Q:The production and transportation process of electric power

The transmission voltage is the main symbol of the development level of transmission technology. By 1990s, the world's commonly used transmission voltage of 220 thousand volts and above high voltage transmission of 330 to 765 thousand volts EHV transmission, more than 1 million volts and UHV transmission. In power system, the power plant will naturally change the primary energy into electricity, and send electricity to power users far away, in order to reduce the power loss of transmission line and line impedance, voltage should be increased; in order to meet the needs of power users safe, and will reduce the voltage, and assigned to each user, this we need to raise and lower the voltage, and can change the distribution of electric power. So the substation and distribution of electric power electrical device through its transform voltage, electric power system, it is a link between power plant and power users, and through each substation voltage level of the grid connected substation function is to transform voltage, transmission and distribution of power. Substation is composed of power transformer, power distribution equipment, two system and necessary auxiliary equipment.

Q:What are the main interference sources of the two power system

The main source of disturbance in power system are: high voltage isolation switch and circuit breaker operation; short circuit and lightning system; partial discharge; two switch operation system; voltage load change and faults when the power grid has sag, interruption, unbalance, harmonics and frequency variation of power frequency and harmonic electric field and harassment; the magnetic field generator and transformer; transmission circuit in the surrounding electric field and magnetic field; high frequency conduction disturbance and radiation disturbance automation equipment, radio equipment; natural phenomena such as lightning, electrostatic discharge, geomagnetic disturbance and dry harassment pulse generated by nuclear power.

Q:The problem of electric power equipment withstand voltageWhy does the pressure decrease when the altitude is high? The air is thin, is not easy to breakdown (vacuum breakdown is not very low atmospheric pressure)

Because of the low air pressure in the air at high altitude, at the same voltage

Q:The company has a number of power equipment to be exported, need to go through the sea, the technical requirements of three, I would like to ask what is the three here? How to check whether the complete sets of components used to do three treatment? Please exhibitions, grateful!

The complete set of power distribution equipment is a complete set of equipment supplied by the manufacturer. The electric main circuit is divided into a plurality of units, each unit is a circuit, and the circuit breaker, the knife gate, the current transformer and the voltage transformer of each unit are connected

Q:What is the importance of annual maintenance of electrical equipment? What harm does not do? As detailed, urgently!

Two, power equipment testing overviewElectrical equipment preventive testing refers to the equipment has been put into operation according to the stated experimental conditions (test equipment, such as the provisions of the environmental conditions, test methods and test voltage etc.), regularly check the test items, test period ofOr test to find out the hidden trouble of the electric equipment in operation, prevent the accident or the damage of the electric equipment. It is an important measure to judge whether the power equipment can be put into operation and ensure the safe operation.With the rapid development of social economy, the rapid development of science and technology, the range of power equipment testing, equipment and technology are advancing with the times. A set of equipment "health index" including its electrical characteristics and mechanical characteristics of the two part of the contents of the groupAs a result, and can not get the power equipment in the power of the electrical characteristics of the "health value" this problem has been plagued by power users for many years. The emergence of a new condition monitoring technology solves this problem. Not only extends the powerThe concept of equipment testing, but also to fill the blind spot in the field of power equipment testing. The conventional power outage detection and monitoring technology complement each other, to provide a full range of data support for the reliable operation of power equipment.

Q:What equipment are used in the power, can help to divide some of the details, as well as the type of equipment under the type of equipment

Power equipment classification:1 the sequence of electric power in power system can be divided intoPower generating equipment, power generation equipment, power transmission equipment and electric equipment2 the main role of the power system can be divided intoPrimary equipment, two equipment

Q:On the safety hazards of electric equipment safety

3 where in the overhead power line protection zone new, reconstruction or expansion of the building, must go to the power supply department for the approval of the relevant procedures for the safety of power facilities construction. It is forbidden to borrow, dig fish ponds, pile up or dump harmful chemicals in the power line protection zones.4 where the demolition, the power line protection zones of overweight, lifting, drilling, piling, scaffolding and other construction work, it shall be permitted by the power supply departments, take appropriate safety measures, and can work in the power supply department under the supervision of professional staff.

Q:Complete sets of power equipment life of the country what are the provisions for the aging of the equipment how to deal with, there is no standard?

Conventional equipment GB service life of 30 years, actually not to use life to replace, mainly is the national economic development speed is faster, for the replacement of aging equipment, specialized centralized auction, where their standard is used according to their own situation to the report.

Q:How to run a company that operates electric equipment

Or do not do other electric power equipment, but the company's other power products to pull the business on the line, at the beginning of the sale to the quality of good, and then the price is low, a long time there is profit, customers will have.

Q:I would like to ask the power experts, according to the annual additional electricity, installed capacity, how to calculate the amount of the necessary supporting power equipment, etc.?

In accordance with the annual increase of 90 million to consider the installation of the words, basically belong to the Chinese power market