Question 2: 0.85 power factor implementation range has now been changed to 0.9 power factor. You see for yourself
Source: Ministry of Water Resources and Electricity, the State Price Bureau document - (83) Water and Electricity Cai Zi No. 215 of the Electricity Administration, the provinces, municipalities and autonomous regions Price Bureau (Committee), the Electricity Bureau: the current national tariff system in the "force rate adjustment of electricity tariffs" since the 1950s since the development and implementation of the promotion of the user installed reactive power compensation equipment, power saving, has played a role. However, over the past twenty years, the situation of both the power grid and the users have undergone great changes, and the method can no longer meet the needs of energy conservation, improving voltage quality and enhancing social and economic benefits. On the basis of long-term, repeated investigation and research, we according to the National Economic Commission recently approved the issuance of the "national power supply and use of electricity planning" of the relevant provisions of the existing "force rate adjustment tariff approach" has been revised, after many discussions, after consulting the views of the development of a new "Power Factor Adjustment Tariff Approach" is now issued for implementation. Considering the users and the electricity sector to implement the new "Power Factor Adjustment Tariff Measures", it still needs some time to prepare, the Electricity Administration can be based on the different circumstances of the region, according to the following requirements for the implementation of the organization: First, has now realized the "Rate Adjustment Tariff Measures" of the users, where the original implementation of the standard value of 0.90 power factor and the original implementation of the 0.85 standard value of the power factor and the actual power factor of December 1983, the power factor has reached 0.90, and the power factor is 0.85, and the actual power factor is 0.90, the power factor has reached 0.90. power factor has reached 0.90 and above, since January 1, 1984, in accordance with the new provisions of the implementation; the rest of the users can be delayed until July 1, 1984, the implementation of which the actual power factor of 0.85 to 0.90 during this period can not be reduced tariffs, 0.85 or less than those who should be charged more tariffs. Secondly, for those users who have not implemented the "Power Factor Adjustment Tariff Measures", the relevant provisions of the new "Power Factor Adjustment Tariff Measures" can be applied by the respective electricity administrations in different situations, with the formulation of measures to be implemented step by step. However, the implementation of the new provisions should not be later than the end of 1986. III. The scope of the implementation of the two-part tariff system remains unchanged. Fourthly, please feel free to report to the Ministry of Water Resources and Electricity any problems encountered in the implementation in different places. (83) Water and Electricity Cai Zi No. 215 Document December 2, 1983 I. In view of the characteristics of electric power production, the user power factor of electricity has an important impact on the full utilization of power generation, supply, and power equipment, saving electricity and improving the quality of voltage. In order to improve the user's power factor and keep it balanced, in order to improve the power supply and use of both sides and the economic benefits of society, especially the development of this approach. Second, the standard value of power factor and its scope of application 1. power factor standard 0.90, applicable to 160 kVA or more high-voltage power supply industrial users (including community industrial users), equipped with load-adjusted voltage device high-voltage power supply power users and 3200 kVA and above high-voltage power supply power drainage and irrigation stations; 2. power factor standard 0.85, applicable to 100 kVA (kW) and above, other industrial users (including community industrial users). Power factor standard 0.85, applicable to 100 kVA (kW) and above for other industrial users (including community industrial users), 100 kVA (kW) and above for non-industrial users and 100 kVA (kW) and above for electric power drainage and irrigation stations; 3. Power factor standard 0.80, applicable to 100 kVA (kW) and above for agricultural users and wholesale users, but the large industrial users have not been classified by the electric power industry to directly manage the wholesale users, the power factor standard should be 0.85. 3. The power factor standard shall be 0.85. 3. Calculation of power factor 1. Where power factor adjustment tariffs are implemented, users shall be equipped with reactive power meters with anti-inversion devices, and the average monthly power factor shall be calculated according to the users' monthly practical active and reactive power; 2. Where reactive power compensation equipment is installed and there is a possibility of inverting the reactive power to the grid, the users shall put in or remove part of the reactive power compensation equipment in a timely manner along with the changes of their loads and voltages, and the electricity department and the power factor shall be calculated at the billing and metering points. The department shall also install reverse reactive power meters with anti-reverse devices at the billing metering points, and calculate the monthly average power factor according to the absolute value of the sum of the reactive power sent backward and the practical reactive power; 3. According to the needs of the power grid, the large users shall implement the assessment of the peak power factor, and install the meters that record the active and reactive power during the peak hours, so as to calculate the monthly average peak power factor; the peak and low valley hours shall be calculated separately for power factor calculation for some of the users; and the peak and low valley hours shall be calculated separately for power factor calculation for some users. For some users, the power factor can also be calculated separately for the peak and trough periods, which shall be formulated by the provincial, municipal and autonomous power bureaus or power grid administrations and reported to the Ministry of Water Resources and Electric Power for approval and implementation. Fourth, the adjustment of electricity according to the calculation of the power factor, higher or lower than the prescribed standard, in accordance with the provisions of the tariffs calculated in accordance with the monthly electricity, and then in accordance with the "Power Factor Adjustment Tariff Table" (Table I, II, III,) the percentage increase or decrease in electricity charges. If the power factor of the user is between the two numbers listed in the "Power Factor Adjustment Tariff Table", the calculation will be rounded up. V. According to the specific conditions of the power grid, the power factor of electricity consumption can reach the prescribed standard without additional compensation equipment, or ...... >>
Question 3: Does the national grid have requirements for the power factor of power-using equipment, and what is the range of requirements? No constraints on domestic and commercial, only on the industrial side of the requirements, but not mandatory power factor must be in what range, but through the tariff regulation, that is, the so-called "active power" and "reactive power". However, with the increasing load of domestic appliances, especially the use of large numbers of air-conditioners, there is now a considerable clamor for the introduction of industrial-style differential metering. View more answers>>
Question 4: What is the power factor requirement of the state regulations with the enterprise Oh
In our company engaged in the research and development of reactive power compensation equipment, production, sales of 29 years, there are often novices to us to ask a similar question. In this way:
Different power companies have different requirements. The state regulations are as follows:
Power factor standard 0.90: applies to 160 kVA or more high-voltage power supply industrial users, high-voltage power supply power users equipped with load-adjusted voltage devices, and 3200 kVA and above high-voltage power supply power drainage and irrigation stations;
Power factor standard 0.85, applies to 100 kVA (kilowatts) and above, other industrial users
The power factor standard of 0.80 applies to agricultural users and wholesale users of 100 kVA (kilowatts) and above, except for large industrial users not classified as wholesale users under the direct management of the electricity industry, for which the power factor standard shall be 0.85.
This The document online has the full text, you can find to see. More information on reactive power, power factor and other issues can be found and discussed here: zhidao.baidu/... =36954
Question 5: What is the minimum standard for power factor cosφ? There are differences between the regions. First, the capacity of 80kvA and the following users do not implement the power factor assessment, second, the capacity of 100kvA and above the special variable users minimum 0.8 assessment.
Question 6: What is the power factor In the AC circuit, the phase difference between the voltage and current (Φ) of the cosine is called the power factor, expressed by the symbol cos Φ, numerically, the power factor is the ratio of the active power and apparent power, i.e., cos Φ = P/S
The size of the power factor is related to the nature of the circuit loads, such as incandescent light bulbs, resistive furnaces and other resistive loads. The power factor of 1, generally with inductive or capacitive load circuit power factor is less than 1. Power factor is an important technical data of the power system. Power factor is a coefficient that measures the efficiency of electrical equipment. Low power factor, that the circuit for alternating magnetic field conversion of reactive power, thus reducing the utilization of equipment, increasing the line power supply losses. Therefore, the power supply department of the power factor of the power unit has certain standard requirements.
(1) the most basic analysis: take the equipment as an example. For example: the power of the device is 100 units, that is, there are 100 units of power delivered to the device. However, because of the inherent reactive power losses in most electrical systems, only 70 units of power can be used. Unfortunately, although only 70 units are used, 100 units are paid for. In this example, the power factor is 0.7 (most equipment will be fined if it has a power factor of less than 0.9), and this reactive power loss is found primarily in motorized equipment (e.g., blowers, water pumps, compressors, etc.), also known as inductive loads. Power factor is a measure of motor efficiency.
(2) Basic analysis: Each motor system consumes two large powers, which are the true useful power (called kilowatts) and reactive reactive power. Power factor is the ratio between useful power and total power. The higher the power factor, the higher the ratio between useful power and total power, and the more efficient the system operation.
(3) Advanced Analysis: In inductive load circuits, the current waveform peak occurs after the voltage waveform peak. The separation of the two waveform peaks can be expressed in terms of power factor. The lower the power factor, the greater the separation of the two waveform peaks. Pauling brings the two peaks back together, thus improving the efficiency of the system operation.
Question 7: What are the standard requirements of the power supply department of the power factor of the power consumption units According to the capacity of the dedicated transformer to be approved; usually 80kvA and the following are not assessed, 100kvA 0.80 assessment, 125kvA 0.85 assessment, 160kvA and above the dedicated transformer 0.90 assessment of the power factor of the power user requirements "Balance in place".
Question 8: The national standard stipulates that the power factor of residential electricity shall not be less than? Please ask is? Currently the state . The two southern power grid companies for residential living electricity are not force rate assessment. There is no power factor requirement to achieve how much.
Question 9: What is the normal value of the power factor of 35kv Only see the relationship between power factor and capacity, such as the power factor standard 0.90, applies to more than 160 kVA high-voltage power supply industrial customers (including the community industrial customers); power factor standard 0.85, applies to 100 kVA (kilowatts) and above the other industrial customers; power factor standard 0.80. applies to agricultural customers and wholesale customers of 100 kVA (kW) and above.
Question 10: What are the international and national standards for motor power factor? What are the specifics? 20 points You are too general to answer. Different specifications of the electric motor has different technical conditions, corresponding to different national standards or ministerial standards. The standard has the requirement of power factor.
Y, Y2, Y3 on the national standard have to specify the corresponding power factor,
That type of motor or power to reach a certain number of power factor requirements