CN112531678A - Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise - Google Patents
Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise Download PDFInfo
- Publication number
- CN112531678A CN112531678A CN202011212515.XA CN202011212515A CN112531678A CN 112531678 A CN112531678 A CN 112531678A CN 202011212515 A CN202011212515 A CN 202011212515A CN 112531678 A CN112531678 A CN 112531678A
- Authority
- CN
- China
- Prior art keywords
- voltage
- low
- power supply
- workshop
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a power supply method and a power supply system for reducing the power consumption cost of a 10KV power utilization enterprise, and relates to the technical field of enterprise power supply, wherein the method comprises the steps of reducing the voltage on a 10KV high-voltage bus and then transmitting the voltage to a 380V/220V low-voltage bus; the voltage of the 380V/220V low-voltage bus is boosted and then transmitted to a high-voltage cable. The system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage electric equipment and a power supply cable. The capacity of the parallel step-down transformer is reasonably configured according to the distribution condition of the electrical load of an enterprise, and the waste of repeated abundant capacity of the independent power supply transformer is avoided. Therefore, the expenditure of basic capacity cost is greatly saved, and the electric power cost of an enterprise is saved.
Description
Technical Field
The invention relates to the technical field of enterprise power supply, in particular to a power supply method and a power supply system for reducing the power consumption cost of a 10KV power consumption enterprise.
Background
At present, raw material enterprises widely use high-power high-voltage motors, such as a high-voltage 1000KW mill, as primary-side current collectors (current collectors directly connected to a high-voltage bus of 10 KV), and the high-voltage motors charge basic capacity fees, which brings great power cost pressure to the enterprises. The load change of the high-pressure mill is large, the load factor is not high generally, and the power configuration is large. The simultaneous working coefficient and the demand coefficient of a plurality of high-voltage motors are considered, the actual total load allowance is large, and the allowance is also large in consideration of selection of a transformer. In addition, distribution transformers are distributed and arranged, each distribution transformer works independently, certain design allowance needs to be considered, the allowance of a plurality of distribution transformers is large, the total transformer capacity of an enterprise is overlarge, and meanwhile, the basic capacity cost is high.
Disclosure of Invention
In order to overcome the above problems or at least partially solve the above problems, embodiments of the present invention provide a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise, so as to save the expenditure of a basic capacity fee and save the power cost of the enterprise.
The embodiment of the invention is realized by the following steps:
on one hand, the invention provides a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise, which comprises the following steps:
s1: acquiring the distribution condition of the electric load of each workshop of a target enterprise;
s2: marking a workshop in which electrical appliances needing to be connected to a 10KV high-voltage bus are located as a high-voltage workshop, and marking a workshop connected to a 380V/220V low-voltage bus as a low-voltage workshop;
s3: the voltage on the 10KV high-voltage bus is reduced and then transmitted to a 380V/220V low-voltage bus, and the 380V/220V low-voltage bus is connected to a low-voltage workshop; the 380V/220V low-voltage bus is boosted and then transmitted to a high-voltage cable, and an electric appliance in a high-voltage workshop is connected to the high-voltage cable.
In some embodiments of the present invention, in step S1, the distribution of the electrical loads of each plant includes:
the total active power load of the workshop;
the total reactive power load of the workshop;
electric appliances in the workshop need to be connected with a high-voltage bus of 10KV, and high-voltage loads are required;
the electric appliances in the workshop need to be connected to a 380V/220V low-voltage bus to form low-voltage loads.
In some embodiments of the present invention, in step S3, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after stepping down includes:
s31: a step-down transformer is connected in parallel between the 10KV high-voltage bus and the 380V/220V low-voltage bus.
In some embodiments of the present invention, in step S3, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after stepping down the voltage further includes:
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of each workshop.
In some embodiments of the present invention, in step S3, the step of boosting the 380V/220V low voltage bus and transmitting the boosted voltage to the high voltage cable includes:
the low-voltage side of the step-up transformer is connected to a 380V/220V low-voltage bus through a low-voltage distribution cabinet.
In some embodiments of the present invention, in step S3, the step of boosting the 380V/220V low-voltage bus and transmitting the boosted voltage to the high-voltage cable further includes:
the high-voltage motor is connected to the high-voltage side of the step-up transformer through the high-voltage starting cabinet.
In some embodiments of the invention, step S2 further comprises:
s21: the low-voltage distribution device is connected in parallel with a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of a low-voltage workshop.
In some embodiments of the present invention, the low voltage distribution device is connected in parallel to a 380V/220V low voltage bus through a power supply cable to serve as a power supply for a distribution cabinet of each workshop.
On the other hand, the invention also provides a power supply system for reducing the power consumption cost of a 10KV power consumption enterprise, wherein the system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage power consumption equipment and a power supply cable;
a plurality of step-down transformers connected in parallel;
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through the power supply cable to serve as a power supply of each workshop power distribution cabinet;
the low-voltage side of the boosting transformer is connected to a 380V/220V low-voltage bus through a low-voltage power distribution cabinet;
the high-voltage motor is connected to the high-voltage side of the step-up transformer through a high-voltage starting cabinet.
In some embodiments of the present invention, the power supply cable includes a high voltage power supply cable and a low voltage power supply cable.
The embodiment of the invention at least has the following advantages or beneficial effects:
on one hand, the invention provides a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise, which is implemented by acquiring the power consumption load distribution condition of each workshop of a target enterprise; marking a workshop in which electrical appliances needing to be connected to a 10KV high-voltage bus are located as a high-voltage workshop, and marking a workshop in which electrical appliances are connected to a 380V/220V low-voltage bus and total load allowance is located as a low-voltage workshop; the voltage on the 10KV high-voltage bus is reduced and then transmitted to a 380V/220V low-voltage bus, and the 380V/220V low-voltage bus is connected to a low-voltage workshop; the 380V/220V low-voltage bus is boosted and then transmitted to a high-voltage cable, and the high-voltage workshop is connected with the high-voltage cable. On the other hand, the invention also provides a power supply system for reducing the power consumption cost of a 10KV power consumption enterprise, and the system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage power consumption equipment and a power supply cable.
The method and the system applying the method adopt the measures of reducing voltage and then increasing voltage to ensure the working voltage of the high-voltage motor, and the high-voltage motor does not belong to primary side power receiving equipment at the moment, so that the capacity fee does not need to be collected. The capacity of the parallel step-down transformer is reasonably configured according to the distribution condition of the electrical load of an enterprise, and the waste of repeated abundant capacity of the independent power supply transformer is avoided. Therefore, the expenditure of basic capacity cost is greatly saved, and the electric power cost of an enterprise is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flowchart illustrating an embodiment of a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to the present invention;
fig. 2 is a power supply system diagram of an embodiment of a power supply method for reducing power consumption cost of a 10KV power consumption enterprise according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that if the orientation or positional relationship indicated by the term "up" or the like is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, e.g., as being fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
Referring to fig. 1-2, fig. 1 is a flow chart of a power supply method for reducing power consumption cost of a 10KV power consumption enterprise according to the present invention; fig. 2 is a power supply system diagram of a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to the invention.
On one hand, the implementation provides a power supply method for reducing the power consumption cost of a 10KV power consumption enterprise, and the method comprises the following steps:
s1: acquiring the distribution condition of the electric load of each workshop of a target enterprise;
the distribution condition of the electric load of each workshop comprises the following steps:
the total active power load of the workshop;
the total reactive power load of the workshop;
electric appliances in the workshop need to be connected with a high-voltage bus of 10KV, and high-voltage loads are required;
the electric appliances in the workshop need to be connected to a 380V/220V low-voltage bus to form low-voltage loads.
The design principle of the step is as follows: in consideration of the dispersed arrangement of distribution transformers, each transformer works independently, a certain design allowance is considered, the allowance of a plurality of transformers is too large, the capacity of the total transformer of an enterprise is overlarge, and the basic capacity cost is more to be paid.
S2: marking a workshop in which electrical appliances needing to be connected to the 10KV high-voltage bus are located as a high-voltage workshop, and marking the workshop in which the electrical appliances are connected to the 380V/220V low-voltage bus as a low-voltage workshop;
the design principle of the step is as follows: considering that raw material enterprises widely use high-power high-voltage motors (such as a high-voltage 1000KW mill) as primary side current collectors (current collectors directly connected to high voltage 10 KV), the high-voltage motors charge basic capacity fees which are 26 yuan/KW per month, and for example, 4000KW charges basic capacity fees which are 104000 yuan per month, so that ー power cost pressure is brought to the enterprises. How to cancel the charge of the basic capacity of the high-voltage motor, the working voltage of the high-voltage motor is ensured by taking the measures of reducing the voltage and then increasing the voltage, and the high-voltage motor does not belong to primary side power equipment at the moment, so that the charge of the capacity is not needed.
Taking the step S3 for the step of increasing the pressure after reducing the pressure;
s3: the voltage on the 10KV high-voltage bus is reduced and then transmitted to a 380V/220V low-voltage bus, and the 380V/220V low-voltage bus is connected to a low-voltage workshop; after the 380V/220V low-voltage bus is boosted, a high-voltage cable is transmitted, and a high-voltage workshop is connected with the high-voltage cable.
It should be noted that: the workshop is a basic unit for the internal organization production of the enterprise and is also a first-level organization for the production administration management of the enterprise. Consisting of several sections or production teams. The system is set according to the professional properties of each stage of product production or each component of the product in an enterprise and the professional properties of each auxiliary production activity, and has a factory building or a field, machine equipment, tools, certain production personnel, technical personnel and management personnel which are necessary for completing production tasks. The workshop has four characteristics: (1) it is a collective ground of elements of productivity formed according to the specialized principle. (2) It is an intermediate link in enterprise management between the plant and the production team. (3) The products of the plant are typically semi-finished products (except for finished plants) or in-house products, rather than commodities. (4) The workshop is not an independent commodity production and management unit and generally does not directly generate economic connection to the outside.
It should be noted that: in the present embodiment, the ー secondary side 10KV power supply voltage of the transformer is referred to as high voltage, the 380V and 220V power supply voltage of the secondary side is referred to as low voltage, and usually, the electric devices are all low voltage. The high-voltage end wires before connecting the transformer are buses, and the buses generally adopt bare wires or stranded wires with rectangular or circular cross sections, and the functions of the buses are collecting, distributing and transmitting electric energy. In the embodiment, hard buses or soft buses can be adopted, the hard buses comprise rectangular buses and tubular buses, the soft buses are simple and convenient to construct and low in manufacturing cost, the flexible buses are used outdoors, the distance between the lines cannot be insufficient due to large space and swinging of the conducting wires, and 10KV high-voltage buses are generally used. The 10KV high-voltage bus is applied to self-contained power plants of large-scale substations and large-scale enterprises, has the characteristics of safety, attractiveness and reliability, and can greatly reduce the times of power failure maintenance because the 10KV high-voltage bus slot shell is closed, and can use double-spliced and triple-spliced high-voltage cables to cause faults caused by unbalanced current distribution when large current is transmitted.
Referring to fig. 2, in some embodiments of the present invention, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after stepping down includes:
a step-down transformer is connected in parallel between the 10KV high-voltage bus and the 380V/220V low-voltage bus. After passing through a step-down transformer B1 and a step-down transformer B2, a 10KV power supply converts and outputs 380V voltage or 220V voltage to a 380V/220V low-voltage bus, the 380V/220V low-voltage bus supplies power to a workshop 1, a workshop 2, a workshop 3 and a workshop 4 through low-voltage cables, and the workshop 1, the workshop 2, the workshop 3 and the workshop 4 form a low-voltage electricity utilization workshop which is called a low-voltage workshop. The length of the step-down cable is determined according to the distance between workshops, so that the workshop 1, the workshop 2, the workshop 3 and the workshop 4 can obtain 380V voltage or 220V voltage, the number of the step-down transformers can be adjusted adaptively according to the electricity consumption condition of the workshops, and the step-down cable is not limited to only using two step-down transformers.
It should be noted that, the step-down transformer converts the higher voltage at the input end to output a relatively lower ideal voltage, so as to achieve the purpose of voltage reduction, in this embodiment, the 10KV high-voltage bus transmits the relatively lower ideal voltage converted from the high voltage to the 380V/220V low-voltage bus through the step-down transformer, so as to supply power to the low-voltage workshop.
In some embodiments of the present invention, in step S3, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after stepping down the voltage further includes:
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of each workshop.
In the present embodiment, the distribution cabinet is a final stage device of the distribution system, and the distribution cabinet is a general term of a motor control center, and is used in a case where loads are relatively distributed and loops are relatively few.
In some embodiments of the present invention, in step S3, the step of boosting the 380V/220V low voltage bus and transmitting the boosted voltage to the high voltage cable includes:
the step-down transformer converts the higher voltage of the input end into the relatively lower ideal voltage, thereby achieving the purpose of step-down.
The low-voltage side of the step-up transformer is connected to a 380V/220V low-voltage bus through a low-voltage distribution cabinet. The 380V/220V low-voltage bus converts the 380KV voltage through the step-up transformer B3 and outputs the 10KV voltage to the high-voltage cable line for supplying power to the workshop 5 and the workshop 6, the workshop 5 and the workshop 6 form a high-voltage workshop, the length of the cable is determined according to the distance between the workshops, therefore, the workshop 5 and the workshop 6 can use the 10KV voltage, and the high-voltage motor does not belong to primary side power equipment at the moment, so that capacity charge is not needed. Of course, the number of the step-up transformers can be adaptively adjusted according to the power consumption condition of a workshop, and the step-up transformers are not limited to only two step-up transformers.
In the embodiment, the step-up transformer converts the voltage on the 380V/220V low-voltage bus into the higher ideal voltage and transmits the higher ideal voltage to the high-voltage cable line to supply power to a high-voltage workshop.
In some embodiments of the present invention, in step S3, the step of boosting the 380V/220V low-voltage bus and transmitting the boosted voltage to the high-voltage cable further includes:
the high-voltage motor is connected to the high-voltage side of the step-up transformer through the high-voltage starting cabinet.
In some embodiments of the invention, step S2 further comprises:
s21: the low-voltage distribution device is connected in parallel with a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of a low-voltage workshop.
The low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of each workshop.
On the other hand, the invention also provides a power supply system for reducing the power consumption cost of a 10KV power consumption enterprise, wherein the system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage power consumption equipment and a power supply cable;
a plurality of step-down transformers connected in parallel;
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through the power supply cable to serve as a power supply of each workshop power distribution cabinet;
the low-voltage side of the boosting transformer is connected to a 380V/220V low-voltage bus through a low-voltage power distribution cabinet;
the high-voltage motor is connected to the high-voltage side of the step-up transformer through a high-voltage starting cabinet.
In some embodiments of the present invention, the power supply cable includes a high voltage power supply cable and a low voltage power supply cable.
Similarly, taking into account how to cancel the high-voltage motor basic capacity charge, the measures taken include: through setting up above-mentioned step-down transformer, step-down transformer has a plurality ofly, and a plurality of above-mentioned step-down transformer parallel connection, the voltage step-down back of be step-up again, adopt the operating voltage who ensures high-voltage motor, the high-voltage motor at this moment does not belong to once side powered device, just also need not collect the capacity fee. Through setting up step-up transformer, step-up transformer's low-voltage side passes through low-voltage distribution cabinet and connects on 380V/220V low-voltage bus, rationally configures parallelly connected step-down transformer capacity according to enterprise's power consumption load distribution condition, has avoided the repeated waste of abundant capacity of independent power supply transformer. Therefore, the expenditure of basic capacity cost is greatly saved, the electric power cost of an enterprise is saved, in practical application, the system can save more than 75 ten thousand yuan for the enterprise year after being used for more than one year compared with the original power supply scheme (1 transformer is arranged in each workshop), the economic benefit is considerable, and the system is worthy of popularization and use by the enterprise.
In summary, in an aspect of the embodiments of the present invention, a power supply method for reducing power consumption cost of a 10KV power consumption enterprise is provided, in which power consumption load distribution conditions of workshops of a target enterprise are obtained; marking a workshop in which electrical appliances needing to be connected to a 10KV high-voltage bus are located as a high-voltage workshop, and marking a workshop in which electrical appliances are connected to a 380V/220V low-voltage bus and total load allowance is located as a low-voltage workshop; the voltage on the 10KV high-voltage bus is reduced and then transmitted to a 380V/220V low-voltage bus, and the 380V/220V low-voltage bus is connected to a low-voltage workshop; the 380V/220V low-voltage bus is boosted and then transmitted to a high-voltage cable, and the high-voltage workshop is connected with the high-voltage cable. On the other hand, the invention also provides a power supply system for reducing the power consumption cost of enterprises, and the system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage power consumption equipment and a power supply cable.
According to the method, whether the total load allowance exists in each workshop or not is obtained, and whether the electric appliances in the workshops need to be connected to the 10KV high-voltage bus or the 380V/220V low-voltage bus is obtained, so that the capacity of the parallel step-down transformer can be reasonably configured according to the distribution condition of the electric loads of enterprises, and the waste of the repeated abundant capacity of the independent power supply transformer is avoided. The working voltage of the high-voltage motor is ensured by taking the measures of reducing the voltage and then increasing the voltage, and the high-voltage motor does not belong to primary side power equipment at the moment, so that the capacity fee does not need to be collected.
In this system, the step-down transformer and the step-up transformer are provided, and the step-down and step-up measures are taken to ensure the operating voltage of the high-voltage motor, so that the high-voltage motor does not belong to the primary-side power receiving device, and the capacity fee does not need to be charged. The capacity of the parallel step-down transformer is reasonably configured according to the distribution condition of the electrical load of an enterprise, and the waste of repeated abundant capacity of the independent power supply transformer is avoided. Therefore, the expenditure of basic capacity cost is greatly saved, and the electric power cost of an enterprise is saved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A power supply method for reducing power consumption cost of a 10KV power consumption enterprise is characterized by comprising the following steps:
s1: acquiring the distribution condition of the electric load of each workshop of a target enterprise;
s2: marking a workshop in which electrical appliances needing to be connected to a 10KV high-voltage bus are located as a high-voltage workshop, and marking a workshop connected to a 380V/220V low-voltage bus as a low-voltage workshop;
s3: the voltage on the 10KV high-voltage bus is reduced and then transmitted to a 380V/220V low-voltage bus, and the 380V/220V low-voltage bus is connected to a low-voltage workshop; the 380V/220V low-voltage bus is boosted and then transmitted to a high-voltage cable, and the high-voltage workshop is connected with the high-voltage cable.
2. A power supply method for reducing the power consumption cost of a 10KV power consumption enterprise as claimed in claim 1, wherein in step S1, the distribution of the power consumption load of each workshop comprises:
the total active power load of the workshop;
the total reactive power load of the workshop;
electric appliances in the workshop need to be connected with a high-voltage bus of 10KV, and high-voltage loads are required;
the electric appliances in the workshop need to be connected to a 380V/220V low-voltage bus to form low-voltage loads.
3. The power supply method for reducing the power consumption cost of the 10KV power consumption enterprise according to claim 1, wherein in the step S3, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after the voltage is reduced comprises the following steps:
s31: a step-down transformer is connected in parallel between the 10KV high-voltage bus and the 380V/220V low-voltage bus.
4. The power supply method for reducing the power consumption cost of the 10KV power utilization enterprise according to claim 1, wherein in the step S3, the step of transmitting the voltage on the 10KV high-voltage bus to the 380V/220V low-voltage bus after stepping down further comprises:
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of each workshop.
5. The power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to claim 1, wherein in step S3, the step of boosting the 380V/220V low-voltage bus and transmitting the boosted voltage to the high-voltage cable comprises the following steps:
the low-voltage side of the step-up transformer is connected to a 380V/220V low-voltage bus through a low-voltage distribution cabinet.
6. The power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to claim 1, wherein in step S3, the step of boosting the 380V/220V low-voltage bus and transmitting the boosted voltage to the high-voltage cable further comprises:
the high-voltage motor is connected to the high-voltage side of the step-up transformer through the high-voltage starting cabinet.
7. The power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to claim 1, wherein the step S2 further comprises:
s21: the low-voltage distribution device is connected in parallel with a 380V/220V low-voltage bus through a power supply cable to be used as a power supply of a distribution cabinet of a low-voltage workshop.
8. A power supply method for reducing the power consumption cost of a 10KV power consumption enterprise according to claim 5, wherein the low-voltage power distribution device is connected in parallel to a 380V/220V low-voltage bus through a power supply cable to serve as a power supply of a power distribution cabinet of each workshop.
9. A power supply system for reducing the power consumption cost of a 10KV power utilization enterprise is characterized by being applied to the method of any one of claims 1 to 8, and the system comprises a step-down transformer, a low-voltage distribution device, a step-up transformer, a high-voltage motor, low-voltage power utilization equipment and a power supply cable;
the step-down transformers are connected in parallel;
the low-voltage distribution device is connected in parallel to a 380V/220V low-voltage bus through the power supply cable to serve as a power supply of each workshop power distribution cabinet;
the low-voltage side of the boosting transformer is connected to a 380V/220V low-voltage bus through a low-voltage power distribution cabinet;
the high-voltage motor is connected on the high-voltage side of the step-up transformer through a high-voltage starting cabinet.
10. The power supply system for reducing the electricity consumption cost of a 10KV electricity-consuming enterprise according to claim 9, wherein the power supply cables comprise a high-voltage power supply cable and a low-voltage power supply cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011212515.XA CN112531678A (en) | 2020-11-03 | 2020-11-03 | Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011212515.XA CN112531678A (en) | 2020-11-03 | 2020-11-03 | Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112531678A true CN112531678A (en) | 2021-03-19 |
Family
ID=74979473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011212515.XA Pending CN112531678A (en) | 2020-11-03 | 2020-11-03 | Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112531678A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064548U (en) * | 1990-03-03 | 1990-10-24 | 沈阳市动力机械电器厂 | Movable, high voltage electricity transforming devices for use in the open air |
| CN2567865Y (en) * | 2002-03-08 | 2003-08-20 | 长沙久莹电力电子设备有限公司 | DC bus structure type high-tension high-low-high high-tension frequency control of motor speed device |
| JP2005341668A (en) * | 2004-05-25 | 2005-12-08 | Hitachi Ltd | Voltage regulator and voltage regulating method |
| CN105788836A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Transformer for low-voltage power transmission line |
| CN110208630A (en) * | 2019-07-01 | 2019-09-06 | 云南电力技术有限责任公司 | A kind of power distribution network real model experiment platform |
| CN111668940A (en) * | 2020-07-03 | 2020-09-15 | 中国人民解放***箭军工程设计研究院 | Power station control system and control method |
-
2020
- 2020-11-03 CN CN202011212515.XA patent/CN112531678A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064548U (en) * | 1990-03-03 | 1990-10-24 | 沈阳市动力机械电器厂 | Movable, high voltage electricity transforming devices for use in the open air |
| CN2567865Y (en) * | 2002-03-08 | 2003-08-20 | 长沙久莹电力电子设备有限公司 | DC bus structure type high-tension high-low-high high-tension frequency control of motor speed device |
| JP2005341668A (en) * | 2004-05-25 | 2005-12-08 | Hitachi Ltd | Voltage regulator and voltage regulating method |
| CN105788836A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Transformer for low-voltage power transmission line |
| CN110208630A (en) * | 2019-07-01 | 2019-09-06 | 云南电力技术有限责任公司 | A kind of power distribution network real model experiment platform |
| CN111668940A (en) * | 2020-07-03 | 2020-09-15 | 中国人民解放***箭军工程设计研究院 | Power station control system and control method |
Non-Patent Citations (1)
| Title |
|---|
| 周海东等: "浅析小型热电厂厂用电接线", 《中国水运(下半月)》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bacha et al. | Photovoltaics in microgrids: An overview of grid integration and energy management aspects | |
| Zhang et al. | Optimal microgrid control and power-flow study with different bidding policies by using powerworld simulator | |
| Leão et al. | The future of low voltage networks: Moving from passive to active | |
| WO2012175332A1 (en) | Device for controlling the load of the phases of a three-phase energy network | |
| CN208094204U (en) | A kind of electric vehicle and power grid energy two-way exchange system | |
| KR20200079755A (en) | Microgrid system considering load environment and the Methods of operation | |
| CN104333036B (en) | Multi-source coordination control system | |
| CN102103720A (en) | Risk-based micro power grid distributed power generation standby optimized configuration method | |
| CN103746404A (en) | Method for evaluating stability of wind-solar-fire bundled DC (Direct Current) delivering system | |
| CN104569527B (en) | A kind of batch meter for low pressure distributed photovoltaic power generation | |
| Yuan | Rural electrification goes local: recent innovations in renewable generation, energy efficiency, and grid modernization | |
| CN211790770U (en) | Original electric power capacity-increasing voltage-stabilizing system of base station | |
| EP3647108A1 (en) | Charging assembly for motor vehicles with multiple energy sources | |
| DE102020212610A1 (en) | Process for controlling power and heat exchanges between multiple energy systems using a central control platform | |
| CN108347067A (en) | A kind of microgrid framework and control method containing battery energy storage and generator | |
| DE102011010791A1 (en) | Grid-connected system for local production of renewable electric energy, has power management unit having local energy storage connected to local load and external power supply system | |
| Williamson et al. | Project Edison: Smart-DC | |
| Chauhan et al. | DC microgrid in residential buildings | |
| CN110380506A (en) | A kind of distributed multiple-connected battery system for prefabricated cabin formula unit equipment | |
| CN207398833U (en) | A kind of multilayer closed loop power distribution system suitable for intelligent building | |
| CN105960746A (en) | Methods to form and operate multi-terminal power systems | |
| Hayes | Distribution generation optimization and energy management | |
| CN112531678A (en) | Power supply method and system for reducing power consumption cost of 10KV power consumption enterprise | |
| CN113544960A (en) | Multi-port power converter apparatus | |
| CN112821374A (en) | Intelligent direct-current micro-grid system supporting plug and play |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
|
| RJ01 | Rejection of invention patent application after publication |