Electrical intelligent monitoring equipment power supply system

Abstract

The utility model belongs to the technical field of intelligent monitoring, and particularly discloses a power supply system of electrical intelligent monitoring equipment. Comprising a main loop output by a unit UPS feeder screen and a plurality of sub-loops sequentially connected to the main loop, each sub-loop is provided with a switch and provides a power supply for a monitoring feeder box of one field device, each monitoring feeder box is divided into a plurality of branches with independent switches and used for supplying power to a monitoring device on the corresponding monitored field device, and the branch circuits are connected with the main loop. Adjacent sub-loops are connected through interconnection switches, and the interconnection switches are switched off during normal operation. Unified power supply of monitoring equipment scattered on the spot is achieved, the whole system is safer and more reliable, the power supply condition of the whole set of electrical intelligent equipment can be monitored in a control room, the power supply structure is clearer, and later operation maintenance and management are facilitated. The method is suitable for power supply and monitoring of power plants and power station intelligent monitoring equipment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to intelligent monitoring technical field, specifically discloses an electrical intelligent monitoring equipment power supply system. BACKGROUND

[0002] The construction intelligent power plant is the target of the high quality development of power generation enterprise. At present, for the background cabinet of intelligent detection or control equipment, because the arrangement position is relatively concentrated, unified planning UPS (AC uninterrupted power supply) power supply is adopted, but for the dispersed sensor and intelligent component, the power supply does not reach the unity. Many power plants adopt the principle of local power supply, for example, the transformer online monitoring device is powered from the transformer terminal box beside the transformer, and the GIS online monitoring device is powered from the GIS control cabinet. These local power sources are unreliable, and there is no power supply monitoring means, and when power failure or power supply line failure occurs, the control room cannot be fed back in the first time.

[0003] With the continuous development of intelligent power plant, the number and type of local sensors and intelligent components will increase continuously, and it is particularly important to set up an electrical intelligent monitoring equipment power supply system to complete the power supply and power supply monitoring of all intelligent devices in the power plant. How to realize reliable power supply of intelligent monitoring equipment without increasing too much cable cost, and have power supply monitoring ability is the problem that the technical personnel in the field urgently need to solve. UTILITY MODEL CONTENT

[0004] To solve the technical problems listed in the background art, the utility model provides an electrical intelligent monitoring equipment power supply system. The specific technical scheme is as follows:

[0005] An electrical intelligent monitoring equipment power supply system, comprising a main circuit output by a unit UPS feeder line screen and a plurality of sub-circuits sequentially connected on the main circuit, a switch is arranged on each sub-circuit, and a monitoring feeder box of a field device is provided with a power supply, each monitoring feeder box branches out a plurality of branches with independent switches, and is used for supplying power to the monitoring device on the monitored field device, and the adjacent sub-circuits are connected through a tie switch, and the tie switch is in the off state in normal operation.

[0006] Preferably, the monitoring feeder box comprises a generator online monitoring feeder box, a transformer online monitoring feeder box, a GIS online monitoring feeder box, a switch cabinet online monitoring feeder box and a monitoring host feeder box; a switch state signal acquisition device is further arranged in each monitoring feeder box, and is used for acquiring the switch state signal and switch alarm signal of each branch switch and tie switch.

[0007] Preferably, the generator online monitoring feeder box, the transformer online monitoring feeder box, the GIS online monitoring feeder box and the switch cabinet online monitoring feeder box are respectively connected with all the on-site monitoring devices of the local generator, the transformer, the GIS and the switch cabinet through cables; and the monitoring host feeder box is connected with the monitoring host arranged in the electrical relay room through a cable.

[0008] Preferably, the unit UPS feeder screen, the generator online monitoring feeder box, the transformer online monitoring feeder box, the GIS online monitoring feeder box, the switch cabinet online monitoring feeder box and the monitoring host feeder box are respectively connected with all the on-site monitoring devices of the local generator, the transformer, the GIS and the switch cabinet through cables; and the monitoring host feeder box is connected with the monitoring host arranged in the electrical relay room through a cable.

[0009] Compared with the prior art, the utility model has following advantages:

[0010] The electrical intelligent monitoring equipment power supply system provided by the utility model solves the problems of dispersed power supply of the local sensors and intelligent components of the existing local monitoring equipment and unreliable power supply, realizes unified power supply of the dispersed monitoring equipment and obtains power supply from the unit UPS, and if a power supply of a sub-circuit fails, power supply can also be obtained from an adjacent sub-circuit, so that the whole system is safer and more reliable.

[0011] The setting and dispersed arrangement of the switch device acquisition device realize the function of monitoring the power supply conditions of the whole set of electrical intelligent equipment in the control room. The feeder boxes and power supply circuits are classified and grouped according to physical positions, the power supply structure is clearer, and the later operation, maintenance and management are facilitated. Moreover, the feeder boxes are expandable, and the feeder boxes and switches can be configured according to the actual configuration of the intelligent equipment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 The electrical intelligent monitoring equipment power supply system in the embodiment of the utility model;

[0013] Fig. 2 The intelligent monitoring equipment power supply signal monitoring diagram in the embodiment of the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is described below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0015] As Figs. 1-2As shown, the utility model provides an embodiment of electrical intelligent monitoring equipment power supply system, including main circuit of UPS feeder screen output of unit and multiple sub circuits connected in sequence on main circuit, is equipped with switch on each sub circuit, provides power supply for monitoring feeder box of one field device, each monitoring feeder box divides out multiple branch lines with independent switch, is used for corresponding monitored field device on monitoring device power supply, is connected through tie -in switch between adjacent sub circuits, tie -in switch is opened in normal operation, can connect tie -in switch when sub circuit unexpected power failure, takes electricity from adjacent sub circuit, to enhance the reliability of system.

[0016] Among them, monitoring feeder box includes generator on line monitoring feeder box, transformer on line monitoring feeder box, GIS on line monitoring feeder box, switch cabinet on line monitoring feeder box, monitoring host computer feeder box;Switch state signal acquisition device is also provided in each monitoring feeder box, is used for collecting switch state signal and switch alarm signal of each branch.

[0017] Unit UPS feeder screen provides switch and cable and is connected with generator on line monitoring feeder box, transformer on line monitoring feeder box, GIS on line monitoring feeder box, switch cabinet on line monitoring feeder box, monitoring host computer feeder box and constitutes each sub circuit.

[0018] Generator on line monitoring feeder box, transformer on line monitoring feeder box, GIS on line monitoring feeder box, switch cabinet on line monitoring feeder box, monitoring host computer feeder box are composed of feeder switch and switch state acquisition device.

[0019] Switch state signal and switch alarm signal in each feeder box are connected to switch state acquisition device by hardwiring mode.Switch state acquisition device connects the information collected through optical cable to electrical monitoring system, realizes in control room monitoring entire electrical intelligent device power supply condition.

[0020] Generator on line monitoring feeder box, transformer on line monitoring feeder box, GIS on line monitoring feeder box, switch cabinet on line monitoring feeder box are connected through cable and supply power to all on site monitoring equipment distributed in generator, transformer, GIS, switch cabinet.Monitoring host computer feeder box is connected through cable and supply power to monitoring host computer uniformly arranged in electrical relay room.

[0021] Unit UPS feeder screen, generator on line monitoring feeder box, transformer on line monitoring feeder box, GIS on line monitoring feeder box, switch cabinet on line monitoring feeder box, monitoring host computer feeder box all have expandability, can configure switch according to the actual demand of power supply equipment.

[0022] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An electrical smart monitoring device power supply system, characterized by, The main circuit comprises a unit UPS feeder screen output and a plurality of sub-circuits sequentially connected to the main circuit, each sub-circuit is provided with a switch, and each monitoring feeder box is divided into a plurality of branches with independent switches for supplying power to the monitoring devices on the corresponding field equipment.

2. An electrical smart monitoring device power supply system according to claim 1, wherein, The monitoring feeder box comprises a generator online monitoring feeder box, a transformer online monitoring feeder box, a GIS online monitoring feeder box, a switch cabinet online monitoring feeder box and a monitoring host feeder box.

3. The electrical smart monitoring device power supply system of claim 1, wherein, The generator online monitoring feeder box, the transformer online monitoring feeder box, the GIS online monitoring feeder box and the switch cabinet online monitoring feeder box are respectively connected to all the local monitoring devices of the local generator, the local transformer, the local GIS and the local switch cabinet through cables; and the monitoring host feeder box is connected to the monitoring host arranged in the electrical relay room through a cable.

4. The electrical smart monitoring device power supply system of claim 1, wherein, The branches corresponding to the unit UPS feeder screen, the generator online monitoring feeder box, the transformer online monitoring feeder box, the GIS online monitoring feeder box, the switch cabinet online monitoring feeder box and the monitoring host feeder box are all expandable, and the switches can be configured according to the actual needs of the power supply equipment.

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