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List of contents of this article:

• 1,Hearthstone arena class win rates reddit What are the types of power monitoring systems?
• 2. What is the difference between the ubiquitous video surveillance system and the comprehensive monitoring system of the substation? _Baidu Zhi...
• 3, Production conditions of the operation site of the power monitoring system
• 4, What do soft signals and hard contacts in the substation monitoring system mean?

What are the types of power monitoring systems?

Mainly include the following types. Voltage stabilizer online monitoring system: monitor the working status of the voltage stabilizer in real time by monitoring the input voltage, output voltage, load current and other parameters of the voltage stabilizer.

Power monitoring system, through the intelligent power monitoring terminal to the power supply transformer in the building, high-voltage side power supply parameters and low-voltage side power supply parameters are monitored, data recording and analysis are carried out, and refined management, dynamic control and alarm functions are realized.

Power transmission supervision: monitor and manage the operation of power transmission and transmission grid, including the operation status of power transmission equipment, power load scheduling, power transmission loss, etc. Power distribution supervision: supervise the operation of power distribution and power distribution network, including the monitoring and management of the status of power distribution equipment, power supply reliability, power distribution loss and other aspects.

Energy management system: Energy management system is a comprehensive energy consumption management system, which can integrate a variety of energy consumption monitoring equipment, including electricity, water, gas, etc., to provide comprehensive energy data and analysis reports to help enterprises realize energy classification management and improve energy utilization efficiency.

What is the difference between the ubiquitous video surveillance system and the comprehensive monitoring system of the substation? _Baidu Knowledge...

The differences between these two monitoring systems are as follows: the purpose of monitoring is different: the video surveillance system, which can be seen everywhere, is mainly used for security monitoring in public places, commercial places and other places to prevent and combat crime; while the monitoring system of substations is mainly used for power system operation. Security monitoring to ensure the stable operation of the power system.

Video display part The core of the video display part is TV, monitor and other equipment, which is the part that can best reflect the height of the whole monitoring system. If the display part is beautifully done, the whole project will add a lot of color.

The structure is clear and simple: the monitoring host through the network video setThe monitoring system management software realizes various functions of video matrix, picture splitter and other equipment in the analog system, and realizes the video recording function through the computer hard disk, so that the system structure is simplified and highly integrated.

Transmission: The transmission distance is relatively close, and the video transmission method of coaxial cable transmission of video baseband signal can be adopted. Long-distance transmission or transmission that needs to avoid strong electromagnetic field interference should adopt optical cable transmission. When there are special requirements, it is appropriate to use metal-free optical cables.

The perimeter camera and the circumnavigation camera are two different camera systems, which differ in function and installation position. First of all, the perimeter camera system is an on-board camera system composed of four cameras, front, rear, left and right, which are installed in the front, rear, left and right directions of the vehicle.

Production conditions of the operation site of the power monitoring system

The production conditions of the operation site of the power monitoring system and the safety facilities should meet the requirements of relevant standards and specifications.

The power cord must be made of copper core Class II protection wire with an insulation level of more than 500v, and climate-resistant power cords need to be used outdoors.

The basic conditions for operators of the power safety work protocol (line part) are: after being identified by a doctor, there are no symptoms that hinder work (physique examination at least once every two years). Two. Have the necessary knowledge of production safety, learn the emergency rescue method, and especially learn electric shock first aid.

What do soft signals and hard contacts in the substation monitoring system mean?

1. Soft signals are soft signals, while hard contact signals are hard contact signals. Soft signal refers to protection, measurement and control and other devices. Through twisted pair, network cable, optical fiber and other media, the protection action, device abnormality, remote measurement and other signals are sent to the monitoring system.

2. The hard contact is the contact point given on the strong electric control box contactor and its backpack. Usually, the passive dry contact point on the backpack is the operating and fault signal DI point, and the control line connected to the DO point on the contactor coil or intermediate relay coil. The commonly used soft contact is to measure pulses or to integrate the system commercially through a certain protocol.

3. PST is the abbreviation of Power System Stabilizer, which translates as power system stabilizer.It is a device used to improve the stability of the power system. PST improves the stability of the power system by detecting parameters such as frequency and voltage fluctuations of the power system, and by injecting control signals into the disturbance signal.

4. After receiving the interval layer measurement and control protection device sent to the circuit breaker or knife gate corresponding division, closure and locking commands under the GOOSE network, the intelligent operation box will be converted into the corresponding pulse signal drive relay hard contact to complete the corresponding remote operation.

5. GOOSE adopts network signals to replace the communication method of hard wiring between conventional substation devices, which greatly simplifies the secondary cable wiring of substations.

6. The polarity connection method of the welding machine takes the workpiece as a reference, that is, the welding workpiece is connected to the positive pole output by the welding machine, and the welding handle (pliers) connects to the negative pole.The positive polar connection arc has hard characteristics. The arc is narrow and steep, the heat is concentrated, and the penetration is strong. With a relatively small current, a deeper melting depth can be obtained to form a welding path.