CN212031997U

CN212031997U - Automatic control system of hydropower station

Info

Publication number: CN212031997U
Application number: CN202021016638.1U
Authority: CN
Inventors: 邓继辉; 颜毅; 罗峰; 刘洋呈; 喻胜洋
Original assignee: Sichuan Zhuoyue Xinneng Technology Co ltd
Current assignee: Sichuan Zhuoyue Xinneng Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-11-27
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to a hydropower station automatic control system, a main monitoring center and a plurality of sub-control centers, wherein the sub-control centers comprise a monitoring system, a control system and an Ethernet switch, the monitoring system comprises a plurality of cameras, a water level monitoring sensor and an energy-saving lamp, a memory and an MCU, the cameras, the water level monitoring sensor, the energy-saving lamp and the memory are respectively and electrically connected with the MCU, the control system comprises a PLC controller, hydraulic pressure speed regulator, install the temperature sensor on the generator, install rotary encoder on the hydraulic turbine, current transformer and smart electric meter, hydraulic pressure speed regulator, temperature sensor, rotary encoder and smart electric meter are connected with the PLC controller electricity respectively, current transformer installs on the output of generator and is connected with the smart electric meter electricity, MCU and PLC controller electricity are connected and respectively through ethernet switch and total supervisory control center communication connection. The utility model discloses a normal operating of branch accuse center management and control power station need not to stay on the spot, uses manpower sparingly resource.

Description

Automatic control system of hydropower station

Technical Field

The utility model relates to a water and electricity technical field especially relates to a hydropower station automation control system.

Background

China is rich in hydroelectric resources, and in order to reasonably utilize water resources, China builds a large number of small hydropower stations for power generation, water storage and the like, so that the water and electricity utilization requirements of peripheral areas are met.

The existing hydropower station construction sites are remote and not suitable for long-term standing of workers, so that a hydropower station control system is required to be modified to automatically operate, unattended standing is realized, human resources are liberated, and long-term production and operation of the hydropower station are ensured.

SUMMERY OF THE UTILITY MODEL

On the basis, the automatic control system for the hydropower station is necessary to provide aiming at the condition that the existing hydropower station needs personnel to be left on guard for a long time, the normal operation of various production and maintenance devices of the hydropower station can be automatically controlled through the sub-control center, the monitoring system is arranged to monitor the operation condition of the hydropower station in real time and feed the operation condition back to the main monitoring center, the personnel is not needed to be left on the spot, and the human resources are saved.

An automatic control system of a hydropower station comprises a main monitoring center and a plurality of sub-control centers, wherein each sub-control center comprises a monitoring system, a control system and an Ethernet switch, the monitoring system comprises a plurality of cameras, a water level monitoring sensor, an energy-saving lamp, a memory and an MCU, the camera, the water level monitoring sensor, the energy-saving lamp and the memory are respectively and electrically connected with the MCU, the control system comprises a PLC controller, a hydraulic speed regulator, a temperature sensor arranged on a generator, a rotary encoder arranged on a water turbine, a current transformer and an intelligent ammeter, the hydraulic speed regulator, the temperature sensor, the rotary encoder and the intelligent electric meter are respectively and electrically connected with the PLC controller, the current transformer is installed on the output end of the generator and electrically connected with the intelligent electric meter, and the MCU and the PLC are electrically connected and are respectively in communication connection with the master monitoring center through the Ethernet switch.

Preferably, an RS485 interface for communication connection with the PLC controller is provided on the ethernet switch.

Preferably, the control system also comprises a blower for air cooling the generator, and the blower is electrically connected with the PLC.

Preferably, the control system further comprises a display device, and the display device is electrically connected with the PLC and the MCU.

The utility model discloses an useful part lies in: 1. the operation of one hydropower station is correspondingly controlled by using the sub-control centers, and the master monitoring center is communicated with a plurality of sub-control centers, so that the operation conditions of the plurality of hydropower stations are conveniently monitored by workers, the labor cost is greatly reduced, and the workers do not need to stay on the spot; 2. the monitoring system and the control system are arranged in the sub-control center, the monitoring system is used for mastering whether the water level of a reservoir of the hydropower station and equipment of the hydropower station are intact or not, the hydropower station is prevented from being stolen, the control system is used for monitoring the running conditions of the generator and the water turbine, the automatic control running is realized, and the operation cost of the hydropower station is reduced.

Drawings

FIG. 1 is a schematic diagram of an electrical circuit configuration of a automated control system of a hydropower station according to an embodiment;

fig. 2 is a schematic diagram of a sub-control center circuit structure.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, an automatic control system for hydropower stations comprises a main monitoring center 1 and a plurality of sub-control centers 2, wherein each sub-control center 2 comprises a monitoring system 21, a control system 22 and an ethernet switch 23, the monitoring system 21 comprises a plurality of cameras 211, a water level monitoring sensor 212, an energy-saving lamp 213, a memory 214 and an MCU215, the cameras 211, the water level monitoring sensor 212, the energy-saving lamp 213 and the memory 214 are respectively and electrically connected with the MCU215, the control system 22 comprises a PLC controller 221, a hydraulic speed regulator 222, a temperature sensor 223 installed on a generator, a rotary encoder 224 installed on a water turbine, a current transformer 225 and an intelligent electric meter 226, the hydraulic speed regulator 222, the temperature sensor 223, the rotary encoder 224 and the intelligent electric meter 226 are respectively and electrically connected with the PLC controller 221, the current transformer 225 is installed on an output end of the generator and electrically connected with the intelligent electric meter 226, the MCU215 and the PLC controller 221 are electrically connected and are respectively connected to the total monitoring center 1 through the ethernet switch 23. Specifically, in this embodiment, the sub-control center 2 is installed in the hydropower station, so that the monitoring system 21 and the control system 22 can monitor the operation conditions of each device of the hydropower station in real time and control and report the operation conditions to the main monitoring center 1. Further, the monitoring system 21 comprises a camera 211, a water level monitoring sensor 212, an energy-saving lamp 213, a memory 214 and a MCU215, the camera 211 is installed in a key monitoring area in the hydropower station for shooting and recording, and a monitoring video is locally stored in the memory 214, so that the monitoring video does not need to be uploaded to the master monitoring center 1 in real time, the bandwidth occupancy of the monitoring system 21 is reduced, and the monitoring video can be retrieved by a worker in the master monitoring center 1 when the worker needs to check the monitoring video. Use water level monitoring sensor 212 to be used for detecting the reservoir water level to with detected information through MCU215 send to control system 22, make things convenient for control system 22 to control the gate switching size, and judge whether need to impound. Further, a PLC controller 221 for controlling the normal operation of the generator and the hydraulic turbine, a hydraulic governor 222 for adjusting the rotation speed of the hydraulic turbine, a temperature sensor 223 mounted on the surface of the generator, a rotary encoder 224 mounted on the rotary shaft of the hydraulic turbine, a current transformer 225 mounted on the output end of the generator for detecting the output power of the generator, and a smart meter 226 are disposed in the control system 22. Specifically, the current transformer 225 converts a large current output by the generator into a small current, and inputs the small current into the smart meter 226, and it should be noted that the smart meter is electrically connected with the power grid and can also synchronously detect voltage information of the municipal power grid. In order to avoid the frequency and voltage difference between the generator and the power grid being too large, which causes the power grid to fluctuate, the PLC controller 221 adjusts the generating frequency of the water turbine through the hydraulic governor 222 according to the current information input by the smart meter 226, so that the output frequency of the generator is consistent with the power grid frequency. It should be noted that a rotary encoder 224 is further disposed on the rotating shaft of the water turbine, and is used for accurately measuring and calculating the rotating speed of the water turbine, so as to facilitate the fine adjustment of the water turbine by the PLC controller 221. The temperature sensor 223 is arranged on the surface of the generator, and when the temperature sensor 223 detects that the surface temperature of the generator exceeds a preset range, the PLC 221 receives information fed back by the temperature sensor 223, controls the cooling device to cool the generator, and ensures the service life of the generator. It should be noted that the cooling method includes both air cooling and/or liquid cooling. The monitoring system 21 and the control system 22 send the working information to the master monitoring center 1 through the ethernet switch 23, the master monitoring center 1 is attended by people for 24 hours, the working conditions of a plurality of sub-control centers 2 can be monitored simultaneously, the design purpose of monitoring a plurality of hydropower stations by one master monitoring center 1 is realized, the labor cost for operating the hydropower stations is greatly reduced, and the ethernet switch 23 is provided with an RS485 interface for being in communication connection with the PLC controller 221.

As shown in fig. 2, the control system 22 further includes a blower 227 for air-cooling the generator, and the blower 227 is electrically connected to the PLC controller 221. Specifically, in this embodiment, being provided with hair-dryer 227 and carrying out the forced air cooling to the generator, reduce the cooling cost, compare in the liquid cooling mode, maintain simply, need not worry the weeping problem.

As shown in fig. 2, the control system 22 further includes a display device 228, and the display device 228 is electrically connected to the PLC controller 221 and the MCU 215. Specifically, the display device 228 is a touch display screen, which is convenient for a worker to find a fault point according to the display information of the display device 228 when the worker overhauls on the spot.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A hydropower station automation control system is characterized in that: a main monitoring center and a plurality of sub-control centers, wherein the sub-control centers comprise a monitoring system, a control system and an Ethernet switch, the monitoring system comprises a plurality of cameras, a water level monitoring sensor, an energy-saving lamp, a memory and an MCU, the camera, the water level monitoring sensor, the energy-saving lamp and the memory are respectively and electrically connected with the MCU, the control system comprises a PLC controller, a hydraulic speed regulator, a temperature sensor arranged on a generator, a rotary encoder arranged on a water turbine, a current transformer and an intelligent ammeter, the hydraulic speed regulator, the temperature sensor, the rotary encoder and the intelligent electric meter are respectively and electrically connected with the PLC controller, the current transformer is installed on the output end of the generator and electrically connected with the intelligent electric meter, and the MCU and the PLC are electrically connected and are respectively in communication connection with the master monitoring center through the Ethernet switch.

2. A hydropower station automation control system according to claim 1, characterized in that: and an RS485 interface used for being in communication connection with the PLC is arranged on the Ethernet switch.

3. A hydropower station automation control system according to claim 1, characterized in that: the control system also comprises a blower for air cooling the generator, and the blower is electrically connected with the PLC.

4. A hydropower station automation control system according to claim 1, characterized in that: the control system also comprises a display device which is electrically connected with the PLC and the MCU.