Electricity utilization acquisition system of mine power supply and distribution system

Abstract

The utility model relates to a power utilization acquisition system of a mine power supply and distribution system, which comprises a plurality of data terminals, the data terminals are connected with a serial server through 485 lines, the serial server is connected with looped network switches through network cables, and the looped network switches are sequentially connected according to geographic positions of substations to form a looped network structure. The core switch is arranged in a ground central machine room and is connected with the looped network switch through an optical cable; the core switch is also connected with a command center through a wireless signal; comprehensive protection systems of a main power distribution station and all substations are connected with the core switch through network cables, alarm signals of the comprehensive protection systems are uploaded to the industrial personal computer through the core switch and the network cables, and control signals of the industrial personal computer are returned and transmitted along the same path, so that the collection work of power utilization data is greatly facilitated, and the feedback frequency of the data is increased; the abnormal condition reporting speed is high, and the feedback time is short; remote local control is realized, and emergency power-off risk avoiding can be remotely controlled.

Description

Technical Field

[0001] This utility model belongs to the field of power system data automation technology, specifically relating to a power consumption acquisition system for a mine power supply and distribution system. Background Technology

[0002] As a key hub in the power system, substations undertake important tasks such as voltage transformation, power distribution, and transmission. The power supply and distribution structure of mines, both above and below ground, is complex. It typically includes at least one ground command center located in the management area for remote monitoring of mine facilities; at least one main substation on the surface of the mine to connect to various underground substations; and several functional rooms underground, which house corresponding application equipment, with the power supply to the functional room substations.

[0003] Traditional mine power systems suffer from problems such as aging equipment, low automation, and inefficient operation and maintenance.

[0004] In mine safety management, electricity consumption recording is crucial and essential. Many problems can be reflected through electricity consumption data. Currently, for underground equipment, workers need to go down into the mine every 5-10 days to record electricity meter readings and create a log. Our 35kV underground mining substation supplies power to all processes in the underground mining project. The underground ventilation, drainage, and hoisting systems are all Class I electrical loads, making the stable operation of the substation particularly important. To implement power supply equipment and energy consumption management, personnel are stationed at the substation 24 hours a day. The 35kV underground mining substation has four distribution rooms: one 35kV distribution room, two 10kV distribution rooms, and one capacitor room, located on the first and second floors respectively. On-site personnel are required to record the electricity meter data for each line every hour and conduct a comprehensive substation inspection every two hours to ensure data collection and prevent equipment malfunctions. Any hidden dangers in the power supply and distribution system discovered during inspections require the dispatch of appropriate personnel to the site for handling.

[0005] The existing technology for mine power supply and distribution management has the following defects: 1) High manpower input: A large number of staff are required to be on duty and conduct repeated regular inspections; 2) Large information error: Whether the risk of the power supply and distribution system can be judged normally requires staff to have certain professional experience, and there are situations where risks cannot be identified and information is missed; 3) Untimely fault detection and handling: Some problems in the power supply and distribution system develop in a short period of time, but in the existing management mechanism, equipment problems can only be discovered during inspections, and the handling personnel must also go to the site to solve them, which has a lag problem. Utility Model Content

[0006] The technical problem this invention aims to solve is that existing power supply and distribution management equipment suffers from inconvenient information access, untimely feedback, and untimely processing.

[0007] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0008] A power consumption acquisition system for a mine power supply and distribution system, the mine power supply and distribution system including a main power distribution station located on the ground and several functional rooms located underground, each functional room being equipped with a substation;

[0009] The power consumption data acquisition system includes several first data terminals installed in the main substation to reflect the power consumption of various functional circuits; and second data terminals installed in the substation to reflect the power consumption of various electrical equipment; the first and second data terminals are connected to the command center via a network; the network includes:

[0010] A serial port server, connected to a first or second data terminal via an RS-485 cable, is used to convert message data from the data terminal into network signals.

[0011] Ring network switches are installed in substations and are connected to serial servers via network cables. The ring network switches are connected sequentially according to the geographical location of the substation to form a ring network structure.

[0012] The core switch is located in the ground central computer room and includes a first core switch and a second core switch connected together. The first core switch is connected to a ring network switch in the ring network structure that is geographically adjacent to it via optical fiber. The second core switch is connected to another ring network switch in the ring network structure. The first core switch or the second core switch is also connected to the ring network switch in the main substation via cable.

[0013] The industrial control computer is located in the command center and is connected to the second core switch via fiber optic cable;

[0014] The integrated protection systems of the main substation and each substation are connected to the core switch via network cables. The alarm signals of the integrated protection system are transmitted to the industrial control computer via the core switch and network cables, and the control signals of the industrial control computer are transmitted back along the same route.

[0015] Compared with the prior art, the advantages of this utility model adopting the above solution are:

[0016] 1) The command center can remotely acquire the operating status and power data of substation equipment via the network, eliminating the need for staff to go to the site to read meters, greatly facilitating data collection. 2) Remote data extraction increases the frequency of data feedback, enabling the command center to detect equipment problems more promptly and reducing the frequency of manual inspections and maintenance. 3) The integrated protection system synchronizes alarm signals to the command center via the network, ensuring rapid reporting and feedback of abnormal situations; the command center can also directly and remotely control on-site access points via the network for emergency power outages to mitigate risks, ensuring the safety of the power supply and distribution system. Through real-time monitoring and remote control, the substation's operational efficiency is significantly improved.

[0017] As a preferred option, a further technical solution to the above structure is:

[0018] In the main power distribution station, the first data terminal is connected to the serial port server via an RS-485 line, the serial port server is connected to the photoelectric converter via a network cable, and the photoelectric converter is connected to the first core switch or the second core switch via an optical fiber.

[0019] The beneficial effects obtained from the above features are as follows: In this example, based on the automatic collection of power consumption data of each branch power equipment, the power consumption records of the main power supply node are further collected, so that the branch and main power consumption data can be mutually verified, which is conducive to power consumption data analysis.

[0020] The first and second data terminals are the electricity meter, DC power supply unit, and integrated protection system.

[0021] The beneficial effects obtained from the above features are as follows: electricity meters and DC power supplies, as devices that directly reflect electricity consumption, are the main devices that need to be checked in daily inspections, and collecting their data can meet the needs of electricity data analysis; the integrated protection system can synchronize abnormal electricity signals to the command center, so that the central dispatch can directly obtain the information and handle it in a timely manner, and can also realize emergency shutdown control of local circuits, effectively ensuring electricity safety.

[0022] The first and second core switches are configured with a power acquisition system VLAN, and each ring network switch is configured with a corresponding VLAN interface. The serial port server is connected to the power acquisition system VLAN interface.

[0023] The beneficial effects obtained from the above features are: through VLAN segmentation and data encryption, the security and reliability of data transmission are ensured. Attached Figure Description

[0024] Figure 1 This is a basic network structure diagram of this utility model;

[0025] Figure 2 This is a schematic diagram of the network distribution of this utility model;

[0026] Figure 3 This is a diagram illustrating an embodiment of the substation connection network of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal network structure of the substation according to this utility model;

[0028] Figure 5 This is a schematic diagram of the internal network structure of the main substation.

[0029] Explanation of reference numerals in the attached diagram: 101, First data terminal; 102, Second data terminal; 2, Serial port server; 3, Ring network switch; 4, Core switch; 41, First core switch; 42, Second core switch; 5, Command center; 6, Main substation; 7, Optical cable; 8, Central computer room; 9, Integrated protection system; 10, Optical-electric converter. Detailed Implementation

[0030] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0031] To achieve intelligent management of mines and eliminate the need for manual meter reading, this utility model provides a remote control and monitoring system for substations. The specific development steps are as follows:

[0032] I. Analysis and Research on Existing Equipment: Conduct a comprehensive analysis and research on the existing equipment in each substation to identify the key equipment that needs to be connected to the remote control system. Electricity meters and DC power supply panels in substations are the main equipment that needs to be checked in daily inspections as they directly reflect the electricity consumption. Collecting data from electricity meters and DC power supply panels can meet the basic needs of electricity consumption data analysis, but it is not limited to collecting the terminal values ​​of these two data points.

[0033] II. Develop a renovation plan: Based on the analysis results, develop a detailed renovation plan, including equipment access methods, data transmission paths, network configuration, etc.

[0034] Thirdly, for details, see [link / reference]. Figures 1 to 5 The specific solution provided by this utility model is as follows:

[0035] A power consumption acquisition system for a mine power supply and distribution system, the mine power supply and distribution system including a main power distribution station 6 located on the ground and several functional rooms located underground, each functional room being equipped with a substation.

[0036] The power consumption data acquisition system includes a number of first data terminals 101 installed in the main substation 6 to reflect the power consumption of various functional circuits; and a second data terminal 102 installed in the substation to reflect the power consumption of various electrical equipment; the first data terminals 101 and the second data terminals 102 are connected to the command center 5 via a network.

[0037] The network includes:

[0038] Serial server 2 is connected to the first data terminal 101 or the second data terminal 102 via an RS-485 cable and is used to convert the message data of the data terminal into network signals.

[0039] Ring switch 3 is installed in the substation and is connected to serial server 2 via network cable. Each ring switch 3 is connected in sequence according to the geographical location of the substation to form a ring network structure.

[0040] The core switch 4 is located in the ground central computer room 8 and includes a first core switch 41 and a second core switch 42 connected together. The first core switch 41 is connected to a ring network switch 3 in a nearby ring network structure via optical fiber 7. The second core switch 42 is connected to another ring network switch 3 in the ring network structure. The first core switch 41 or the second core switch 42 is also connected to the ring network switch 3 in the main substation 6 via cable.

[0041] The industrial control computer is located in the command center 5 and is connected to the second core switch 42 via optical fiber.

[0042] The main substation 6 and the integrated protection system 9 of each substation are connected to the core switch 4 via network cables. The alarm signals of the integrated protection system 9 are uploaded to the industrial control computer through the core switch and network cables, and the control signals of the industrial control computer are returned via the same route.

[0043] Due to the complex underground structure, an absolutely circular connection of ring network structures is not suitable for actual mining operations. Therefore, the ring network structure in this scheme is not a sequentially connected absolute ring. In some adjacent chambers, chambers at different elevations, or geographically unsuitable for sequential connection, a star network structure is also incorporated. See Figure 3 The power consumption data is sent from ring network switch 4#, and normally goes through ring network switch 7# to the first core switch 41. If a fault occurs at any point on this line and the signal cannot be delivered, ring network switch 4# can also go to the second core switch 42 from 3# and 1#. The two core switches (41 and 42) communicate with each other, so that each node in the ring network has a path on both the left and right sides. This structure can ensure signal transmission when a section of the line is faulty.

[0044] In the ring network structure described in this scheme, the ring switch 3 connecting the first core switch 41 and the ring switch 3 connecting the second core switch 42 are located in the ring network with a similar number of nodes spaced on the left and right sides. The distances of these two paths are not much different, which ensures the signal speed.

[0045] See Figure 5In the main power distribution station 6, the first data terminal 101 is connected to the serial port server 2 via an RS-485 line, the serial port server 2 is connected to the photoelectric converter 10 via a network cable, and the photoelectric converter 10 is connected to the first core switch 41 or the second core switch 42 via an optical fiber 7.

[0046] This utility model's system includes substation field equipment, specifically including but not limited to electricity meter 1021, DC power supply 1022, and integrated protection system 1023; it also includes RS-485 lines, serial server 2, ring network switch 3, core switch 4, and command center 5 (industrial control computer), etc. These components are connected via wired or wireless means to form a complete remote control and monitoring system. The following is a detailed description of the selection of each device:

[0047] Serial Server 2: The selected serial server is the KND C2000-B2-UJE1601-CB1 model. This device has 16 RS-485 / 422 / 232 serial ports, supports multiple baud rates and data bit configurations, and can convert serial data into Ethernet data for convenient remote access and control.

[0048] Core Switch 4: The core switch selected is the SICOM 6448G-4XG-20G28GE model. This switch has 48 Gigabit Ethernet ports, 4 10 Gigabit Ethernet ports, and 20G stacking bandwidth. It supports advanced functions such as VLAN segmentation, link aggregation, and port mirroring to ensure efficient and secure data transmission.

[0049] Ring Switch 3: The SICOM 6432G ring switch is selected. This switch has 32 Gigabit Ethernet ports, supports ring network structures, and can ensure reliable data transmission in the event of a single point of failure.

[0050] Electricity Meter 1021: Selects a smart meter that supports the RS-485 communication protocol and can output electricity data in real time.

[0051] After the system is built, the serial server 2, core switch 4, and ring network switch 3 need to be configured and debugged. This includes setting VLAN partitioning rules, configuring routing tables, and setting port security policies. The first core switch 41 and the second core switch 42 are configured with a VLAN for the power consumption data acquisition system. Each ring network switch 3 is configured with a corresponding VLAN interface, and the serial server 2 is connected to the power consumption data acquisition system VLAN interface.

[0052] During commissioning, it is essential to ensure normal communication between all devices and that data packets can be transmitted and received correctly. Simultaneously, the system's stability and reliability must be tested to ensure it meets the requirements for remote control and monitoring of substations in practical applications.

[0053] Key devices such as electricity meters 1021 and DC power supply units 1022 are connected to serial server 2 via RS-485 cables. Before connection, it is necessary to ensure that the communication parameters of each electricity meter 1021 (such as baud rate set to 2400) are consistent with those of serial server 2. Serial server 2 converts the data to Ethernet transmission. The Conexant serial server converts the received data from electricity meters 1021 into Ethernet data packets and outputs them to ring network switches 3 through its Ethernet port. Each ring network switch 3 transmits the received data packets to core switch 4 via optical signals. VLANs (Virtual Local Area Networks) are separately defined on core switch 4. During transmission, core switch 4 classifies data packets into the corresponding VLANs according to VLAN division rules to ensure data transmission security and isolation. Finally, the ground core switch 4 connects to the industrial control computer of command center 5 via Ethernet, enabling command center 5 to receive, process, and display the operating status and power data of substation equipment in real time, realizing online monitoring, remote control, and power statistics of substation equipment.

[0054] During system operation, regular maintenance and inspection of the equipment are necessary to promptly identify and address faults or anomalies. As technology continues to advance, system upgrades and optimizations are also required to improve system performance and security.

[0055] Maintenance personnel can remotely obtain equipment operating parameters and status information, promptly identify potential faults, and perform remote maintenance and repairs. This significantly reduces the on-site workload of maintenance personnel, improves maintenance efficiency, and lowers maintenance costs.

[0056] Smart grids require substations to have stronger information exchange capabilities and intelligent control functions. Remote substation upgrades achieve information sharing and collaborative work between substations and dispatch centers, as well as other substations, through the construction of high-speed communication networks. For example, in the case of distributed energy integration, substations can monitor the operating status of distributed power sources in real time and optimize scheduling and control, promoting the stable operation of the smart grid.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A power consumption acquisition system for a mine power supply and distribution system, wherein the mine power supply and distribution system includes a main power distribution station (6) located on the ground and several functional rooms located underground, each functional room being equipped with a substation; The power consumption data acquisition system includes a number of first data terminals (101) in the main substation (6) for reflecting the power consumption of each functional circuit; and a second data terminal (102) in the substation for reflecting the power consumption of various electrical equipment; the first data terminals (101) and the second data terminals (102) are connected to the command center (5) via a network. Its features are, The network includes: The serial port server (2) is connected to the first data terminal (101) or the second data terminal (102) via an RS-485 line, and is used to convert the message data of the data terminal into network signals. The ring network switch (3) is set up in the substation and is connected to the serial port server (2) via a network cable. Each ring network switch (3) is connected in sequence according to the geographical location of the substation to form a ring network structure. The core switch is located in the ground central computer room (8) and includes a first core switch (41) and a second core switch (42) connected together. The first core switch (41) is connected to a ring network switch (3) in a nearby ring network structure via an optical cable (7). The second core switch (42) is connected to another ring network switch (3) in the ring network structure. The first core switch (41) or the second core switch (42) is also connected to the ring network switch (3) in the main substation (6) via a cable. The industrial control computer is located in the command center (5) and is connected to the second core switch (42) via optical fiber; The main power distribution station (6) and the integrated protection system (9) of each substation are connected to the core switch via network cable. The alarm signal of the integrated protection system (9) is uploaded to the industrial control computer through the core switch and network cable, and the control signal of the industrial control computer is returned and transmitted back along the original path.

2. The power consumption acquisition system for a mine power supply and distribution system according to claim 1, characterized in that: In the main power distribution station (6), the first data terminal (101) is connected to the serial port server (2) via an RS-485 line, the serial port server (2) is connected to the photoelectric converter (10) via a network cable, and the photoelectric converter (10) is connected to the first core switch (41) or the second core switch (42) via an optical cable (7).

3. The power consumption acquisition system for a mine power supply and distribution system according to claim 1, characterized in that: The first data terminal (101) and the second data terminal (102) are the electricity meter, DC power supply and integrated protection system (9).

4. The power consumption acquisition system for a mine power supply and distribution system according to claim 1, characterized in that: The first core switch (41) and the second core switch (42) are configured with a power acquisition system VLAN. Each ring network switch (3) is configured with a corresponding VLAN interface. The serial port server (2) is connected to the power acquisition system VLAN interface.

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