CN204374761U - Computer supervisory control system - Google Patents

Abstract

The utility model discloses a computer monitoring system for a hydropower station, which comprises a local control system composed of a CPU module, a communication module, a switch module, an analog module, a temperature module and a power supply module. The communication module is connected with a host monitor equipment, the upper computer monitoring equipment is provided with more than one upper computer, which is characterized in that: the upper computer includes a first operator workstation, a second operator workstation, and an engineer workstation, and the upper computer communicates with the The LCU control cabinet is connected, and the first operator workstation, the second operator workstation, and the engineer workstation are respectively connected to the GPS satellite time synchronization equipment. The utility model connects each workstation with a GPS satellite time synchronization device, adopts a layered distribution structure, controls each module in real time, has a stable structure, and operates efficiently.

Description

Hydropower Station Computer Monitoring System

technical field

The utility model relates to a monitoring system, in particular to a computer monitoring system of a hydropower station.

Background technique

The computer monitoring system of the hydropower station is a kind of control of the electric energy production process of the hydropower station by using the digital electronic computer. The purpose of using computer control is to improve the automation level of the hydropower station, improve the power supply quality of the hydropower station, improve the safe operation level of the hydropower station, and improve the labor productivity and economic benefits of the hydropower station.

At present, from the perspective of the development of hydropower station automation level, the ability of programmable logic controller PLC in high-speed data processing, network communication and system expansion can no longer meet the requirements, (the Chinese patent application number 201420266040.6 discloses a computer monitoring system), which includes a local control system composed of a CPU module, a communication module, a switch module, an analog module, a temperature module and a power supply module. The communication module is connected to an upper monitoring system, and the upper computer monitors More than one upper computer is set in the system; it is characterized in that: the communication module is also connected with other intelligent devices, and the other intelligent devices include man-machine interface, temperature inspection instrument, speed relay, governor and electric quantity meter; The CPU module is connected with a microcomputer programmer. This mode makes up for the shortcomings caused by scattered equipment, so that operators can monitor the operating status of the unit on the host computer or man-machine interface, and realize a real distributed monitoring system.

However, the automatic monitoring system is not perfect, and the upper computer control is easy to cause system operation errors due to the inconsistent processing time and pace of each; and the unreasonable arrangement of the control wiring is prone to electromagnetic interference, which has a negative impact on automatic control; For the occurrence of emergencies (such as power outages), the sustainable work of equipment is very important and has an important impact on control and correction, so continuous work is very necessary. The research and application of existing technologies, as well as Improve the functional requirements of the hydropower station computer monitoring system.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a computer monitoring system for a hydropower station that is stable, safe, and synchronized in real time.

In order to achieve the above object, the utility model provides the following technical solutions: a computer monitoring system for a hydropower station, which includes a local control system and a communication module, the communication module is connected to a host computer, and the host computer includes a first operator Workstation, the second operator workstation, the engineer workstation, the host computer is connected with the LCU control cabinet through the network layer, the first operator workstation, the second operator workstation, and the engineer workstation are respectively connected with the GPS satellite time synchronization equipment, The LCU cabinets include unit LCU cabinets and public LCU cabinets, the unit LCU cabinets are connected to the local control system, and the public LCU cabinets are connected with protection devices and electrical parameter tables.

Preferably, the network layer is an Ethernet transmission line, and the Ethernet transmission line uses a shielded line.

Preferably, the LCU cabinet is connected with UPS uninterruptible power supply equipment.

Preferably, the UPS uninterruptible power supply device has two AC terminals and one DC terminal, one AC terminal is connected to the AC power supply through the second air switch, the other AC terminal is connected to the power socket through the third air switch, and the DC terminal Connect to the battery through a switch.

Preferably, the AC power supply is connected to the lighting equipment.

Compared with the prior art, the beneficial effect of the utility model is: the host computer includes the first operator workstation, the second operator workstation, and the engineer workstation, each of which has a division of labor and cooperation, clear tasks, and realizes the host control of the host computer. It realizes the benefits of distributed control, is easy to operate, and meets the requirements of humanization. At the same time, it optimizes the equipment layout structure and connects the upper computer with the LCU control cabinet through the network layer to realize the connection between the upper computer as the station control layer and the LCU control cabinet as the interval layer through the network layer. , For the control of the local control system, adopt a layered distribution layout mode, optimize the connection, use various modular equipment, achieve the effect of convenient control and maintenance, and superior performance, and implement monitoring for various equipment in hydropower stations.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the computer monitoring system of the utility model hydropower station;

Figure 2 is a connection diagram of uninterruptible power supply equipment;

Figure 3 is a wiring diagram of lighting equipment.

In the figure 1. GPS satellite time synchronization equipment, 2. Ethernet transmission line, 3. Station control layer, 4. Network layer, 5. Space layer, 6. Local control system, 7. Second air switch, 8. Third Air switch, 9.UPS uninterruptible power supply equipment.

Detailed ways

Referring to Fig. 1 to Fig. 3, the embodiment of the computer monitoring system of the hydropower station of the present invention will be further described.

A computer monitoring system for a hydropower station, which includes a local control system composed of a CPU module, a communication module, a switch module, an analog module, a temperature module and a power supply module, the communication module is connected with an upper monitoring device, and the upper More than one host computer is arranged in the computer monitoring equipment, and the host computer includes a first operator workstation, a second operator workstation, and an engineer workstation, and the host computer is connected with the LCU control cabinet through a compartment layer. The first operator workstation, the second operator workstation and the engineer workstation are respectively connected to the GPS satellite time synchronization equipment. The workstations are computers, and multiple computers are combined to form a large control module. The upper computer includes the first operator workstation, the second operator workstation, and the engineer workstation. Each division of labor cooperates with clear tasks, and realizes the upper control of the upper computer, which also realizes the benefits of distributed control. It is easy to operate and meets humanized requirements. Optimize the equipment layout structure, connect the upper computer with the LCU control cabinet through the network layer, realize the connection between the upper computer as the station control layer and the LCU control cabinet as the interval layer through the network layer, and adopt a hierarchical distribution layout for the control of the local control system mode, optimize the connection, and use various modular equipment to achieve the effect of convenient control and maintenance and superior performance, and implement monitoring for various equipment in hydropower stations.

The interval layer is an Ethernet transmission line, and the Ethernet transmission line is a shielded line. According to the field equipment and control scale, select the signal shielding line to prevent the line from being disturbed.

The LCU cabinets include unit LCU cabinets and public LCU cabinets. The unit LCU cabinets are connected to the local control system. The public LCU cabinets are connected with protection devices and electrical parameter tables, and the local control system can be controlled and protected through the LCU cabinets. , to prevent the failure of the local control system, improve the stability and safety factor of the equipment, and the protection device is an electric fire extinguishing device. When an accidental failure occurs, the fire extinguishing device will be triggered to extinguish the fire if there is an open flame.

As shown in Figure 2, the LCU cabinet is connected with UPS uninterruptible power supply equipment. The uninterruptible power supply equipment provides backup power for the LCU cabinet to prevent accidents, and the equipment can also operate to ensure that other units can be automatically protected to achieve the purpose of high efficiency and safety.

The UPS uninterruptible power supply equipment has two AC terminals and one DC terminal. One AC terminal is connected to the AC power supply through the second air switch, the other AC terminal is connected to the power socket through the third air switch, and the DC terminal is connected to the battery through the switch. The air switch is used to automatically disconnect the switch as long as the current in the circuit exceeds the rated current when the circuit fails. The air switch is a very important electrical appliance in the low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing contact and breaking circuits, it can also protect short circuits, severe overload and undervoltage in circuits or electrical equipment, and automatically use UPS uninterruptible power supply equipment, which is more automated.

AC power is connected to the lighting equipment. During circuit failure and maintenance, it is considered that the failure may occur at night. For the convenience of maintenance personnel, setting up lighting equipment can effectively prevent maintenance personnel from accidents under insufficient lighting conditions and increase the safety factor of the entire system.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (5)

1. a computer supervisory control system, it comprises in-situ control system and communication module, described communication module is connected with host computer, described host computer comprises the first operator workstation, second operator workstation, engineer work station, it is characterized in that: described host computer is connected with LCU switch board by network layer, the first described operator workstation, second operator workstation, engineer work station respectively with equipment connection during gps satellite pair, described LCU cabinet comprises LCU for generator set cabinet, public LCU cabinet, described LCU for generator set cabinet is connected with in-situ control system, described public LCU cabinet is connected with protective device, electrical quantity table.

2. computer supervisory control system according to claim 1, is characterized in that: described network layer is Ethernet transmission line, and described Ethernet transmission line adopts shielding line.

3. computer supervisory control system according to claim 1, is characterized in that: described LCU cabinet is connected with UPS no-break power unit.

4. computer supervisory control system according to claim 3, it is characterized in that: described UPS no-break power unit has two and exchanges end, a DC terminal, one exchanges end is connected with AC power by the second air switch, another is exchanged end and is connected with supply socket by the 3rd air switch, and DC terminal is connected with accumulator by switch.

5. computer supervisory control system according to claim 4, is characterized in that: described AC power is connected with light fixture.