What knowledge do you need to read about power system relay protection? Emphasis on focus specializa

Power system relay protection is a more sophisticated theory in the electrical profession.

Relatively speaking, there are more theories.

If the landlord really wants to develop in this direction.

In fact, you can consider it comprehensively, first of all, you have to consider the direction of your future work, whether to the power plant or to the power supply bureau or some scientific research institutes, so that you can consider whether there is a problem of considering generator protection and excitation system, relatively speaking, the more professional is to engage in power system relay protection work in the power plant.

Second, if you want to learn this major well, in fact, the previous professional basic courses still need a certain amount, such as electrical engineering, electronics (modular electricity and digital electricity), power electronics, and some other professional courses need to be proficient in some, such as basic electrical equipment, high-voltage technology, power grids and power systems.

And the third is the specialized course, which is mainly the book on power system relay protection and power system automatics.

There are also some such as the principle of microcomputer protection of the power system, if you can, the landlord can be more from some of the main protection equipment manufacturers in China, and more of their electronic version of the technical specifications of the device, the overall feeling of work, their equipment, proficient in their things, optimistic about their technical specifications and debugging outline, more important.

One point that needs to be explained here is that the direction of future work If you have to deal with the power plant a lot, now you need to learn the generator protection in relay protection in school, including the excitation protection This is not the work of the power supply bureau, that is, you don't need to know this part when you work in the power supply bureau.

There is also the excitation system in the automatic device and the quick-cut self-throwing integrated automatic recloser.

If you are looking for books, you can find some special electric power bookstores or comprehensive bookstores, and the books published by the China Electric Power Press are closer to the power system, and the books of the Post and Telecommunications Publishing Office and what machinery publishing house are closer to the society, and the books on the power system are not cheap, so it is best to buy them with excellence.

Good luck!

Power system relay protection recommends you to read Professor Wang Weijian's book, which is indeed very good!

The calculation of short-circuit current is more important, in addition to various protections, and there are many applications after the knowledge work involving automation. These are generally used more after graduation.

Power System Relay Protection" by Power Systems Press This book I learned when I was in school.

Power System Relay Protection" Power System Press.

The power system should meet the requirements of reliability, selectivity, sensitivity and quickness for the relay protection device.

1. Reliability: The relay protection device should have a high degree of reliability when identifying and responding to abnormal conditions in the power system. It should be able to reliably identify faults and act accurately to isolate them, thus protecting equipment and systems from damage.

2. Selectivity: The relay protection device should be selective, that is, only the faulty part should be moved, and the normal part should be kept still. This ensures that in the event of a failure, only the affected equipment is cut and distorted, without affecting the normal operation of other parts.

3. Sensitivity: The relay protection device should be sensitive to be able to quickly detect the abnormal situation of the power system. It needs to be able to accurately identify and measure parameters such as current and voltage, and act accordingly with appropriate judgment and logic.

4. Quick-action: The relay protection device should have quick-action, that is, it can act quickly in the event of a fault. This is to quickly isolate the fault and protect the rest of the system to minimize the impact of the fault on the power system.

Power system relay protection plays a vital role in the power system

1. Equipment protection: The relay protection device can detect faults in the power system in time, such as short circuit, overload, grounding fault, etc., and then quickly cut off the fault area to avoid damage or damage to the equipment.

2. Personnel safety: Faults in the power system may pose a threat to the safety of personnel, such as the risk of electric shock. Protective relays are able to quickly detect these faults and take the necessary measures to ensure the safety of workers.

3. System stability: The failure of some equipment in the power system may lead to the instability or even collapse of the whole system. The action of the relay protection device can quickly cut out the fault area and avoid the spread of the fault, so as to maintain the stable operation of the power system.

4. Fault isolation: The relay protection device can act quickly and isolate the fault area to prevent the further impact of the fault. This helps reduce the scope and duration of outages, improving the reliability of power**.

5. Monitoring and diagnosis: Relay protection devices are usually equipped with monitoring and diagnosis functions, which can record and report the operating status and abnormal conditions of the power system.

1. Selectivity Selectivity means that when the protection device is activated, only the faulty components are removed from the power system, so that the scope of the power outage is reduced as much as possible, so as to ensure that the fault-free part of the system can still continue to operate safely.

Primary Protection: Protection that selectively and quickly excises faults across the line.

Backup protection: When the fault line near backup protection: as the backup protection of the main protection of the line.

2. Quickness Quickness refers to the removal of faults as quickly as possible.

Rapid removal of faults in the event of a short circuit can reduce the scope of the fault, reduce the degree of damage caused by the short circuit, reduce the impact on the user's work, and improve the stability of the power system.

3. Sensitivity Sensitivity refers to the ability to respond to failures or abnormal operating conditions within the protection range. The sensitivity of the protective device is usually measured by the sensitivity factor, the greater the sensitivity factor, the higher the sensitivity of the protection, and vice versa.

4. Reliability Reliability means that when a fault occurs within the specified protection range, it should not refuse to act, and in other cases that do not belong to its should act, it should not malfunction.

Between the above four basic requirements, some complement each other, and some of the fibers are mutually restrictive, and they need to be coordinated separately for different use conditions.

These four basic requirements are the basis for the analysis and study of relay protection, and they are also a basic clue throughout the course. According to the position and role of the protection element in the power system, the specific protection mode is determined to meet its corresponding requirements. It is used to remove the fault when the main protection or circuit breaker refuses to operate.