CN106655501A - High-voltage transmission and transformation system - Google Patents

Abstract

The invention discloses a high-voltage power transmission and transformation system, which includes a power system, a power supply protection system, an equipment monitoring system, a central processing unit and a power supply system; the power system includes a transmission line, a transformer, a transmission line support rod and a high-voltage insulator; the transmission line is connected To the transformer, the transmission line is installed on the support pole of the transmission line through high-voltage insulators; the power supply protection system includes transformers, relay protection devices and lightning protection systems; the transformer substation equipment is also equipped with a line antifreeze system, and the equipment monitoring system is connected to A power supply system, the power supply system supplies power to the equipment monitoring system, and the equipment monitoring system includes a detection sensor module, a voltage detection device, a current detection device and an alarm system. The invention can effectively prevent power supply equipment from being damaged by lightning strikes, and is equipped with an equipment monitoring system to effectively monitor power transmission equipment in real time, and notify electric power workers through an alarm system to carry out electric emergency repairs.

Description

A high voltage power transmission and transformation system

technical field

The invention relates to the field of electric power, in particular to a high-voltage power transmission and transformation system.

Background technique

In recent years, with the rapid development of the power industry, the power system is developing towards high voltage and large capacitance. Electric energy is inseparable from the development of the national economy and people's production and life. The transmission of current often leads to loss due to the heat of the line, so the voltage is increased through transformers during transmission, so that the current becomes smaller to reduce heat loss. High-voltage electricity is very dangerous, and the target electrical appliances do not need such a high voltage, so it is necessary to reduce the voltage through power transformation. Since multiple power transformations are required in the process of current transmission, the transmission of current is called power transmission and transformation. Power transmission and transformation equipment is the key equipment in the operation of the power grid, and its working status is directly related to the safe operation of the entire power grid. Therefore, power transmission and transformation can be simply divided into two main parts: transmission lines and substations. The stable operation of the power system is related to people's life and production activities, as well as the stability of the country and society. Every failure of the power system may cause immeasurable losses to the society. Therefore, ensuring the safe operation of the power system is the primary task of the power industry such as the power transmission and transformation department.

Contents of the invention

The purpose of the present invention is to provide a high-voltage power transmission and transformation system to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A high-voltage power transmission and transformation system, including a power system, a power supply protection system, an equipment monitoring system, a central processing unit, and a power supply system; the power system includes a transmission line, a transformer, a transmission line support rod, and a high-voltage insulator; the transmission line The main function is to guide electric energy to achieve directional transmission. The transmission line is connected to a transformer, and the transmission line is installed on the support pole of the transmission line through a high-voltage insulator; the transformer includes a step-up transformer and a step-down transformer, and one end of the step-up transformer is connected to the power station , the other end is connected to the transmission line, the other end of the transmission line is connected to the step-down transformer, and the step-down transformer is connected to the user's power consumption system, and the power supply protection system includes a transformer, a relay protection device and a lightning protection system; the lightning protection The system includes a lightning arrester and a lightning lead wire. One end of the lightning arrester is connected to the transmission line, and the lightning arrester is connected to the grounding device through the lightning lead wire. The grounding device is buried underground; the transformer substation equipment is equipped with a line antifreeze system, and the The equipment monitoring system is connected to the power supply system, and the power supply system supplies power for the equipment monitoring system. The equipment monitoring system includes a detection sensor module, a voltage detection device, a current detection device and an alarm system; the detector sensor module is connected to the central processing unit, and the Both the voltage detection device and the current detection device are connected to the central processing unit, and the central processing unit is connected to the alarm system.

As a further solution of the present invention: the high-voltage insulator is used to support or suspend the transmission line, and the high-voltage insulator functions to isolate the ground. The material of the high-voltage insulator is porcelain, and the high-voltage insulator is installed on the support rod of the transmission line.

As a further solution of the present invention: the line antifreeze system includes a laser, the laser is used to scan the surface of the frozen power supply equipment, the energy of the laser is respectively absorbed by the ice layer and the surface of the equipment, and the ice layer that absorbs the laser energy will be Divided into small pieces, after the surface of the equipment absorbs the laser energy, the ice layer in contact with the surface of the equipment is melted, and the ice layer falls off from the power supply equipment under its own gravity.

As a further solution of the present invention: the sensor detection module is provided with a sensor, and the sensor is one or more of a temperature sensor, a smoke sensor or a flame sensor.

As a further solution of the present invention: the voltage detection device and the current detection device are used to monitor the current and voltage conditions on the power transmission equipment, and transmit the voltage and current information to the central processing unit, when the voltage or current exceeds the safe range The central processing unit sends an alarm through the alarm system.

As a further solution of the present invention: the main function of the transformer is to convert the high-voltage wire of the substation or the current flowing through the high-voltage wire into a low voltage and a small current according to a certain ratio, thereby realizing the low voltage of the high-voltage wire of the substation. and the effective measurement of the current flowing through the high-voltage conductor; the relay protection device determines which parts of the power system need to be cut off and which parts are put into use according to the situation reflected by the transformer equipment.

Compared with prior art, the beneficial effect of the present invention is:

The high-voltage power transmission and transformation system can effectively prevent power supply equipment from being damaged by lightning by setting up a lightning protection system, and can prevent power transmission equipment from being damaged by ice and snow by setting up a line antifreeze system, and is equipped with an equipment monitoring system that can effectively monitor power transmission equipment in real time. Through the alarm system and timely notification to the electric staff to carry out electric emergency repairs.

Description of drawings

Figure 1 is a schematic structural diagram of a high-voltage power transmission and transformation system.

detailed description

The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

Please refer to Figure 1, a high-voltage power transmission and transformation system, including a power system, a power supply protection system, an equipment monitoring system, a central processing unit, and a power supply system; the power system includes a transmission line, a transformer, a transmission line support rod, and a high-voltage insulator; The main function of the transmission line is to guide electric energy to achieve directional transmission. The transmission line is connected to a transformer, and the transmission line is installed on the support rod of the transmission line through a high-voltage insulator; the transformer includes a step-up transformer and a step-down transformer. The step-up transformer One end is connected to the power station, the other end is connected to the transmission line, the other end of the transmission line is connected to the step-down transformer, and the step-down transformer is connected to the user's power system. The transformer uses the principle of electromagnetic induction to control the AC voltage on both sides of the transformer Transformed electrical equipment; the step-up transformer can greatly reduce the power loss on the transmission line when the electric energy is transmitted over a long distance. The electric energy generated by the generator needs to be increased in voltage before long-distance transmission. The step-down transformer can only enter the user's power system after it is lowered; the high-voltage insulator is used to support or suspend the transmission line, and the high-voltage insulator plays a role in isolating the ground. The material of the high-voltage insulator is porcelain, and the high-voltage insulator is installed in on the wire support rod;

The power supply protection system includes a transformer, a relay protection device and a lightning protection system;

The main function of the transformer is to convert the high-voltage wires of the substation or the current flowing through the high-voltage wires into low voltage and small current according to a certain ratio, so as to realize the low voltage of the high-voltage wires of the substation and the current flowing through the high-voltage wires. effective measurement. For high-current and high-voltage systems, current and voltage measuring instruments or meters cannot be directly connected to the system. This requires converting large current and high voltage into small current and low voltage according to a certain ratio. Usually, transformers are used to complete this. kind of transformation.

The relay protection device is an important safety protection system of the power system. It decides which parts of the power system need to be removed and which parts need to be put in according to the situation reflected by the transformer and some other measuring equipment. Although the relay protection device is small and can only work under low voltage, it plays an important role in the safe operation of the entire power system.

Lightning protection system, the lightning protection system includes a lightning arrester and a lightning lead wire, one end of the lightning arrester is connected to the transmission line, the lightning arrester is connected to the grounding device through the lightning lead wire, and the grounding device is buried underground; It is transmitted to the grounding device through the lightning wire, and the lightning is transmitted to the ground to prevent the transmission line from being struck by lightning.

The transformer substation equipment is provided with a line antifreeze system, and the line antifreeze system includes a laser. The laser is used to scan the surface of the frozen power supply equipment. The energy of the laser is absorbed by the ice layer and the surface of the equipment respectively. The ice layer will be divided into small pieces, and the ice layer in contact with the device surface will be melted after the surface of the equipment absorbs the laser energy, and the ice layer will fall off from the power supply equipment under its own gravity; the line antifreeze equipment solves the problem of line freezing;

The equipment monitoring system is connected to a power supply system, and the power supply system supplies power to the equipment monitoring system. The equipment monitoring system includes a detection sensor module, a voltage detection device, a current detection device and an alarm system; the detector sensor module is connected to the central processing unit , the voltage detection device and the current detection device are connected to the central processing unit, the central processing unit is connected to the alarm system, the voltage detection device and the current detection device are used to monitor the current and voltage conditions on the power transmission equipment, and the voltage and current information When the voltage or current exceeds the safe range, the central processor will give an alarm through the alarm system; the sensor detection module is provided with a sensor, and the sensor can be a temperature sensor, a smoke sensor or a flame sensor. When a fire occurs, the sensor detection module transmits the signal to the central processing unit, and the central processing unit controls the alarm system to give an alarm;

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (6)

1. A high-voltage power transmission and transformation system, characterized in that it includes a power system, a power supply protection system, an equipment monitoring system, a central processing unit, and a power supply system; the power system includes a transmission line, a transformer, a transmission line support bar and a high-voltage insulator The main function of the transmission line is to guide electric energy to achieve directional transmission, the transmission line is connected to a transformer, and the transmission line is installed on the support rod of the transmission line through a high-voltage insulator; the transformer includes a step-up transformer and a step-down transformer. One end of the transformer is connected to the power station, the other end is connected to the transmission line, the other end of the transmission line is connected to the step-down transformer, and the step-down transformer is connected to the user's power consumption system. Lightning protection system; the lightning protection system includes a lightning arrester and a lightning guide wire, one end of the lightning arrester is connected to the transmission line, the lightning arrester is connected to the grounding device through the lightning guide wire, and the grounding device is buried underground; the transformer substation equipment is provided with Line antifreeze system, the equipment monitoring system is connected to the power system, the power supply system supplies power for the equipment monitoring system, and the equipment monitoring system includes a detection sensor module, a voltage detection device, a current detection device and an alarm system; the detector sensor module is connected To the central processing unit, the voltage detection device and the current detection device are both connected to the central processing unit, and the central processing unit is connected to the alarm system. 2. The high-voltage power transmission system according to claim 1, characterized in that, the high-voltage insulator is used to support or suspend the transmission line, and the high-voltage insulator plays a role of ground isolation, and the material of the high-voltage insulator is porcelain. The high voltage insulator is installed on the transmission line support rod. 3. The high-voltage power transmission and transformation system according to claim 1, wherein the line antifreeze system includes a laser, the laser is used to scan the surface of the frozen power supply equipment, and the energy of the laser is respectively absorbed by the ice layer and the surface of the equipment. Absorption, the ice layer that absorbs the laser energy will be divided into small pieces, and the ice layer in contact with the device surface will be melted after the surface of the equipment absorbs the laser energy, and the ice layer will fall off from the power supply equipment under its own gravity. 4. The high-voltage power transmission system according to claim 1, wherein the sensor detection module is provided with a sensor, and the sensor is one or more of a temperature sensor, a smoke sensor or a flame sensor. 5. The high-voltage power transmission and transformation system according to claim 1, wherein the voltage detection device and the current detection device are used to monitor the current and voltage conditions on the power transmission equipment, and transmit the voltage and current information to the central processing unit When the voltage or current exceeds the safe range, the central processor will send an alarm through the alarm system. 6. The high-voltage power transmission and transformation system according to claim 1, wherein the main function of the transformer is to convert the high-voltage wires of the substation or the current flowing through the high-voltage wires into low voltage and small voltage according to a certain ratio. Current, so as to realize the effective measurement of the low voltage of the high-voltage wire of the substation and the current flowing through the high-voltage wire; the relay protection device determines which parts of the power system need to be cut off and which parts are put into use according to the situation reflected by the transformer equipment .