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Anonymous users2024-02-071. First of all, ensure that there is a stable dual-circuit power supply, and the grade and voltage drop of the power supply must meet the requirements and have a certain wealth;
2. The main transformer, underground cable, underground substation and other equipment must meet the requirements and run well.
3. Then all kinds of comprehensive protection devices are installed in place.
4. A key link is the usual management and maintenance. It is necessary to formulate safe and standardized operating regulations, and strictly implement them, and workers in all positions must be certified to work and regularly trained, so as to achieve both commercial law.
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Anonymous users2024-02-06Summary. Dear, hello, for you to answer the following questions: the requirements for coal mine power supply are:
1. Reliable power supply: Reliable power supply requires uninterrupted power supply. 2. Power supply safety
The three major tasks of safe power supply in coal mines are explosion-proof, fire-proof, and anti-electric shock. 3. Power supply quality; Its voltage and frequency must be stable, and for alternating current with a rated frequency of 50 Hz, its frequency deviation is not allowed to exceed plus or minus hertz; The voltage generally does not exceed plus or minus five percent. 4. Power supply economy
The economy of power supply generally considers three aspects: minimizing the capital construction investment of enterprise substations and power grids; Minimize the consumption of equipment, materials and non-ferrous metals; Minimize the power loss and maintenance cost of the power supply system.
Dear, hello, for you to answer the following questions: the requirements for power supply in coal mines are: 1. Reliable power supply
The power supply can be relied on by the base slag is required to supply the beam with uninterrupted flashlight. 2. Power supply safety: The three major tasks of safe power supply in coal mines are explosion-proof, fire-proof, and anti-electric shock.
3. Power supply quality; Its voltage and frequency must be stable, and for the alternating current with a rated frequency of 50 Hz, its frequency deviation is not allowed to exceed plus or minus hertz; The voltage generally does not exceed plus or minus five percent. 4. Power supply economy: The economy of power supply generally considers three aspects:
Minimize the capital construction investment of enterprise substations and power grids; Minimize the consumption of equipment, materials and non-ferrous metals; Minimize the power loss and maintenance cost of the power supply system.
Related Expansion: Electricity is the main driving force of coal production, and it is one of the important users of the power system. Due to the special work in the coal mine, high requirements are put forward for the power supply of the coal mine, and these requirements are:
1. Reliable power supply The so-called reliable power supply is required to be uninterrupted. If the power supply of the coal mine is interrupted, it will bring a serious threat to the safety of life and property in the coal mine. The "Coal Mine Safety Regulations" stipulates:
The mine should have two circuits of power lines from different bridges and hail substations, and when one circuit fails and the power supply is stopped, the other circuit should be able to bear the full load of the mine. 2. Power supply safety Underground power supply is easy to lead to electric shock or gas and coal dust caused by electric sparks, so a series of technical measures must be taken to formulate a strict management system to ensure safe power supply. 3. Good power supply quality For coal mine power supply, not only the quantity of electric energy is required to meet the production needs, but also the power supply power quality is good
That is, the frequency fluctuation range shall not exceed the hertz of the rated frequency, and the voltage fluctuation range shall not exceed 5% of the rated voltage. 4. Power supply economy Coal mine power supply equipment consumes a lot of electricity, if the power supply system design is unreasonable, and the improper use of electrical equipment will cause the power factor to decrease, the line loss will increase, and the production cost will rise. Therefore, it is of great significance to ensure the economy of coal mine power supply.
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Anonymous users2024-02-05The coal mine substation is also a substation, so he not only has to comply with the safety regulations of ordinary substations, but also has some peculiarities.
1: Safe operation, install the five proofs and operate in strict accordance with the five proofs, control the five proofs key, and prevent people from hurting or accidentally cutting important loads.
2: Equipped with self-throwing or quick-cutting devices, and ensure that the standby self-throwing (quick-cutting) is always in the state of charging completion, so that important loads (exhaust fans, blowers, etc.) are uninterrupted to ensure the safety of underground exhaust and transportation.
3: For the movement of the coal seam, the cable is also often moved, so it is necessary to overhaul the cable frequently to prevent leakage from hurting people, 4, the use of explosion-proof equipment (explosion-proof transformer, explosion-proof secondary power equipment) to prevent the expansion of faults.
5. Many underground substations are cascaded, and the protection value is simple and obviously not good through the delay, so it is difficult to meet the basic requirements of protection by using general comprehensive protection equipment, fastness and selectivity, so the relatively new system --- digital substation is selected to solve this problem. In particular, the comprehensive insurance equipment specially designed for coal mines.
6: The location of the substation must be safe, completely eliminate water leakage and other problems, 7: install temperature probes and monitor in places that are easy to heat, such as transformers, cable joints, switch joints, etc., once the heating is serious, solve it as soon as possible, the purpose is to prevent it as soon as possible.
How many paragraphs have been revised in the 2022 version of the "Coal Mine Safety Regulations". >>>More
Coal mine safety production is to achieve no danger in production, and all systems are set up to ensure the safety of workers and equipment and facilities.
Dear, I'm glad to answer for you: the first article: the safety production responsibility system standardizes the safety production responsibility of all units, managers at all levels and each employee within the scope of their respective responsibilities, it is an important guarantee for the implementation of the safety production policy, is the implementation of "management of production must first manage safety", "safety production, everyone is responsible" specific measures, is an important organizational guarantee to ensure safety production, but also an effective means to achieve safety management goals. >>>More
The points are too little, and five points are not enough. At least 100 percent.
Personally, I don't think there is anything most appropriate, because it is the words of the wife to her husband, which is a lot of concern, that kind of mood can not be fully expressed in any language, even if it is a simple sentence "must pay attention to safety", although such words are simple, but contain a lot of feelings of the wife, as a husband is able to feel the wife's concern.