What is the answer to the question “National Knowledge Network Electric Power Safety Production and Emergency Management Competition Question and Answer Bank (18 True or False Questions)”? The answer is below.
National Knowledge Network Question and Answer Bank on Power Generation Safety and Emergency Management (18 true or false questions)
1 Generation companies electricity companies must officially sign and publish the emergency plan on time. 15 working days, submit relevant unit emergency plans to the dispatched office of the National Energy Administration for registration. ()
A. Correct
B. Bad
Correct answer: B
2. safety manager Various company safety management systems and procedures need to be established and improved to improve the ability of operating personnel tojudge, decisively manage and respond to accidents. This is the most effective measure to prevent major accidents in turbine-generator units. ()
A. Correct
B. Wrong
Correct answer: A
3. , power generation enterprises, etc.) establish and improve emergency command organizations and carry out power outage response work over large areas under the guidance of government organizations and command organizations. ()
A. Correct
B. Wrong
Correct answer: A
4. all employees and the embodiment of good habits. ()
A. Correct
B. Wrong
Correct answer: A
5. emergency plans and emergency resource surveys. The development of emergency plans should be based on relevant laws, regulations and administrative systems, closely related to reality, reasonably determine the content andeffectively improve relevance, practicality and operability. ()
A. Correct
B. Wrong
Correct answer: A
6. and the operating unit is responsible for the organization. Prepare and implement the unit emergency plan, and be responsible for the authenticity and practicality of the emergency plan. The responsible person must implement the responsibilities specified in the emergency plan according to the distribution of responsibilities; ()
A. Correct
B. Wrong
Correct answer: A
7. standby operation: The time limit set for the approved end of the construction period serves as a limit. ()
A. Correct
B. Wrong
Correct answer: B
8 Special funds for flood prevention are the guarantee. for flood prevention works, it is necessary to establish special flood prevention funds, reserve sufficient flood prevention equipment,prepare sufficient flood prevention materials in accordance with flood prevention requirements and ensure that special funds and goods are used exclusively. ()
A. Correct
B. Wrong
Correct answer: A
9. hazardous sources Safety assessment and determination of major hazard levels. ()
A. Correct
B. Wrong
Correct answer: A
10. Actual combat exercises are carried out by the relevant participating units and personnel in the form of procedural exercises or test exercises in accordance with emergency plans or emergency procedures, using actual equipment and in real or simulated emergency scenario conditions. Its main objective is to test the effectiveness of mobilization of emergency teams, emergency rescue equipment and other resources, as well as the actual combat capabilities of the organization, and to improve the capabilitiesemergency response cities. ()
A. Correct
B. Bad
Correct answer: A
11 There are elements from the catalog of occupational diseases. employer's workplace. If the dangerous factors of occupational diseases are listed, the dangerous elements should be reported to the local health supervision and management department timely and truthfully and accepted for monitoring. ()
A. Correct
B. Wrong
Correct answer: B
12. the electrocuted person disconnects from the power source. The methods adopted are as follows: () (1) Immediately inform the power supply or user concerned about the power failure (2) Put on insulating gloves and boots and use qualified and appropriate insulating tools; so that the voltage level opens the power switch or fuse in sequence; (3) Throwing bare metal wires shorts the ICrctured to ground, forcing the protective device to operate and disconnecting power. Note that before throwing a bare metal wire, one end of the metal wire must be fixed and reliably grounded, and the other end must be attached to a heavy object to be thrown. Be careful that the thrown end cannot touch the person receiving the electricity. shock or other people. In addition, after throwing the wire, the thrower should quickly leave the grounded wire 8 m away or stand with both feet together to prevent the stepping voltage from hurting people. When throwing short-circuit wires, care must be taken to ensure that an electric arc cannot injure people or that a wire break does not endanger personal safety.
A. Correct
Problems that need to be solved in wind energy
As more wind turbines are connected to the gridau, the impact of wind power on grid power quality has attracted wide attention. The uncertainty of wind resources and the operating characteristics of the wind turbine itself make the output power of the wind turbine fluctuate, which can affect the power quality of the power grid, such as voltage deviation, voltage fluctuation and flicker, harmonics, etc.
Most wind turbines adopt the soft grid connection method, but they still generate a large inrush current when starting. When the wind speed exceeds the wind cut-off speed, the wind turbine automatically exits rated operation. exit state. If all the wind turbines in the entire wind farm operate almost simultaneously, this impact has a very obvious impact on the distribution network. Additionally, changes in wind speed and the shadow effect of the wind turbine tower will cause fluctuations. The spellTie of wind turbines and fluctuations can produce voltage flashes. In the variable frequency range (below 25 Hz), wind turbines will also cause flicker issues on the power grid during normal operation. main negative impacts of wind power generation on grid power quality.
Grid-connected wind power generation should be monitored using a grid-connected wind power monitoring system. power quality, and power quality requirements are clearly defined. The "Wind Turbine Power Quality Measurement and Evaluation Method" (GB/T 20320-2013) currently formulated by the National Standards Committee was issued on the 20th. Officially implemented on October 1, 2014, this standard stipulates the power quality of wind turbines before they are connected to the grid: 1. Voltage fluctuations and flicker 2. Current harmonics, interharmonics and cohigh-frequency components; 3. Response to voltage drops; 4. Measurement of active and reactive power; 5. Network protection; 6. Voltage imbalance.
The current Chinese grid-connected wind power quality system that strictly meets the standards is the power quality monitoring system of Zhiyuan Electronics. Not only is the power quality monitoring device very reliable, but its background software monitoring system is also very mature.
Insufficient capacity of a single machine
According to the investigation on the development of wind power generation technology, it is found that the insufficient capacity of the motor of wind turbines is one of the key issues. faced by current wind energy technology. Recently, wind power generation technology has developed extremely rapidly in recent years, especially the capacity of'a single machine went from the original 600 kW to 1.5 MW. However, judging. From the overall operation of wind technology, the capacity of a single wind power generation machine still cannot meet the current demand for wind power.
Wind resources are unevenly distributed
Wind turbines are an important part of the wind power generation system, and their operating efficiency and safety will directly affect the operating efficiency of the wind energy production system. . At this stage, due to insufficient promotion of wind technology, wind technology reform in many areas is not in place, the safety performance of wind turbines is not high, and wind turbine accidents occur. often occur, which greatly affects normal. operation of the wind system. The overall security and stability of the production systemwind energy will be reduced, which is not conducive to the sustainable development of energy enterprises.
Increase research on wind power generation technology
We understand that in the development process of wind power generation technology, insufficient individual capacity is the main problem facing current wind power generation technology. Therefore, in order to better solve these problems, relevant research departments should intensify their research on wind power generation technology.
In the research and development of wind power generation technologies, we must focus on the actual development of the region, especially on the expansion of the capacity of a single unit in order to meet the demand for wind power generation and wind turbines. with greater capacity are necessary forsupport, increasing the capacity of a single machine cannot be satisfied with the status quo and should be continuously expanded. In addition, expanding the capacity of a single machine will also play a great role in improving the efficiency of wind power. generation.
Based on the current development status and future development trends, the author believes that wind power generation technology is expected to evolve into large-scale wind power generation units. ladder. This is also the inevitable direction of wind power development. generation in the future. This will promote the development of wind energy production in the long term.