers report the abnormal information to the SCADA master station system via the communication system. The SCADA master station system's DMS system polls the DTU / FTU high-voltage line detection controllers on the line at regular intervals, refreshing the real-time database with the queried information and ultimately storing it in the historical database. The dispatcher can query this data on the electrical equipment location map displayed on the main station's large screen, which is set against a regional map background. They can also directly remotely control each line switch (high-voltage switch) and change the operating mode of the automatic power supply line inspection system. When a fault occurs in a distribution line, the SCADA main station's DMS system receives fault information from the DTU / FTU high-voltage line detection controller or the distribution transformer circuit breaker, activates the fault detection, isolation, and load transfer system, and issues an alarm. It then inspects the event records and other information of the relevant DTU / FTU high-voltage line detection controller, automatically determines the fault isolation and non-faulty section load transfer schemes, performs simulation verification, and finally requests the dispatcher to remotely operate the system or for the SCADA main station's DMS system to implement the scheme automatically.

[0027] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, using ordinary technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, this utility model can also be modified, replaced or combined in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. An automatic inspection system for power supply lines, characterized in that, It includes a SCADA master station system, a high-voltage line detection controller, and a high-voltage switch; the high-voltage line detection controller communicates with the SCADA master station system wirelessly, and the high-voltage line detection controller has a voltage transformer, a current transformer, and a remote signaling communication system; the high-voltage switch is electrically connected to the high-voltage line detection controller, and the high-voltage switch is a pole-mounted switch or a pole-mounted vacuum switch.

2. The automatic inspection system for power supply lines as described in claim 1, characterized in that, The high-voltage line detection controller adopts a DTU high-voltage line detection controller and / or an FTU high-voltage line detection controller.

3. The automatic inspection system for power supply lines as described in claim 2, characterized in that, The SCADA master station system includes a power distribution room master station and two power distribution room electronic substations that wirelessly communicate with the power distribution room master station; one of the power distribution room electronic substations wirelessly communicates with the three high-voltage line detection controllers.

4. The automatic inspection system for power supply lines as described in claim 3, characterized in that, It also includes ring network power supply system switchgear and distribution transformer; in one of the power distribution rooms and substations, the three high-voltage line detection controllers are one FTU high-voltage line detection controller and two DTU high-voltage line detection controllers, and the three high-voltage line detection controllers are respectively electrically connected to the high-voltage switch, the ring network power supply system switchgear, and the distribution transformer; in the other power distribution room and substation, the three high-voltage line detection controllers are one DTU high-voltage line detection controller and two FTU high-voltage line detection controllers, and the three high-voltage line detection controllers are respectively electrically connected to the high-voltage switch and two of the ring network power supply system switchgear.

5. The automatic inspection system for power supply lines as described in claim 2, characterized in that, The wireless communication between the SCADA master station system and the high-voltage line detection controller can be achieved using a fiber optic communication network or a GPRS network.

6. The automatic inspection system for power supply lines as described in claim 1, characterized in that, The power distribution master station of the SCADA master station system has master station DMS software, which includes SCADA, AM / FM / GIS, automatic fault isolation and transfer system.

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