Online monitoring and state maintenance system for electrical equipment

Abstract

The utility model discloses an electrical equipment on-line monitoring and state maintenance system which comprises a generator on-line monitoring system, a transformer on-line monitoring system, a sealing bus on-line monitoring system, a GIS on-line monitoring system and a monitoring diagnosis network. The generator on-line monitoring system, the transformer on-line monitoring system, the sealing bus on-line monitoring system and the GIS on-line monitoring system are respectively connected to the monitoring diagnosis network. And a monitoring and diagnosis engineer station and a server are configured on the monitoring and diagnosis network. According to the electrical equipment on-line monitoring and state maintenance system of the utility model, the networking and analysis of underlying data are utilized, and therefore, regular maintenance time can be formulated, maintenance cost can be reduced, abnormal equipment can be diagnosed, and economic benefits can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment monitoring and maintenance, in particular to an electrical equipment online monitoring and status maintenance system. Background Art

[0002] Most of the online monitoring equipment for thermal power plants and compressed air energy storage power stations are provided by primary equipment suppliers, which can provide complete underlying data for equipment monitoring.

[0003] How to make good use of the data provided by the online monitoring systems of various equipment to determine equipment abnormalities, predict equipment failures, and perform maintenance before failures occur, that is, arrange maintenance plans based on the health status of the equipment, etc., requires building a plant-wide data platform for comprehensive processing and analysis. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide an online monitoring and status maintenance system for electrical equipment. The system utilizes the networking and analysis of underlying data to achieve the establishment of regular maintenance time, reduce maintenance costs, diagnose abnormal equipment, and improve economic benefits.

[0005] To achieve the above-mentioned purpose, the utility model designs an online monitoring and condition inspection system for electrical equipment, including an online monitoring system for generators, an online monitoring system for transformers, an online monitoring system for mother-sealing enclosures, a GIS online monitoring system and a monitoring and diagnosis network. The online monitoring system for generators, the online monitoring system for transformers, the online monitoring system for mother-sealing enclosures and the GIS online monitoring system are respectively connected to the monitoring and diagnosis network; the monitoring and diagnosis network is configured with a monitoring and diagnosis engineer station and a server.

[0006] As a preferred implementation, the generator online monitoring system includes a generator online monitoring background, a stator partial discharge monitoring unit, a shaft current and shaft voltage monitoring unit, a winding end vibration monitoring unit, an insulation overheating monitoring unit, a rotor turn-to-turn short circuit monitoring unit, a power angle meter monitoring unit, a negative sequence meter monitoring unit, a winding and core vibration monitoring unit, and a hydrogen state monitoring unit;

[0007] The generator online monitoring background is electrically connected to the stator partial discharge monitoring unit, the shaft current and shaft voltage monitoring unit, the winding end vibration monitoring unit, the insulation overheating monitoring unit, the rotor turn-to-turn short circuit monitoring unit, the power angle meter monitoring unit, the negative sequence meter monitoring unit, the winding and core vibration monitoring unit and the hydrogen status monitoring unit through a field bus.

[0008] As a preferred implementation, the transformer online monitoring system includes a transformer online monitoring background, a core grounding current monitoring unit, a core DC bias magnetic monitoring unit, a transformer partial discharge monitoring unit, a winding optical fiber temperature monitoring unit, an oil gas monitoring unit, and a high-voltage bushing monitoring unit;

[0009] The transformer online monitoring background is electrically connected to the core grounding current monitoring unit, the core DC bias magnetic monitoring unit, the transformer partial discharge monitoring unit, the winding optical fiber temperature monitoring unit, the oil gas monitoring unit, and the high-voltage bushing monitoring unit through a field bus.

[0010] As a preferred implementation, the sealing mother online monitoring system includes a sealing mother online monitoring background, a sealing mother hydrogen / temperature and humidity monitoring unit, a sealing mother pressure monitoring unit, a sealing mother far-infrared monitoring unit, and a sealing mother partial discharge monitoring unit;

[0011] The sealing mother online monitoring background is electrically connected to the sealing mother hydrogen / temperature and humidity monitoring unit, the sealing mother pressure monitoring unit, the sealing mother far-infrared monitoring unit, and the sealing mother partial discharge monitoring unit through a field bus.

[0012] As a preferred implementation, the GIS online monitoring system includes a GIS online monitoring background, a GIS partial discharge monitoring unit, an SF6 pressure micro-water monitoring unit, a circuit breaker mechanical characteristics monitoring unit, and a lightning arrester monitoring unit;

[0013] The GIS online monitoring background is electrically connected to the GIS partial discharge monitoring unit, the SF6 pressure micro-water monitoring unit, the circuit breaker mechanical characteristic monitoring unit, and the lightning arrester monitoring unit through a field bus.

[0014] As a preferred implementation, the monitoring and diagnosis network is connected to the plant MIS system.

[0015] As a preferred implementation, the electrical equipment online monitoring and status inspection system is arranged in a thermal power plant or a compressed air energy storage power station.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] Firstly, the online monitoring and status inspection system for electrical equipment of the utility model adopts a two-layer device (field layer and management layer) and a one-layer network structure; the field layer device adopts the field bus as the data acquisition network; the management layer device completes the database management and data monitoring and analysis functions; the network adopts a dedicated monitoring and diagnosis network; the present invention can realize clear and reasonable regular inspection time intervals through the collection and analysis of equipment status data; reduce the time consumption of inspection, reduce the cost of inspection, and reduce the risk of inspection.

[0018] Secondly, the monitoring and diagnosis network of the electrical equipment online monitoring and condition maintenance system of the utility model is equipped with a dedicated monitoring and diagnosis engineer station and server, which can judge the equipment status and make maintenance suggestions through data processing.

[0019] Thirdly, the electrical equipment online monitoring and condition inspection system of the utility model can diagnose various abnormalities of the equipment and take necessary early intervention measures, thus extending the life cycle of the equipment and improving the economic benefits of the enterprise;

[0020] Fourthly, the electrical equipment online monitoring and condition maintenance system of the utility model performs analysis on the basis of the operation collection database to provide support for optimizing design, manufacturing and operation.

[0021] Fifthly, the electrical equipment online monitoring and condition inspection system of the utility model can ensure trouble-free, safe and reliable operation of the equipment, and effectively exert the functions and maximum design capabilities of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an electrical equipment online monitoring and condition maintenance system of the utility model;

[0023] In the figure, 1-generator online monitoring system, 101-generator online monitoring background, 102-stator partial discharge monitoring unit, 103-axis current and axis voltage monitoring unit, 104-winding end vibration monitoring unit, 105-insulation overheating monitoring unit, 106-rotor turn-to-turn short-circuit monitoring unit, 107-power angle meter monitoring unit, 108-negative sequence meter monitoring unit, 109-winding and core vibration monitoring unit, 110-hydrogen state monitoring unit, 2-transformer online monitoring system, 201-transformer online monitoring background, 202-core grounding current monitoring unit, 203-core DC bias magnetic monitoring unit, 204-transformer partial discharge monitoring unit, 205-winding optical fiber measurement Temperature monitoring unit, 206-gas in oil monitoring unit, 207-high-voltage bushing monitoring unit, 3-seal mother online monitoring system, 301-seal mother online monitoring background, 302-seal mother hydrogen / temperature and humidity monitoring unit, 303-seal mother pressure monitoring unit, 304-seal mother far-infrared monitoring unit, 305-seal mother partial discharge monitoring unit, 4-GIS online monitoring system, 401-GIS online monitoring background, 402-GIS partial discharge monitoring unit, 403-SF6 pressure micro-water monitoring unit, 404-circuit breaker mechanical characteristics monitoring unit, 405-lightning arrester monitoring unit, 5-monitoring and diagnosis network, 6-monitoring and diagnosis engineer station, 7-server, 8-factory MIS system. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with specific embodiments, but those skilled in the art will understand that the following embodiments are part of the present invention, not all of the embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. "Disposed" indicates a way of existence, which can be a connection method such as connection, installation, fixed connection, active connection, etc. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] like Figure 1 As shown, an online monitoring and condition inspection system for electrical equipment of the utility model is arranged in a thermal power plant or a compressed air energy storage power station, including an online monitoring system 1 for a generator, an online monitoring system 2 for a transformer, an online monitoring system 3 for a sealing mother, an online monitoring system 4 for a GIS, and a monitoring and diagnosis network 5. The online monitoring system 1 for the generator, the online monitoring system 2 for the transformer, the online monitoring system 3 for the sealing mother, and the online monitoring system 4 for a GIS are respectively connected to the monitoring and diagnosis network 5; a monitoring and diagnosis engineer station 6 and a server 7 are configured on the monitoring and diagnosis network 5. The monitoring and diagnosis network 5 is connected to the plant and station MIS system 8 as an important branch of the plant and station information system.

[0028] The generator online monitoring system 1 includes a generator online monitoring background 101, a stator partial discharge monitoring unit 102, a shaft current and shaft voltage monitoring unit 103, a winding end vibration monitoring unit 104, an insulation overheating monitoring unit 105, a rotor turn-to-turn short-circuit monitoring unit 106, a power angle meter monitoring unit 107, a negative sequence meter monitoring unit 108, a winding and core vibration monitoring unit 109, and a hydrogen state monitoring unit 110; the generator online monitoring background 101 is electrically connected to the stator partial discharge monitoring unit 102, the shaft current and shaft voltage monitoring unit 103, the winding end vibration monitoring unit 104, the insulation overheating monitoring unit 105, the rotor turn-to-turn short-circuit monitoring unit 106, the power angle meter monitoring unit 107, the negative sequence meter monitoring unit 108, the winding and core vibration monitoring unit 109, and the hydrogen state monitoring unit 110 through a field bus.

[0029] The transformer online monitoring system 2 includes a transformer online monitoring background 201, a core grounding current monitoring unit 202, a core DC bias magnetic monitoring unit 203, a transformer partial discharge monitoring unit 204, a winding optical fiber temperature measurement monitoring unit 205, an oil-gas monitoring unit 206, and a high-voltage bushing monitoring unit 207; the transformer online monitoring background 201 is electrically connected to the core grounding current monitoring unit 202, the core DC bias magnetic monitoring unit 203, the transformer partial discharge monitoring unit 204, the winding optical fiber temperature measurement monitoring unit 205, the oil-gas monitoring unit 206, and the high-voltage bushing monitoring unit 207 through a field bus.

[0030] The mother sealing online monitoring system 3 includes a mother sealing online monitoring background 301, a mother sealing hydrogen / temperature and humidity monitoring unit 302, a mother sealing pressure monitoring unit 303, a mother sealing far-infrared monitoring unit 304, and a mother sealing partial discharge monitoring unit 305; the mother sealing online monitoring background 301 and the mother sealing hydrogen / temperature and humidity monitoring unit 302, the mother sealing pressure monitoring unit 303, the mother sealing far-infrared monitoring unit 304, and the mother sealing partial discharge monitoring unit 305 are electrically connected through a field bus.

[0031] The GIS online monitoring system 4 includes a GIS online monitoring background 401, a GIS partial discharge monitoring unit 402, an SF6 pressure micro-water monitoring unit 403, a circuit breaker mechanical characteristics monitoring unit 404, and a lightning arrester monitoring unit 405; the GIS online monitoring background 401 is electrically connected to the GIS partial discharge monitoring unit 402, the SF6 pressure micro-water monitoring unit 403, the circuit breaker mechanical characteristics monitoring unit 404, and the lightning arrester monitoring unit 405 through a field bus.

[0032] The electrical equipment online monitoring and status inspection system of the present invention adopts a two-layer device (field layer, management layer) and a one-layer network structure. The field layer device uses the field bus as the data acquisition network; the management layer device completes the database management and data monitoring and analysis functions; the network adopts a dedicated monitoring and diagnosis network. The monitoring and diagnosis network is equipped with a dedicated monitoring and diagnosis engineer station and server, and realizes the functions of judging the equipment status and proposing maintenance suggestions by processing the data.

[0033] The electrical equipment online monitoring and status inspection system of the present invention can realize the online monitoring and status inspection functions of electrical equipment in power plants and compressed air energy storage power stations. The monitoring and diagnosis network is an open network. Other online monitoring devices in the plant and station can be connected to the monitoring and diagnosis network. The generator online monitoring system, transformer online monitoring system, motherboard online monitoring system, and GIS online monitoring system all retain independent online monitoring backgrounds as backup means. The purpose is that when the upper network is temporarily unavailable, the monitoring platform of each device can still independently read the monitoring information of the corresponding system. During normal operation, it only needs to be operated through the maintenance and diagnosis engineer station.

[0034] The above are only specific implementation methods of the present invention. It should be pointed out that any changes or substitutions that can be easily thought of by any technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention, and the rest not described in detail belong to the prior art.

Claims

1. An electrical equipment online monitoring and condition maintenance system, characterized in that: The invention comprises an online generator monitoring system (1), an online transformer monitoring system (2), an online motherboard monitoring system (3), an online GIS monitoring system (4) and a monitoring and diagnosis network (5); the online generator monitoring system (1), the online transformer monitoring system (2), the online motherboard monitoring system (3) and the online GIS monitoring system (4) are respectively connected to the monitoring and diagnosis network (5); and the monitoring and diagnosis network (5) is provided with a monitoring and diagnosis engineer station (6) and a server (7).

2. The electrical equipment online monitoring and condition maintenance system according to claim 1 is characterized in that: The generator online monitoring system (1) comprises a generator online monitoring background (101), a stator partial discharge monitoring unit (102), a shaft current and shaft voltage monitoring unit (103), a winding end vibration monitoring unit (104), an insulation overheat monitoring unit (105), a rotor turn-to-turn short circuit monitoring unit (106), a power angle meter monitoring unit (107), a negative sequence meter monitoring unit (108), a winding and core vibration monitoring unit (109), and a hydrogen state monitoring unit (110); The generator online monitoring backend (101) is electrically connected to a stator partial discharge monitoring unit (102), an axis current and axis voltage monitoring unit (103), a winding end vibration monitoring unit (104), an insulation overheat monitoring unit (105), a rotor turn-to-turn short circuit monitoring unit (106), a power angle meter monitoring unit (107), a negative sequence meter monitoring unit (108), a winding and core vibration monitoring unit (109), and a hydrogen state monitoring unit (110) via a field bus.

3. The electrical equipment online monitoring and condition maintenance system according to claim 1 is characterized in that: The transformer online monitoring system (2) comprises a transformer online monitoring background (201), an iron core grounding current monitoring unit (202), an iron core DC bias magnetic monitoring unit (203), a transformer partial discharge monitoring unit (204), a winding optical fiber temperature measurement monitoring unit (205), an oil gas monitoring unit (206), and a high-voltage bushing monitoring unit (207); The transformer online monitoring backend (201) is electrically connected to the core grounding current monitoring unit (202), the core DC bias magnetic monitoring unit (203), the transformer partial discharge monitoring unit (204), the winding optical fiber temperature measurement monitoring unit (205), the oil gas monitoring unit (206), and the high-voltage bushing monitoring unit (207) via a field bus.

4. The electrical equipment online monitoring and condition maintenance system according to claim 1 is characterized in that: The sealing mother online monitoring system (3) comprises a sealing mother online monitoring background (301), a sealing mother hydrogen / temperature and humidity monitoring unit (302), a sealing mother pressure monitoring unit (303), a sealing mother far-infrared monitoring unit (304), and a sealing mother partial discharge monitoring unit (305); The sealing mother online monitoring background (301) is electrically connected to the sealing mother hydrogen / temperature and humidity monitoring unit (302), the sealing mother pressure monitoring unit (303), the sealing mother far-infrared monitoring unit (304), and the sealing mother partial discharge monitoring unit (305) through a field bus.

5. The electrical equipment online monitoring and condition maintenance system according to claim 1 is characterized in that: The GIS online monitoring system (4) comprises a GIS online monitoring background (401), a GIS partial discharge monitoring unit (402), an SF6 pressure micro-water monitoring unit (403), a circuit breaker mechanical characteristic monitoring unit (404), and a lightning arrester monitoring unit (405); The GIS online monitoring background (401) is electrically connected to the GIS partial discharge monitoring unit (402), the SF6 pressure micro-water monitoring unit (403), the circuit breaker mechanical characteristic monitoring unit (404), and the lightning arrester monitoring unit (405) via a field bus.

6. The electrical equipment online monitoring and condition maintenance system according to any one of claims 1 to 5, characterized in that: The monitoring and diagnosis network (5) is connected to the plant MIS system (8).

7. The electrical equipment online monitoring and condition maintenance system according to any one of claims 1 to 5, characterized in that: The electrical equipment online monitoring and status inspection system is arranged in a thermal power plant or a compressed air energy storage power station.

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