Coal mine power supply override protection system

Abstract

The utility model belongs to the technical field of electric power, and provides a coal mine power supply override protection system which comprises network equipment, a data transmission assembly and a protection control assembly which are in network connection. The network equipment and the data transmission assembly are arranged on a protection device of the coal mine power supply equipment and are used for acquiring fault data on the protection device according to the network equipment and transmitting the fault data to the protection control assembly; wherein the coal mine power supply equipment comprises a plurality of types of high-voltage power supply equipment and a plurality of types of low-voltage power supply equipment; and the protection control assembly is connected with the protection device and is used for realizing override protection according to a processing result of the fault data. By adopting the network equipment, the data transmission assembly and the protection control assembly, the information transmission accuracy of the power grid protection equipment can be ensured, override tripping caused by communication faults can be reduced, the power supply safety can be ensured, and a safe and reliable operation environment can be provided for underground coal mine power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to a coal mine power supply over-level protection system. Background Art

[0002] In the coal mine power supply system, the stability and safety of the power supply system are of vital importance. With the popularization of high-yield and high-efficiency working faces in coal mines, the application of large-capacity mobile substations and inverters has put forward higher requirements for impact current, electromagnetic interference, protection of equipment, safety, intelligence and reliability.

[0003] At present, the existing coal mine power supply system adopts protection devices. Due to the failure of the protection device itself or improper setting, the protection device may malfunction, thereby causing over-tripping, causing system failures such as short circuit and grounding; the protection of direct over-tripping of equipment has become a more prominent problem; due to the influence of the special environment of coal mines underground, some traditional power supply equipment is still used; over-tripping will not only affect the normal operation of the power system, but also cause large-scale power outages and wind outages, seriously affecting the safe production of coal mines.

[0004] Anti-overtripping protection can be an independent system or integrated with the power supply monitoring system. It is of great significance to the research on overtripping technology and overtripping protection of power supply equipment, as well as to improve the stability and safety of the power system.

[0005] User Datagram Protocol (UDP) is a connectionless and unreliable protocol. In the UDP protocol, there is no need to establish a connection with the other party before formal communication, and data can be sent directly to the receiver. The UDP protocol saves a lot of system resource consumption for network status confirmation and data confirmation during data transmission, greatly improving the transmission efficiency of the UDP protocol and the transmission speed.

[0006] Therefore, a coal mine power supply over-level protection system is needed. Utility Model Content

[0007] The technical problem to be solved by the utility model is that the protection effect of the anti-overstepping tripping of the coal mine power supply equipment is not ideal. Aiming at the deficiencies of the prior art, a coal mine power supply overstepping protection system is provided.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] A coal mine power supply skipping protection system comprises: a network device, a data transmission component and a protection control component, wherein the network device, the data transmission component and the protection control component are connected in a network; the network device and the data transmission component are arranged on a protection device of the coal mine power supply equipment, and are used to obtain fault data on the protection device according to the network device, and transmit the fault data to the protection control component; wherein the coal mine power supply equipment comprises a plurality of categories of high-voltage power supply equipment and a plurality of categories of low-voltage power supply equipment; the protection control component is connected to the protection device, and is used to realize skipping protection according to the processing result of the fault data.

[0010] Furthermore, the network equipment includes Ethernet, optical fiber, cable and Ethernet communication interface.

[0011] Furthermore, the data transmission component is a communication mechanism, which utilizes the communication component to obtain fault data on the protection device of the coal mine power supply equipment and transmits it to the protection control component.

[0012] Furthermore, the communication mechanism is configured as multiple data transmission layers to achieve fault data transmission between adjacent upper and lower layers.

[0013] Furthermore, the communication component is used to encapsulate the fault data into a UDP data packet based on the UDP communication protocol.

[0014] Furthermore, UDP data packets are transmitted between upper and lower layers, from the lower layer to multiple upper layers, and the layer values ​​are 1 to 7.

[0015] Furthermore, the protection control component includes a processor and a command execution mechanism.

[0016] Furthermore, the processor is used to receive fault data and generate control commands.

[0017] Furthermore, the command execution mechanism is a protection pressure plate, which is used to achieve cross-level protection according to the control command.

[0018] Furthermore, the processor includes a computer, and the computer includes a network debugging assistant program software for setting Ethernet parameters and testing data transmission.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects: by adopting network equipment, data transmission components and protection control components, the accuracy of information transmission of power grid protection equipment can be ensured, the over-tripping caused by communication failures can be reduced, the power supply safety can be guaranteed, and a safe and reliable operating environment can be provided for the power supply in coal mines.

[0020] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings.

[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the coal mine power supply overstepping protection system of the utility model;

[0024] Figure 2 It is a structural diagram of the network device and data transmission components of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the protection control component of the utility model. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] The utility model provides a coal mine power supply over-level protection system, such as Figures 1 to 3 As shown, it includes: network equipment, data transmission components and protection control components, and the network equipment, data transmission components and protection control components are connected to the network; the network equipment and data transmission components are arranged on the protection device of the coal mine power supply equipment, and are used to obtain the fault data on the protection device according to the network equipment, and transmit it to the protection control component; wherein the coal mine power supply equipment includes a plurality of categories of high-voltage power supply equipment and a plurality of categories of low-voltage power supply equipment; the protection control component is connected to the protection device, and is used to realize cross-level protection according to the processing result of the fault data.

[0028] Specifically, the network equipment includes Ethernet, optical fiber, cable and Ethernet communication interface.

[0029] Specifically, the data transmission component is a communication mechanism, which uses the communication component to obtain fault data on the protection device of the coal mine power supply equipment and transmits it to the protection control component.

[0030] Specifically, the communication mechanism is configured as multiple data transmission layers to realize fault data transmission between adjacent upper and lower levels. N-1 data transmission layers are configured between corresponding N protection devices to carry out fault data transmission, and finally the fault data is transmitted to the protection control component through optical fiber or cable. Among them, the coal mine power supply equipment includes multiple categories of high-voltage power supply equipment and multiple categories of low-voltage power supply equipment. The protocol used in these data transmission layers is the UDP communication protocol, which is encapsulated as a UDP data packet. The UDP data packet is transmitted from the next level to multiple upper levels between the upper and lower levels. The value of the level is 1 to 7, which can realize the transmission of data messages from one sending end to multiple receiving ends.

[0031] Specifically, the protection control component includes a processor and a command execution mechanism.

[0032] Specifically, the processor is used to realize fault data reception and control command generation. In the received fault data, when fault information appears in the lower-level protection device, if the fault information of the upper-level protection device is the same as the lower-level fault information, a protection control command is generated. According to the protection control command, the protection pressure plate is used to realize cross-level protection.

[0033] Specifically, the processor includes a computer, and the computer includes a network debugging assistant program software for setting Ethernet parameters and testing data transmission.

[0034] The operation process of the coal mine power supply over-level protection system is as follows:

[0035] The protection device on the coal mine power supply equipment is connected to the Ethernet through optical fiber, cable, and Ethernet communication interface. The Ethernet UDP protocol is used to transmit the operating data of the protection device in a multicast manner. The processor in the protection control component is used to receive multiple data transmission layers to realize the reception of fault information of fault data transmission between adjacent upper and lower levels. According to the consistent UDP fault message obtained, the faulty coal mine power supply equipment can be accurately determined, and cross-level protection can be achieved through the protection pressure plate.

[0036] The coal mine power supply over-level protection system can effectively improve the anti-over-level tripping and realize the anti-over-level tripping of the coal mine power supply equipment by broadcasting it through the UDP network protocol.

[0037] The coal mine power supply over-level protection system can realize the location of faults through information exchange between upper and lower level protection devices through the data transmission layer, and meet the action selectivity and instantaneous action requirements of the pressure plate protection.

[0038] This coal mine power supply over-level protection system is equipped with a computer. Through the network debugging assistant program software, Ethernet parameters are set and data transmission is tested. Data loss or duplication is handled automatically in the application program, and a verification algorithm is used to verify and correct the transmitted data. This can ensure the stable operation of the Ethernet and the reliability of UDP communication.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine power supply over-level protection system, characterized in that: include: Network equipment, data transmission components and protection control components, the network equipment, data transmission components and protection control components are connected through a network; The network equipment and data transmission components are arranged on the protection device of the coal mine power supply equipment, and are used to obtain the fault data on the protection device according to the network equipment, and transmit it to the protection control component; wherein the coal mine power supply equipment includes multiple categories of high-voltage power supply equipment and multiple categories of low-voltage power supply equipment; the protection control component is connected to the protection device, and is used to realize cross-level protection according to the processing results of the fault data.

2. A coal mine power supply over-level protection system according to claim 1, characterized in that: Network equipment includes Ethernet, fiber optics, cables, and Ethernet communication interfaces.

3. A coal mine power supply over-level protection system according to claim 2, characterized in that: The data transmission component is a communication mechanism, which is used to obtain fault data on the protection device of the coal mine power supply equipment by using the communication component and transmit it to the protection control component.

4. A coal mine power supply over-level protection system according to claim 1, characterized in that: The communication mechanism is configured as multiple data transmission layers to achieve fault data transmission between adjacent upper and lower layers.

5. A coal mine power supply over-level protection system according to claim 3, characterized in that: The communication component is used to encapsulate the fault data into UDP data packets based on the UDP communication protocol.

6. A coal mine power supply over-level protection system according to claim 5, characterized in that: UDP data packets are transmitted between upper and lower layers, from the lower layer to multiple upper layers, and the layer values ​​are 1 to 7.

7. A coal mine power supply over-level protection system according to claim 1, characterized in that: The protection control component includes a processor and a command execution mechanism.

8. A coal mine power supply over-level protection system according to claim 7, characterized in that: The processor is used to receive fault data and generate control commands.

9. A coal mine power supply over-level protection system according to claim 8, characterized in that: The command execution mechanism is a protection pressure plate, which is used to achieve cross-level protection according to the control command.

10. A coal mine power supply over-level protection system according to claim 7, characterized in that: A processor includes a computer.

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