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Prospect of future power grid development

2022-02-18 11:22:56

In the 21st century, the global power industry continues to develop in the direction of intelligence. China's power industry has also experienced reshuffle again and again, and the intelligent level of power network is also improving. Especially in recent years, with the enhancement of China's comprehensive national strength, the technology upgrading speed of power network has been accelerating, and very gratifying achievements have been made, In this paper, we will briefly introduce the prospect of China's power grid development in the future.

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What are the advantages of integrated energy system

2022-02-18 11:22:29

With the development of China's clean energy and environmental protection system, it is of great significance for China to build a clean energy and environmental protection system, To realize the optimization of energy structure, this paper briefly introduces the advantages of comprehensive energy system.

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How to judge the insulator voltage?

2022-02-18 11:21:36

Insulator is a special insulation control, which can play an important role in overhead transmission line. In the early years, insulators were mostly used for electric poles, and gradually developed in the high-voltage electric wire connection tower. Many disc-shaped insulators were hung at one end to increase the creepage distance. They are usually made of glass or ceramics, which is called insulators.

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How are insulators tested

2022-02-18 11:21:00

Insulator is a special insulation control, which can play an important role in overhead transmission line. In the early years, insulators were mostly used for electric poles, and gradually developed in the high-voltage electric wire connection tower. Many disc-shaped insulators were hung at one end to increase the creepage distance. They are usually made of glass or ceramics, which is called insulators. The insulator shall not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions, otherwise the insulator will not play a significant role and will damage the service and operation life of the whole line.

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Insulation withstand voltage tester

2022-02-18 11:19:40

Compared with the main insulation of the transformer, that is, the insulation between windings and between windings and iron core, the transformer also has another important insulation performance index - longitudinal insulation. Longitudinal insulation refers to the insulation between different points and parts of transformer winding with different potentials, mainly including the insulation performance between turns, layers and sections of winding. The "induced voltage withstand test" specified in national standards and International Electrotechnical Commission (IEC) standards is one of the test methods specially used to test the longitudinal insulation performance of transformer.

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Evaluation of insulation withstand voltage capability of electrical equipment

2022-02-18 11:18:23

It is a technical means to inspect and evaluate the insulation withstand voltage capability of electrical equipment. Insulation structure shall be adopted between the live part and grounding part of all electrical equipment or with other non equipotential charged bodies to isolate them from each other, so as to ensure the normal operation of the equipment.

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What are the operating skills of the cable fault tester?

2022-02-18 11:17:54

After connecting the line according to the multiple pulse method on site, it is normal to apply impact high voltage if a more ideal test waveform is not obtained. Because the distance of the fault is not known in advance, the electrical strength of the fault point is not clear. If the impulse voltage is not high enough and the fault point is not broken down by the impulse high voltage to produce arc, the fault echo cannot be collected. At this time, only the open circuit waveform of the terminal can be seen. The impulse voltage must be increased until the fault echo is seen.

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Why do we need to conduct a power frequency AC withstand voltage test?

2022-02-18 11:15:15

The power frequency AC withstand voltage test is to apply a certain voltage to the tested product and keep it for a certain period of time to consider the ability of the tested product's insulation to withstand various voltages, so as to ensure the safe operation of the equipment. Although many insulation defects can be found in insulation resistance and absorption ratio test, leakage current and DC withstand voltage test, and dielectric loss angle measurement test, etc.,

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On-site inspection and design requirements for microcomputer relay protection devices

2022-02-18 11:14:34

According to the maximum and minimum impedance at each bus of the system, check whether the linearity of the microcomputer relay protection device can meet the requirements of the system. Special attention should be paid to the relationship between the secondary resistance of the current converter in the microcomputer relay protection device, the current proportional coefficient and the linearity of the microcomputer relay protection device.

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Test-based installation (repair, test) power facility license application conditions and instrument configuration table (level five)

2022-02-10 14:10:34

The license level of power facilities for trial installation (repair and test) is divided into level I, level II, level III, level IV and level v.Application conditions for power facility license (Level 5) of test type installation (repair and test):

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Phone：0086-15231260588
Tel：0086-312-3172660 / 3188565
E-mail：bdweisheng@126.com

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