CN110763912A - Power saving rate verification method of main line type power saving equipment in construction power distribution system - Google Patents
Power saving rate verification method of main line type power saving equipment in construction power distribution system Download PDFInfo
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Abstract
The invention discloses a power saving rate verification method of a main line type power saving device in a construction power distribution system, which comprises the following steps: (1) determining main electric equipment of a work point; (2) selecting a base period and a statistical report period; (3) installing a main line type power saving device, switching to a non-energy-saving mode, and entering a basic period; (4) measuring the actual electricity consumption of each procedure in a measurement time period in a basic period; (5) measuring the total electricity consumption in the basic period; (6) the equipment is switched to an energy-saving mode and enters a statistical report period; (7) measuring the actual electricity consumption of each procedure in each measurement time period in a statistical report period; (8) measuring and counting the total electricity consumption in a report period; (9) and calculating the power saving rate of the product and the power saving rates of different working procedure time periods in unit time. The invention takes two indexes of the power saving rate of the product and the power saving rates of different process measurement time periods as the verification indexes of the power saving rate of the main line type power saving equipment in the construction power distribution system, can reflect the condition of a construction site and provides reference for improving the power quality in the power distribution system.
Description
Technical Field
The invention relates to the technical field of construction power distribution systems, in particular to a power saving rate verification method of a main line type power saving device in a construction power distribution system.
Background
At present, equipment capable of effectively improving power quality and realizing energy saving is mainly divided into a terminal type and a main line type according to the installation position in a power distribution system. The terminal type equipment is equipment for saving energy and improving local or single equipment or instruments, and loss of other parts in a power distribution system still exists, so that the situation that overall electric energy pollution or three-phase imbalance aggravates due to local transformation can occur in the actual use process of the terminal type equipment. The main line type equipment starts from the root of electric energy loss, integrally improves the power quality in the power distribution system, can play the roles of energy saving and protection on all equipment, instruments, circuits, switches and the like in the power distribution system, and is a more ideal power saving product compared with terminal type equipment.
At present, the verification method for power saving of the trunk line type power saving equipment usually adopts four same verification methods, namely: the verification is performed under the same load, the same time and the same environment. However, the method is only an ideal state verification method, and the strict meaning of 'four-identity' in actual production and life is difficult to realize, and particularly in the infrastructure construction industry, the 'four-identity' verification method has very strict realization conditions due to the conditions that the working procedures are complex, the time change is large, the types and the quantity of construction equipment are large, the construction electricity is greatly influenced by the environment and the construction working procedures and the like in the construction field. Moreover, the infrastructure construction industry can not really reflect the power saving rate conditions under different construction modes and procedures only by verifying the power saving rate by the 'same four methods'.
Therefore, a new idea is needed for effective verification of the power saving rate of the product in the infrastructure construction industry.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a power saving rate verification method of a main line type power saving device in a construction power distribution system, which adopts the following technical scheme:
a power saving rate verification method of a main line type power saving device in a construction power distribution system comprises the following steps:
(1) determining main electric equipment in a range of a power distribution system of a test work point, wherein the number of working procedures in one period of work point construction operation is n, and n is more than or equal to 1;
(2) selecting a base period and a statistical report period of the power saving rate of a test product; the periods specifically refer to time periods in which no power saving measures are implemented; the statistical report period specifically refers to a time period after the power saving measures are implemented;
(3) installing the trunk line type power saving equipment according to requirements and carrying out debugging and testing, switching to a non-energy-saving mode after the equipment is normal, and entering a basic period of a product power saving rate test;
(4) setting a measurement time period T for each processiAnd i is 1,2,3 … … n, and measuring the actual electricity consumption E 'of each process in the respective measuring time periods in the basic period of the product electricity saving rate test'off,i，i＝1,2,3……n；
(5) After the base period is finished, measuring the total power consumption of the product in the base period by the power saving rate test;
(6) switching the main line type power saving equipment to an energy saving mode, and entering a statistical report period of a product power saving rate test;
(7) measuring actual electricity consumption E 'of each process in each measurement time period in a statistical report period of the power saving rate test of the product'on,i，i＝1,2,3……n；
(8) After the statistical report period is finished, measuring the total power consumption of the product in the same report period by the power saving rate test;
(9) under the same working condition, the steps (3) to (8) are circulated for m times, wherein m is more than or equal to 2, and the average value of each datum is taken;
(10) the power saving rate of the product and the power saving rates of different working procedure time periods in unit time are calculated according to the following formulas:
① power saving rate of product
In the formula (I), the compound is shown in the specification,Eoffthe average power consumption of the product power saving rate in the m times of base periods is calculated; eonThe average power consumption of the power saving rate of the product in the m statistical report periods is calculated;
② Power saving rate in different process measurement time periods
In the formula, Eoff,iAnd Eon,iThe average electricity consumption of each process in the m times of base period and the statistical report period is respectively.
Preferably, in step (4), the time period T is measured1＝T2＝T3……Tn15 minutes.
Further, in the step (3), after the installation of the main line type power saving device is completed, an electric energy meter meeting the requirements of the GB/T17215.701-2011 standard electric energy meter is installed at the front end of the main line type power saving device so as to measure the electric energy consumption.
Compared with the prior art, the invention has the following beneficial effects:
considering the complex power consumption situation of the construction site of the capital construction industry, the invention introduces concepts and calculation modes of basic period, statistical report period, basic period average power consumption, statistical report period average power consumption and the like on the basis of the four-same verification method, provides two indexes of comprehensive product power saving rate and unit time (preferably 15 minutes) power saving rate of different process periods as verification indexes of the power saving rate of the main line type power saving equipment in the construction power distribution system aiming at construction work points of different industries, thus effectively reflecting the overall use effect of the power saving equipment in the construction site, therefore, the user can intuitively and clearly know or estimate the economic benefit of the trunk-type power saving equipment, meanwhile, the method can start from the microcosmic view, the electricity saving rate of each construction procedure in unit time is clear, and the aim of integrally and locally combining is achieved. The power saving rate verification method designed by the invention can perfectly match and reflect the condition of a construction site, and really provides valuable and meaningful reference for improving the power quality in a subsequent power distribution system.
Detailed Description
The present invention is further illustrated by the following examples, which include, but are not limited to, the following examples.
Examples
The invention provides a method for verifying the power saving rate of a trunk line type power saving device in a construction power distribution system, which can effectively embody the integral use effect of the power saving device on a construction site, and the flow is as follows:
(1) determining main electric equipment in a power distribution system range of a test work point (such as a concrete mixing station, a beam making yard, a tunnel and other work points with different industries), wherein the number of processes in one period of work point construction operation is n, and n is more than or equal to 1;
(2) selecting a base period and a statistical report period of the power saving rate of a test product; the base period specifically refers to a time period in which no power saving measure is implemented; the statistical report period specifically refers to a time period after the power saving measures are implemented;
(3) installing main line type power saving equipment (such as central energy-saving protection equipment) according to requirements and carrying out debugging and testing, switching the equipment to a non-energy-saving mode after the equipment is normal, and entering a basic period of a product power saving rate test;
(4) setting a measurement time period T for each processiAnd i is 1,2,3 … … n, and measuring the actual electricity consumption E 'of each process in the respective measuring time periods in the basic period of the product electricity saving rate test'off,i，i＝1,2,3……n；
(5) After the base period is finished, measuring the total power consumption of the product in the base period by the power saving rate test;
(6) switching the main line type power saving equipment to an energy saving mode, and entering a statistical report period of a product power saving rate test;
(7) measuring actual electricity consumption E 'of each process in each measurement time period in a statistical report period of the power saving rate test of the product'on,i，i＝1,2,3……n；
(8) After the statistics report period is finished, measuring the total power consumption of the product power saving rate test statistics report period;
(9) and (3) circulating the steps (3) to (8) m times, wherein m is more than or equal to 2, and taking the average value of each datum, namely: dividing the sum of the total electricity consumption of the m basic periods by m to obtain the average electricity consumption E of the product with the electricity saving rate in the m basic periodsoffThe unit is kW.h; dividing the sum of the total electricity consumption of the m statistical report periods by m to obtain the average electricity consumption E of the electricity saving rate of the product in the m statistical report periodsonThe unit is kW.h; dividing the sum of the actual electricity consumption of each procedure in each measurement time period in the m times of base periods by m to obtain the average electricity consumption E of each procedure in the m times of base periodsoff,iI is 1,2,3 … … n, and has n groups with the unit of kW.h; dividing the sum of the actual electricity consumption of each procedure in each measurement time period in the m times of statistical report periods by m to obtain the average electricity consumption E of each procedure in the m times of statistical report periodson,iI is 1,2,3 … … n, and has n groups with the unit of kW.h;
(10) the power saving rate of the product and the power saving rates of different working procedure time periods in unit time are calculated according to the following formulas:
① power saving rate of product
② Power saving rate in different process measurement time periods
In the testing process, in order to reflect the scientificity and rationality of the test, the comparison of the test data needs to be ensured under the condition of the same working condition as much as possible; meanwhile, the principle of combining the whole part with the local part is considered, namely the power saving rate of the product and the power saving rates of different working procedures in time period in unit time are comprehensively analyzed. For example, the comparative conditions to be considered for the construction site tests of typical construction states such as concrete mixing stations, beam-making yards, tunnels and the like in the capital construction industry are shown in the following table 1:
TABLE 1 comparative conditions to consider for a typical state of the art job site test
The following is an example of the process of the present invention.
A certain tunnel working point of Zhengwang high-speed railway is provided with 3 400kVA transformers in a parallel connection mode; the main construction equipment comprises: 132kW and 6 electric screw air compressors, 250kW and 1 (standby), 220kW and 1 tunnel ventilator, 55kW and 1 wet spraying mechanical arm, 75kW and 1 concrete trailer pump, 15kW and 4 water pumps, and 50kW of other domestic electricity; after a main line type power-saving device and a metering electric meter (2000/5, namely the reading of the electric meter is increased by 1, and the using electric quantity is 400KW h) are installed on the secondary line side of the station transformer, a data acquisition stage is started, and the main acquired data has two types (a statistical report period is a time period when the energy-saving device is started, and a basic period is a time period when the energy-saving device is closed):
(1) power saving rate of product
In order to effectively verify the power saving rate of the comprehensive product, the data with the following conditions is required to be verified as effective data during data measurement: the excavation amount is the same, the surrounding rock condition is the same, the construction method is the same, and the main electric equipment is the same. The test was cycled 10 times and then averaged. Through the measurement and analysis of data, the power saving rate of the product using the dry line type power saving equipment at the working point is 9.21 percent.
(2) Unit time power saving rate of different working procedure time interval
Comprehensively considering the conditions (loads) of main large-scale electric equipment of the tunnel construction site, dividing the conditions into a drilling stage (generally starting 6 air compressors and 1 ventilator), a guniting stage (generally starting 2 air compressors, 1 ventilator and 1 wet blasting machine), an inverted arch stage, a secondary lining stage, a filling stage (generally starting 1 ventilator and 1 trailer pump), a deslagging stage, a supporting stage, a ventilation stage (generally starting only 1 ventilator), a blasting stage, an idle stage and other 5 conditions (processes) for analysis; meanwhile, data acquisition is used as effective data under the conditions of same time, same process, same surrounding rock conditions, same started main electric equipment and same constructors. The measurement time of each procedure is 15 minutes, and the power saving rate of each stage in unit time is obtained by data acquisition and measurement and calculation as shown in the following table:
| serial number | Different process periods | Power saving rate per unit time |
| 1 | Drilling stage | 18.2％ |
| 2 | Spraying stage | 9.03％ |
| 3 | Inverted arch, secondary lining and filling stage | 0.60％ |
| 4 | Deslagging, supporting and ventilating stages | 5.03％ |
| 5 | Blasting and idle stage | 2.70％ |
By combining the two indexes of the power saving rate of the product and the power saving rates of different working procedure time intervals in unit time, on one hand, a user can intuitively and clearly estimate the economic benefit which can be brought to the user by the currently selected main line type power saving equipment; on the other hand, the user can research and improve the overall or local power saving scheme on the basis of the power saving rate, and further improve or adjust the power saving rate of the product, especially the power saving rate per unit time of each process period (for example, the power saving rate per unit time of the inverted arch, the secondary lining and the filling stage is adjusted by adopting feasible technical means).
Through reasonable research and design, the invention provides two indexes of the power saving rate of the product and the power saving rate of unit time in different working procedure periods to serve as verification indexes of the power saving rate of the main line type power saving equipment in a construction power distribution system, thereby perfectly matching and reflecting the conditions of a construction site and really providing valuable and meaningful reference for improving the power quality in a subsequent power distribution system. Therefore, compared with the traditional 'four-same-part' verification method, the method has outstanding substantive features and remarkable progress.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (3)
1. A power saving rate verification method of a main line type power saving device in a construction power distribution system is characterized by comprising the following steps:
(1) determining main electric equipment in a range of a power distribution system of a test work point, wherein the number of working procedures in one period of work point construction operation is n, and n is more than or equal to 1;
(2) selecting a base period and a statistical report period of the power saving rate of a test product; the periods specifically refer to time periods in which no power saving measures are implemented; the statistical report period specifically refers to a time period after the power saving measures are implemented;
(3) installing the trunk line type power saving equipment according to requirements and carrying out debugging and testing, switching to a non-energy-saving mode after the equipment is normal, and entering a basic period of a product power saving rate test;
(4) setting a measurement time period T for each processiAnd i is 1,2,3 … … n, and measuring the actual electricity consumption E 'of each process in the respective measuring time periods in the basic period of the product electricity saving rate test'off,i，i＝1,2,3……n；
(5) After the base period is finished, measuring the total power consumption of the product in the base period by the power saving rate test;
(6) switching the main line type power saving equipment to an energy saving mode, and entering a statistical report period of a product power saving rate test;
(7) measuring actual electricity consumption E 'of each process in each measurement time period in a statistical report period of the power saving rate test of the product'on,i，i＝1,2,3……n；
(8) After the statistical report period is finished, measuring the total power consumption of the product in the same report period by the power saving rate test;
(9) under the same working condition, the steps (3) to (8) are circulated for m times, wherein m is more than or equal to 2, and the average value of each datum is taken;
(10) the power saving rate of the product and the power saving rates of different working procedure time periods in unit time are calculated according to the following formulas:
① power saving rate of product
In the formula, EoffThe average power consumption of the product power saving rate in the m times of base periods is calculated; eonThe average power consumption of the power saving rate of the product in the m statistical report periods is calculated;
② Power saving rate in different process measurement time periods
In the formula, Eoff,iAnd Eon,iThe average electricity consumption of each process in the m times of base period and the statistical report period is respectively.
2. The power saving rate verification method of a mains-type power saving device in a construction power distribution system according to claim 1, wherein in the step (4), the time period T is measured1＝T2＝T3……Tn15 minutes.
3. The power saving rate verification method of the main line type power saving equipment in the construction power distribution system according to claim 2, characterized in that in the step (3), after the main line type power saving equipment is installed, an electric energy meter meeting the requirements of GB/T17215.701-2011 standard electric energy meter is installed at the front end of the main line type power saving equipment to measure the electric energy consumption.
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