Relay protection is not in the power supply bureau There is not much room for improvement

1. The highest relay protection technology content is not bad at all, but it is not very busy and tired, and it is a great responsibility for safety.

2. Relay protection determines that it is necessary to have a comprehensive understanding of the entire system from its technical characteristics, and requires people engaged in this work to be familiar with the entire power system, so it is now the most scarce profession in the entire power system.

3. Since relay protection is a senior professional and technical position, the salary is higher than that of other majors, and the degree of attention in the power system is also higher than that of other majors.

4. Relay protection also directly affects the safety of the system, and there is an indicator of "the correct action rate of protection" in the assessment of leaders, so the general leaders will pay special attention to it, and your relatives may not be comprehensive.

5. Due to the comprehensiveness of the professional technology of the power supply enterprise, most of the leaders of the production technology, such as the director of the biotechnology department, the dispatching director, the chief engineer, and the deputy director in charge of production, are born in this specialty, which shows that the development space is also better than that of other specialties.

6. As far as I know, there is no one in the power grid company system who has retired from relay protection. In particular, it is absolutely impossible for highly educated talents to do it for a lifetime, and it is only a matter of time before they are promoted.

Let's put it this way, if you want to do your own major, then go to the power supply bureau, the income is stable, and it is high, but if you do your own major, you must be psychologically prepared, because once you engage in a major and have a little achievement, you may be engaged in technology for the rest of your life, because I see a lot of CEOs, not engaged in the profession involved in his own company, but they can sit in the position of the boss, because they can go beyond the technical level to consider the problem as a whole.

According to me, depending on what you want to do, maybe you go to the power supply bureau to work for a few years, the people are wide, the road is wide, and the road in the future is also easy to go, promotion is not only depends on whether you do well or not, but also a lot of interpersonal relationships, dealing with people, etc., are decisive factors!

Relay protection is a good job, popularity and leadership contact are opportunities for their own development and prospecting.

As long as you have the heart, are you afraid that there will be no chance?

The way is made by man.

The key to youth is to earn --- in the future

The power supply bureau is an industry organization with the smell of an agency (bureaucracy), which is basically based on seniority, and no matter what you do, you will not be promoted quickly!

The power supply bureau can only say that the work is relatively stable, but there are really not many opportunities for promotion without a way.

If you want to do what you are studying, then go to the power supply bureau, the income is stable and high. If you want to be promoted, then you need to study management things. Or accounting can also be used. That's a lot of contact with the leader. It's easier to go to higher places.

Yes, at the grassroots level, the job should be good, but if you go to school, it's a bit of a loss, and you can be a coolie.

Summary. Dear, I am glad to answer for you: if in the power plant, the power plant attaches importance to power, electrical is a small specialty, electrical relay protection is a small specialty, not valued, the opportunity to promote is naturally not as good as power.

If in the Electric Power Bureau, relay protection belongs to the second profession, every day in the screw, no results, not as high as a high time to be valued, of course, there are times when you pay attention to it, that is, you screw the wrong position, causing an accident, this time you can not run, a better life, can quietly push the responsibility to the manufacturer, bad life, laid off. Then again, if you do this profession, then you have to do it seriously, not the slightest sloppiness, do it well, or one day will be discovered by the leader, relay protection is a fine job. There are also many people who have been promoted in the relay protection major.

Dear, I am glad to answer for you: if in the power plant, the power plant attaches importance to the power, the electric transport is a small specialty, and the electrical relay protection is a small specialty, not valued, and the promotion opportunity is naturally not as good as the power. If in the Electric Power Bureau, relay protection belongs to the second specialty, every day in the screw, no results, not as high as a high value, of course, there are also times when you pay attention to the screw, that is, you screw the wrong position, causing an accident, this time you can not run quietly, a better life, can quietly push the responsibility to the manufacturer, bad life, laid-off.

Then again, if you do this profession, then you have to do it seriously, not the slightest sloppiness, do it well, or one day will be discovered by the leadership, relay protection is a fine job. There are also many people who have been promoted in the relay protection major.

It's not good.

Kiss is good State Grid Corporation system relay protection professional position is relatively good, power system relay pants posture protection is mainly engaged in the operation and maintenance of power relay protection of power book or force system equipment, belongs to the front-line production position.

Relay protection is the key to the safe operation of the power system. The development of relay protection technology can be roughly divided into four historical stages: the three-phase electric energy meter field calibrator can directly measure and diagnose whether the measurement of low-voltage electric energy metering device is normal, and can realize the function of a variety of test instruments; It is a very cost-effective device.

Electromagnetic type, transistor type (also known as semiconductor type or discrete component type), integrated circuit type, microcomputer type. At present, with the development of microelectronic technology, the application of microcomputer relay protection technology has become more and more extensive.

With the development of microelectronic technology, some digital cores with more powerful functions and stronger digital signal processing capabilities will become an inevitable trend in the upgrading of microcomputer protection devices. Typical examples are the Embedded DSP Processor (EDSP) and the Embedded System-on-Chip (ESOC).

The microcomputer protection device analyzes, calculates and makes logical judgments according to the sampling value of the electrical quantity provided by the analog-to-digital converter, and becomes an algorithm to realize various relay protection functions. Microcomputer algorithms can be divided into two categories. The first type is to obtain the elements of the electrical quantity necessary for relay protection from the input sampling points, such as the amplitude, frequency and phase angle of the sinusoidal quantityThe other type is to realize the action characteristics of relay protection in the form of equations and logic.

The criteria for evaluating the merits of an algorithm are accuracy and speed. The speed of the algorithm includes two aspects: one is the number of sampling points (the length of the data window) required by the algorithm, and the other is the workload of the algorithm.

In addition, in order to ensure the correctness of the signal, the corresponding digital filtering is also very necessary.

The electromagnetic compatibility (EMC) of the microcomputer protection device is related to the reliability and life of the device. The following is the current domestic electromagnetic compatibility standard, which is also the main standard that should be followed for the static mode test of the microcomputer protection device.

1. Secondary equipment maintenance 2. When there is a failure, after the correct action of protection, the relay personnel need to go to the scene to check 3. When the secondary equipment is abnormal, the relay personnel go to the site for maintenance 4. If there is an engineering project, the relay team personnel are generally responsible for the cable connection between the primary equipment, terminal box and secondary equipment 5. When the protection is misoperated or refused, it will also be viewed on the spot and an analysis report will be written.

There are others that I can't remember for a while, I don't want to think about it, I'm in a bad mood, and I want to talk to someone.

Relay protection is.

It is used when the power system system fails or has an abnormal state.

Relay protection is when the electrical equipment fails or has an abnormal state, it can automatically and quickly remove the faulty equipment from the power version of the system, so as to limit the right to the minimum as much as possible. When the normal power supply is suddenly interrupted for some reason, the relay protection and automatic devices can also quickly put into backup power, so that important equipment can continue to receive power.

A low-current circuit controls a high-current circuit.

If you read these bai, you will know what to do specifically, Zhi Xi'an Jiaotong University, "Principles of Relay DAO Protection", Chen Yanfeng, special lecture, "State Grid Affiliated Companies, Relay Protection.

Nursing Training Materials (Volume I).

State Grid Corporation of China Relay Protection Training Materials (Volume II).

State Grid Corporation of China Production Skills Personnel Vocational Ability Training Special Textbook Relay Protection".

Hello dear, according to the situation you described, first of all, relay protection devices have entered the era of microcomputer intelligence. Then the performance of its defective chain banquet has also changed accordingly. Some devices that have been in operation for more than 6 years generally fail due to power plug-ins.

Therefore, it is now required to replace the power plug-in every time the protection is stopped and tested, so as to prevent the loss of protection due to failure. The man-machine panel of the crisis protection device generally uses liquid crystal, and communication failures are more common in this regard. Secondary Circuit:

Corrosion, aging, and loosening of the outdoor parts are also the main causes of failure. In addition, the power supply, receiving plug-in, and power amplifier of the high-frequency transceiver are also frequent fault points. In recent years, the failure rate of power grid plant automation equipment is significantly higher than that of relay protection equipment.

In the operation of the power system, external factors (such as lightning strikes, bird damage, etc.), internal factors (insulation aging, damage, etc.) and operation may cause various faults and abnormal operating conditions. Common faults are: single-phase grounding, three-phase grounding, two-phase grounding, interphase short circuit, short circuit, etc.

The non-normal operation states of the power system include: overload, overvoltage, non-full-phase operation, oscillation, subsynchronous resonance, short-term demagnetization and asynchronous operation of synchronous generators.

Power system relay protection and safety automatic device is an important automation technology and equipment used to quickly remove faults and eliminate abnormal conditions when the power system fails and abnormal operating conditions. When the power system fails or endangers its safe operation, they can send out an alarm signal in time, or directly issue a trip command to terminate the fault or accident.

1) The basic task of relay protection.

Automatically and quickly and selectively jump on specific circuit breakers.

Reflects the abnormal operation status of electrical components.

2) The basic requirements of the power system for relay protection are quickness, selectivity, sensitivity and reliability.

Relay protection is an important equipment to protect the primary equipment, ensure the operation safety of the primary equipment, and realize the measurement and remote control of the primary equipment.

The basic requirements of relay protection are selectivity, quick action, sensitivity, and reliability.

The importance is to ensure the safe and stable operation of the primary equipment and meet the basic requirements of relay protection.

Detect faults or abnormal conditions, send out alarm signals, isolate fault parts, and ensure the safe and stable operation of the power system.

The power regulations stipulate that any power equipment (lines, busbars, transformers, etc.) is not allowed to operate without relay protection. All operating equipment must have two sets of AC and DC input and output circuits independent of each other, and control the relay protection devices of different circuit breakers respectively for protection.

When any set of relay protection devices or any group of circuit breakers refuses to operate, another set of relay protection devices can operate another set of circuit breakers to remove the fault. In all cases, it is required that the DC power supply taken by the two sets of protective relay devices and circuit breakers be powered by different fuses. It can be seen that although relay protection is not a primary equipment of the power system, it plays an indispensable and important role in ensuring the safe operation of primary equipment.

Relay protection and automatic devices are an important part of the power system. It plays a key decisive role in ensuring the safe and economical operation of the power system and preventing accidents and expansion. Due to the peculiarities of the power system, the occurrence of electrical faults is inevitable.

Once a local power grid and equipment accident occurs, and it is not effectively controlled, it will cause damage to the stability of the power grid and large-scale power outages. Modern power grids are more dependent on relay protection, and have higher requirements for the accuracy of their actions.

Study the power system.

Failure and abnormal working conditions that endanger safe operation, and anti-accident automation measures for its countermeasures. Because in the process of its development, relays with contacts were mainly used to protect the power system and its components (generators, transformers, transmission lines, etc.) from damage, so it is called relay protection.

The basic task is: when the power system fails or abnormal working conditions, in the shortest time and the smallest area possible, the faulty equipment is automatically removed from the system, or a signal is sent by the personnel on duty to eliminate the root cause of abnormal working conditions, so as to reduce or avoid the damage to the equipment and the impact of pure suspicion on the power supply in adjacent areas.

The theory is hard to learn, and the work is simple and easy.

Work content: To put it bluntly, it is the protection device, maintenance, overhaul, and commissioning of the electrical key pants of the power plant. It's relatively relaxed, and there is very little to do.

Friday eight-hour clock.