CN116365609B - Intelligent transformer area power distribution method and device - Google Patents
Intelligent transformer area power distribution method and device Download PDFInfo
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- CN116365609B CN116365609B CN202310368487.8A CN202310368487A CN116365609B CN 116365609 B CN116365609 B CN 116365609B CN 202310368487 A CN202310368487 A CN 202310368487A CN 116365609 B CN116365609 B CN 116365609B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004364 calculation method Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a power distribution method and device of an intelligent station, wherein the power distribution method of the intelligent station comprises the following steps: the main control terminal obtains the power utilization voltage of the load end of the intelligent transformer area and the power distribution voltage of the high-voltage receiving device; carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage; acquiring real-time power after voltage regulation of an intelligent platform region, and comparing the real-time power with preset operation power to obtain comparison data; and carrying out on-load capacity adjustment of the intelligent platform by combining the comparison data and the working state of the capacity adjustment switch. According to the power distribution method, the load voltage regulation adjustment is carried out on the power distribution work of the intelligent transformer area by combining the working load of the load end and the operation data of the high-voltage receiving device, and the load capacity regulation adjustment is carried out on the operation power of the intelligent transformer area after the load voltage regulation, so that the power distribution quality of the intelligent transformer area is improved, and the power distribution loss of the intelligent transformer area is reduced.
Description
Technical Field
The invention mainly relates to the technical field of power grid distribution, in particular to a power distribution method and device of an intelligent transformer area.
Background
The intelligent transformer area is an important link of intelligent construction of electric power, and a power distribution system of the intelligent transformer area is directly oriented to local power loads, namely, the intelligent transformer area has the function of converting high-voltage electricity transported by a power station and a power distribution station into power consumption of a regional load end, the existing load power consumption is complicated due to development of modern construction, so that the power distribution pressure of the intelligent transformer area is large, the existing power distribution method of the intelligent transformer area generally carries out power distribution voltage adjustment through voltage regulation, but the power distribution method leads to current loss aggravation in the power distribution process of the intelligent transformer area when the power distribution system adjusts the power distribution voltage, and the power distribution quality of the intelligent transformer area is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a power distribution method and device for an intelligent transformer area.
The invention provides a power distribution method of an intelligent station, which comprises the following steps:
the main control terminal obtains the power utilization voltage of the load end of the intelligent transformer area and the power distribution voltage of the high-voltage receiving device;
carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage;
acquiring real-time power after voltage regulation of an intelligent platform region, and comparing the real-time power with preset operation power to obtain comparison data;
and carrying out on-load capacity adjustment of the intelligent platform by combining the comparison data and the working state of the capacity adjustment switch.
Further, the power distribution method further includes:
and the main control terminal acquires the power distribution running state of the intelligent transformer area and performs reactive power compensation according to the power distribution running state.
Further, the main control terminal obtains a power distribution running state of the intelligent transformer area, and performs reactive power compensation according to the power distribution running state, including:
the main control terminal acquires inductive reactive power and capacitive reactive power of the intelligent transformer area distribution operation;
and calculating the total reactive power of the intelligent transformer area by combining the inductive reactive power and the capacitive reactive power.
Further, the on-load voltage regulation according to the power consumption voltage and the distribution voltage includes:
the main control terminal obtains the power load of a load end, and combines the power voltage to carry out analog adjustment on the distribution voltage to obtain an analog adjustment voltage value;
and calculating the analog voltage offset rate after analog voltage regulation according to the analog regulation voltage value, and checking by combining the rated voltage offset rate of the high-voltage receiving device.
Further, the on-load voltage regulation according to the power consumption voltage and the distribution voltage further includes:
and the main control terminal acquires the electricity load of the load end and judges whether the electricity voltage meets the electricity requirement of the load end according to the electricity load.
Further, the main control terminal obtains the power load of the load end, combines the power voltage to perform analog adjustment on the distribution voltage, and obtaining the analog adjustment voltage value includes:
the main control terminal acquires working environment data of the high-voltage receiving device and calculates a voltage limit value of the high-voltage receiving device by combining the distribution voltage;
and selecting different voltage regulating amplitudes within the voltage limit range to obtain a plurality of groups of analog regulating voltage values.
Further, the calculating the analog voltage offset rate after analog voltage adjustment according to the analog adjustment voltage value, and the verifying in combination with the rated voltage offset rate of the high voltage receiving device includes:
calculating the analog voltage offset rate of each group of analog adjustment voltage, calculating the difference value between each group of analog voltage offset rate and the rated voltage offset rate, comparing the calculation results, and selecting the data with the smallest difference value result for voltage adjustment.
Further, the on-load capacity-adjusting adjustment of the intelligent platform area by combining the comparison data and the working state of the capacity-adjusting switch comprises:
and acquiring the gear state of the capacity-adjusting switch, and switching the gear of the capacity-adjusting switch according to the comparison data.
Further, the on-load capacity-adjusting adjustment of the intelligent platform area by combining the comparison data and the working state of the capacity-adjusting switch further comprises:
and switching the capacity-regulating switch to a capacity-regulating mark gear for a preset time.
The invention also provides a power distribution device of the intelligent transformer area, which comprises:
and a data acquisition module: the main control terminal obtains the power utilization voltage of the load end of the intelligent transformer area and the power distribution voltage of the high-voltage receiving device;
on-load voltage regulation module: carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage;
and an analysis and comparison module: acquiring real-time power after voltage regulation of an intelligent platform region, and comparing the real-time power with preset operation power to obtain comparison data;
on-load capacity-adjusting module: and carrying out on-load capacity adjustment of the intelligent platform by combining the comparison data and the working state of the capacity adjustment switch.
The invention provides a power distribution method and device for an intelligent transformer area, wherein the power distribution method is used for carrying out on-load voltage regulation on power distribution work of the intelligent transformer area by combining working load of a load end and operation data of a high-voltage receiving device, and carrying out on-load capacity regulation on the operation power of the intelligent transformer area after on-load voltage regulation, so that the power distribution quality of the intelligent transformer area is improved, and the power distribution loss of the intelligent transformer area is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for intelligent substation area distribution in an embodiment of the invention;
fig. 2 is a schematic diagram of a distribution system structure of an intelligent transformer area in an embodiment of the present invention;
FIG. 3 is a flowchart of an on-load voltage regulation adjustment method according to an embodiment of the invention;
fig. 4 is a flow chart of a capacity adjustment method of the intelligent transformer area distribution system in the embodiment of the invention;
fig. 5 is a schematic diagram of an intelligent substation distribution device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 shows a flowchart of a power distribution method of an intelligent transformer area in an embodiment of the present invention, where the power distribution method of the intelligent transformer area includes:
before carrying out on-load voltage regulation adjustment of the intelligent transformer area, reactive power compensation is carried out on the power distribution work of the intelligent transformer area, namely, the main control terminal 21 obtains the power distribution running state of the intelligent transformer area, and reactive power compensation is carried out according to the power distribution running state.
Specifically, the main control terminal 21 obtains a power distribution operation state of the intelligent substation, and performs reactive power compensation according to the power distribution operation state, including:
the main control terminal 21 obtains inductive reactive power and capacitive reactive power of the intelligent transformer area distribution operation, wherein the inductive reactive power refers to the loss of current and voltage generated in the process of mutual inductance transmission by carrying out current and voltage transmission through a current mutual inductance device or a voltage mutual inductance device in a distribution circuit of the intelligent transformer area, so that the inductive reactive power is formed; the capacitive reactive power refers to a loss generated by polarity transfer of charges inside the capacitor in the capacitor, thereby causing the capacitive reactive power to occur in the capacitor.
And calculating the total reactive power of the intelligent transformer area by combining the inductive reactive power and the capacitive reactive power, wherein the total reactive power calculation formula of the intelligent transformer area is as follows:
Q＝Q g -Q r ＝I 2 R g -I 2 R r ；
wherein Q is total reactive power, Q g For inductive reactive power, Q r For the capacitive reactive power, I is the current value of the intelligent district power distribution system, R g R is the resistance of inductive load r Is a capacitive load resistance.
Further, the sign directions of the inductive reactive power and the capacitive reactive power are opposite, that is, the reactive power generated in the capacitor can offset the reactive power generated by the mutual inductance device in part of the distribution system.
Specifically, in the power distribution system of the intelligent transformer area, in the circuit planning of three-phase four wires, a reactive compensation device is connected between phase lines, namely, a capacitor is connected between any two phase lines of the three-phase circuit, so that the mutual inductance current between the phase lines can compensate reactive power through the storage of the capacitor, and the capacity of zero lines and negative lines in the circuit is reduced by using the capacitor between the phase lines to allocate the functional capacity in the circuit through the compensation device, thereby realizing the reactive power compensation of the three-phase unbalance.
S11: the main control terminal 21 obtains the power consumption voltage of the load end 3 of the intelligent substation and the distribution voltage of the high-voltage receiving device 11.
Specifically, fig. 2 shows a schematic structural diagram of an intelligent transformer area power distribution system in an embodiment of the present invention, where the intelligent transformer area power distribution system includes a main control terminal 21, a high voltage receiving device 11, a low voltage power distribution assembly 2 and a load end 3, the main control terminal 21 is disposed in the low voltage power distribution assembly 2, and the high voltage receiving device 11 is connected to the load end 3 based on the low voltage power distribution assembly 2.
Further, the master control terminal 21 can obtain the load information of the load terminal 3, so as to obtain the power consumption voltage of the load terminal 3.
Specifically, the main control terminal 21 is electrically connected to the high voltage receiving device 11, the main control terminal 21 may receive the current voltage value flowing through the high voltage receiving device 11, and the main control terminal 21 may monitor the operation state of the high voltage receiving device 11, that is, the main control terminal 21 may detect the distribution voltage of the high voltage receiving device 11.
Further, the main control terminal 21 is disposed in the low-voltage power distribution assembly 2, and the main control terminal 21 is electrically connected with the load end 3, so that the main control terminal 21 can obtain load data of the load end 3, and intelligent area power distribution adjustment is performed according to the load data of the load end 3, thereby improving accuracy of intelligent area power distribution adjustment.
Specifically, the distribution system of wisdom platform district still includes integral type intelligent transformer 1, high voltage receiving arrangement 11 sets up in the integral type intelligent transformer 1, still be provided with on-load tap changer 12 in the integral type intelligent transformer 1, on-load tap changer 12 is the multi-gear switch, can realize the multistage regulation to distribution system distribution voltage to improve voltage regulation's reliability.
Further, the multi-gear switch can be 10 gears, 12 gears, 15 gears, 17 gears and the like, and the proper multi-gear switch can be selected according to the actual running voltage adjustment requirement of the intelligent transformer area, so that the energy consumption is reduced, the running cost of the intelligent transformer area is reduced, and the cost performance of the intelligent transformer area power distribution system is improved.
S12: and carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage.
Specifically, the on-load voltage regulation according to the power consumption voltage and the distribution voltage includes:
specifically, the master control terminal 21 obtains the power load of the load end 3, and determines whether the power voltage meets the power requirement of the load end 3 according to the power load. The master control terminal 21 can acquire the working load condition of the load end 3 in real time, acquire the number of load devices connected to the load end 3 and the electricity consumption specification of each load device, and acquire the load data of the load end 3 through analysis.
Specifically, fig. 3 shows a flowchart of an on-load voltage regulation and adjustment method in an embodiment of the present invention, where the on-load voltage regulation and adjustment method includes:
s121: the main control terminal 21 obtains the electricity load of the load end 3, and combines the electricity voltage to perform analog adjustment on the distribution voltage to obtain an analog adjustment voltage value.
Specifically, the main control terminal 21 obtains the power load of the load end 3, and performs analog adjustment on the distribution voltage in combination with the power voltage, so as to obtain an analog adjustment voltage value, which includes:
the main control terminal 21 obtains the working environment data of the high-voltage receiving device 11, and calculates the voltage limit value of the high-voltage receiving device 11 by combining the distribution voltage, the main control terminal 21 detects the working state of the high-voltage receiving device 11 in real time through detection devices such as a temperature sensor and an oil level gauge, and calculates the voltage limit value of the high-voltage receiving device 11 according to the working environment data of the high-voltage receiving device 11 detected in real time, and the distribution voltage.
Further, the voltage limit includes a maximum operating voltage of the integrated intelligent transformer 1 in a current operating state and a maximum duration in which the maximum operating voltage can continuously operate.
Specifically, the master control terminal 21 determines whether the intelligent transformer area needs to perform voltage regulation according to the voltage limit value, that is, the master control terminal 21 compares the distribution voltage of the integrated intelligent transformer 1 with the voltage limit value, determines whether the distribution voltage is greater than the voltage limit value, if yes, compares the working time length of the distribution voltage with the maximum time length, and determines whether the working time length is greater than the maximum time length, if yes, performs voltage regulation adjustment of the power distribution system.
Further, the distribution voltage is a transformer working voltage adjusted according to the load data of the load end 3.
Specifically, the main control terminal 21 adjusts the voltage regulation range of the integrated intelligent transformer 1 according to the voltage limit value and the maximum continuous working time, that is, selects different voltage regulation ranges within the voltage limit value range, and obtains multiple groups of analog adjustment voltage values.
Further, through carrying out multiple voltage regulation simulation of different voltage regulation ranges in the range of the voltage limit value, the operation reliability of the power distribution system after voltage regulation is analyzed through multiple groups of simulation voltage regulation data, and therefore the accuracy of voltage regulation and adjustment of the intelligent transformer area is improved.
S122: and calculating an analog voltage offset rate after analog voltage regulation according to the analog regulation voltage value, and checking by combining the rated voltage offset rate of the high-voltage receiving device 11.
Specifically, the calculating the analog voltage offset rate after analog voltage adjustment according to the analog adjustment voltage value, and the verifying in combination with the rated voltage offset rate of the high voltage receiving device 11 includes:
calculating the analog voltage offset rate of each group of analog adjustment voltage, calculating the difference value between each group of analog voltage offset rate and the rated voltage offset rate, comparing the calculation results, and selecting the data with the smallest difference value result for voltage adjustment.
Further, the voltage regulation adjustment includes upshift voltage regulation and downshift voltage regulation, namely through adjustment the voltage regulation switch is right the distribution system of wisdom district carries out upshift voltage regulation or downshift voltage regulation for the distribution voltage of integral type intelligent transformer 1 in the wisdom district satisfies wisdom district load end 3's operation demand.
Further, the voltage offset rate is calculated by: and analyzing to obtain an effective value of the three-phase voltage data after upshift or downshift, calculating a difference value between the effective value and the rated voltage value of the three-phase voltage data according to the rated voltage value of the integrated intelligent transformer 1, and calculating a ratio value between the difference value and the effective value to obtain the adjusted voltage offset rate.
Specifically, the voltage deviation rate of each group of analog voltage regulation data is calculated, and the voltage deviation rate of the analog voltage regulation data is detected through the rated deviation rate, namely, the amplitude of each voltage regulation adjustment is ensured to be within the allowable range of the rated voltage deviation of the intelligent integrated transformer, so that the integrated intelligent transformer 1 after voltage regulation can work within the allowable working range of the rated voltage, and the working stability of the intelligent transformer area after voltage regulation adjustment is improved.
Furthermore, by setting a plurality of groups of voltage regulating analog data, and analyzing and calculating the regulated voltage deviation rate, the analog data with the lowest deviation amplitude of the voltage deviation rate is extracted from the plurality of groups of voltage regulating analog data, so that the influence on the working service life of the integrated intelligent transformer 1 after each voltage regulation and regulation is ensured to be the lowest, and the reliability of the working voltage regulation and regulation of the intelligent transformer area overall power distribution system is improved.
S13: and acquiring real-time power after voltage regulation of the intelligent station area, and comparing the real-time power with preset operation power to obtain comparison data.
Specifically, after the intelligent transformer area completes voltage regulation and adjustment, the main control terminal 21 detects the real-time power of the intelligent transformer area, analyzes the real-time power of the intelligent transformer area, obtains real-time load data of the integrated intelligent transformer 1 in the intelligent transformer area distribution system, obtains an optimal capacitance threshold of the capacitor in the integrated intelligent transformer 1 through analyzing the preset operation power of the intelligent transformer area, compares and analyzes the real-time load data with the optimal capacitance threshold, and then judges whether the intelligent transformer area performs on-load capacity regulation operation.
Further, performing a difference calculation on the real-time load data and the optimal capacitance threshold, comparing a calculation result with a preset threshold variation amplitude, and if the calculation result of the difference calculation is greater than the threshold variation amplitude, performing on-load capacity adjustment operation on the intelligent platform area by the main control terminal 21.
S14: and carrying out on-load capacity adjustment of the intelligent platform by combining the comparison data and the working state of the capacity adjustment switch.
Specifically, the on-load capacity adjustment of the intelligent platform area by combining the comparison data and the working state of the capacity adjustment switch comprises the following steps:
specifically, a gear state of the capacity-adjusting switch is obtained, and gear switching is carried out on the capacity-adjusting switch according to the comparison data. The main control terminal 21 generates a capacity adjustment scheme of the intelligent platform region according to the comparison data, the main control terminal can predict the working state of the intelligent platform region according to the load change of the load end 3 so as to obtain the working prediction load of the intelligent platform region, and the main control terminal 21 can adjust the capacity adjustment scheme according to the prediction load in combination with the actual load and the optimal capacitance threshold.
Specifically, the master control terminal 21 compares the actual load with the optimal capacitance threshold, compares the predicted load with the optimal capacitance threshold, and if both the actual load and the predicted load are greater than the optimal capacitance threshold, the master control terminal 21 adjusts the capacity-adjusting switch to a high-capacity gear to operate, and when both the actual load and the predicted load are less than the optimal capacitance threshold, the master control terminal 21 may switch the capacity-adjusting switch to a low-capacity gear to operate.
Further, when the predicted load is greater than the optimal capacitance threshold, the real-time load is less than the optimal capacitance threshold; or the predicted load is smaller than the optimal capacitance threshold, the real-time load is larger than the optimal capacitance threshold, and after the power distribution system of the intelligent platform region operates for a period of time, the main control system re-detects the real-time load and the predicted load and performs capacity adjustment according to the real-time load and the predicted load.
Further, after the power distribution system of the intelligent transformer area runs for a period of time, when the comparison data between the real-time load and the predicted load and the optimal capacitance threshold is unchanged, the main control terminal 21 adjusts the capacity of the power distribution system of the intelligent transformer area according to the real-time load.
Specifically, fig. 4 shows a flow chart of a capacity adjustment method of the intelligent transformer area distribution system in the embodiment of the invention, where the capacity adjustment method includes:
s141: the main control terminal 21 obtains the real-time operation power of the intelligent substation and determines whether the real-time operation power is greater than a preset operation power.
Specifically, the master control terminal 21 detects the power distribution system after voltage regulation, obtains the real-time operation power of the power distribution system after voltage regulation, compares the real-time operation power of the power distribution system of the intelligent transformer area with the preset operation power, executes step S142 if the real-time operation power is greater than the preset operation power, and executes step S143 if the real-time operation power is less than the preset operation power.
S142: the main control terminal 21 detects whether the capacity-adjusting switch is in a low-capacity gear.
Specifically, the main control terminal 21 detects the working state of the capacity-adjusting switch, and determines whether the capacity-adjusting switch is in a low-capacity gear, if so, the step S144 is entered, and if not, the step S145 is entered.
S143: the main control terminal 21 detects whether the capacity-adjusting switch is in a high-capacity gear.
Specifically, the master control terminal 21 detects the working state of the capacity-adjusting switch, and determines whether the capacity-adjusting switch is in a high-capacity gear, if so, the step S144 is entered, and if not, the step S145 is entered.
S144: the main control terminal 21 switches the capacity-adjusting switch to the capacity-adjusting flag bit and continues for a preset time.
Specifically, the main control terminal 21 switches the capacity-adjusting switch to a capacity-adjusting flag bit, and makes the capacity-adjusting switch be located in the capacity-adjusting flag bit for a preset time, so that the real-time running power is equal to the preset running power, and the main control terminal 21 switches the gear of the capacity-adjusting switch to a high-capacity gear.
Further, by dynamically adjusting the capacity of the power distribution system of the intelligent station, the running power of the power distribution system is maintained at the preset running power, so that the safety and reliability of the power distribution system of the intelligent station are improved.
S145: the main control terminal 21 switches the capacity-adjusting switch to a capacity-adjusting flag bit, and resets the capacity-adjusting flag bit of the capacity-adjusting switch according to the real-time running power of the intelligent transformer area.
Specifically, the main control terminal 21 switches the capacity-adjusting switch to a capacity-adjusting flag bit, maintains the working state of the capacity-adjusting switch, detects the working state of the intelligent platform in real time, and resets the capacity-adjusting switch flag bit according to the real-time working operation power change of the intelligent platform.
Specifically, according to the running power of wisdom district is right the distribution system of wisdom district carries out on-load capacity adjustment, can reduce the electric energy loss of distribution system in the wisdom district, improves the distribution quality of wisdom district.
Specifically, when the real-time operation power of the power distribution system of the intelligent station is equal to the preset operation power, the main control terminal 21 performs fine adjustment on the capacity-adjusting switch according to the variation trend of the real-time operation power of the power distribution system of the intelligent station, so that the real-time operation power of the power distribution system of the intelligent station can be maintained at the preset operation power, and when the real-time operation power of the power distribution system is kept equal to the preset operation power, the main control terminal 21 stops the adjustment on the capacity-adjusting switch and sets the gear of the current state of the capacity-adjusting switch as the capacity-adjusting flag bit.
Specifically, the invention provides a power distribution method of an intelligent transformer area, which combines the working load of a load end 3 and the operation data of a high-voltage receiving device 11 to carry out on-load voltage regulation on the power distribution work of the intelligent transformer area, and carries out on-load capacity regulation on the operation power of the intelligent transformer area after on-load voltage regulation, thereby improving the power distribution quality of the intelligent transformer area and reducing the power distribution loss of the intelligent transformer area.
Embodiment two:
fig. 5 shows a schematic diagram of a power distribution device for intelligent transformer areas in an embodiment of the present invention, where the power distribution device includes:
the data acquisition module 10: the main control terminal 21 obtains the power consumption voltage of the load end 3 of the intelligent substation and the distribution voltage of the high-voltage receiving device 11.
Specifically, the main control terminal 21 is disposed in the low voltage power distribution assembly 2, the high voltage receiving device 11 is connected with the load end 3 based on the low voltage power distribution assembly 2, the main control terminal 21 can receive working operation data of the high voltage receiving device 11, so as to obtain a power distribution voltage of the high voltage receiving device 11, the main control terminal 21 is electrically connected with the load end 3, and the main control terminal 21 can obtain load information of the load end 3, so as to obtain a power consumption voltage of the load end 3.
On-load voltage regulation module 20: and carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage.
Specifically, the main control terminal 21 obtains the working environment data of the high-voltage receiving device 11, and calculates the voltage limit value of the high-voltage receiving device 11 in combination with the distribution voltage, and the main control terminal 21 detects the working state of the high-voltage receiving device 11 in real time through detection devices such as a temperature sensor and an oil level gauge, and calculates the voltage limit value of the high-voltage receiving device 11 according to the working environment data of the high-voltage receiving device 11 detected in real time.
Further, the main control terminal 21 performs on-load voltage regulation according to the voltage limit value in combination with the distribution voltage and the power consumption voltage of the intelligent transformer area.
Analysis comparison module 30: and acquiring real-time power after voltage regulation of the intelligent station area, and comparing the real-time power with preset operation power to obtain comparison data.
Specifically, after the intelligent transformer area completes voltage regulation and adjustment, the main control terminal 21 detects the real-time power of the intelligent transformer area, analyzes the real-time power of the intelligent transformer area, obtains real-time load data of the integrated intelligent transformer 1 in the intelligent transformer area distribution system, obtains an optimal capacitance threshold of the capacitor in the integrated intelligent transformer 1 through analyzing the preset operation power of the intelligent transformer area, compares and analyzes the real-time load data with the optimal capacitance threshold, and then judges whether the intelligent transformer area performs on-load capacity regulation operation.
Further, performing a difference calculation on the real-time load data and the optimal capacitance threshold, comparing a calculation result with a preset threshold variation amplitude, and if the calculation result of the difference calculation is greater than the threshold variation amplitude, performing on-load capacity adjustment operation on the intelligent platform area by the main control terminal 21.
On-load capacity adjustment module 40: and carrying out on-load capacity adjustment of the intelligent platform by combining the comparison data and the working state of the capacity adjustment switch.
Specifically, the main control terminal 21 obtains a gear state of the capacity-adjusting switch, and performs gear switching on the capacity-adjusting switch according to the comparison data. The main control terminal 21 generates a capacity adjustment scheme of the intelligent platform region according to the comparison data, the main control terminal can predict the working state of the intelligent platform region according to the load change of the load end 3 so as to obtain the working prediction load of the intelligent platform region, and the main control terminal 21 can adjust the capacity adjustment scheme according to the prediction load in combination with the actual load and the optimal capacitance threshold.
The embodiment of the invention provides a power distribution device for an intelligent transformer area, which is characterized in that the power distribution method is used for carrying out on-load voltage regulation on the power distribution work of the intelligent transformer area by combining the working load of a load end 3 and the operation data of a high-voltage receiving device 11, and carrying out on-load capacity regulation on the operation power of the intelligent transformer area after on-load voltage regulation, so that the power distribution quality of the intelligent transformer area is improved, and the power distribution loss of the intelligent transformer area is reduced.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program to instruct related hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.
In addition, the foregoing details of the power distribution method and apparatus for an intelligent substation provided by the embodiments of the present invention are presented in the following description, and specific examples should be adopted to illustrate the principles and embodiments of the present invention, where the foregoing description of the embodiments is only for helping to understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (5)
1. The power distribution method of the intelligent transformer area is characterized in that the power distribution method is applied to a power distribution system, the power distribution system comprises a main control terminal, an integrated intelligent transformer, a high-voltage receiving device, a low-voltage power distribution assembly and a load end, the high-voltage receiving device is arranged in the integrated intelligent transformer, and the main control terminal is arranged in the low-voltage power distribution assembly;
the main control terminal is electrically connected with the load end and is used for acquiring load information of the load end;
the main control terminal is electrically connected with the high-voltage receiving device and is used for receiving the current and voltage values flowing through the high-voltage receiving device and monitoring the running state of the high-voltage receiving device;
the main control terminal is electrically connected with the load end and is used for acquiring load data of the load end and carrying out intelligent area distribution adjustment according to the load data of the load end;
an on-load voltage regulating switch is arranged in the integrated intelligent transformer, and the on-load voltage regulating switch is a multi-gear switch and is used for realizing multi-stage regulation of distribution voltage of a distribution system;
the power distribution method of the intelligent transformer area comprises the following steps:
the main control terminal obtains the power utilization voltage of the load end of the intelligent transformer area and the power distribution voltage of the high-voltage receiving device;
carrying out on-load voltage regulation according to the power utilization voltage and the distribution voltage;
the main control terminal obtains the power load of a load end, and combines the power voltage to carry out analog adjustment on the distribution voltage to obtain an analog adjustment voltage value;
calculating the analog voltage offset rate after analog voltage regulation according to the analog regulation voltage value, and checking by combining the rated voltage offset rate of the high-voltage receiving device;
the control terminal acquires working environment data of the high-voltage receiving device and calculates a voltage limit value of the high-voltage receiving device by combining the distribution voltage;
selecting different voltage regulating amplitudes within the voltage limit range to obtain a plurality of groups of analog regulating voltage values;
calculating the analog voltage offset rate of each group of analog adjustment voltage, calculating the difference value between each group of analog voltage offset rate and the rated voltage offset rate, comparing calculation results, and selecting data with the smallest difference value result for voltage adjustment;
acquiring real-time power after voltage regulation of an intelligent platform region, and comparing the real-time power with preset operation power to obtain comparison data;
carrying out on-load capacity adjustment of the intelligent platform area by combining the comparison data and the working state of the capacity adjustment switch;
the on-load capacity adjustment method comprises the following steps:
s141: the main control terminal acquires the real-time operation power of the intelligent platform region and judges whether the real-time operation power is larger than a preset operation power or not;
s142: when the real-time running power is larger than the preset running power, the main control terminal detects whether the capacity-adjusting switch is in a low-capacity gear, if so, the step S144 is entered, and if not, the step S145 is entered;
s143: when the real-time running power is smaller than the preset running power, the main control terminal detects whether the capacity-adjusting switch is in a high-capacity gear, if so, the step S144 is entered, and if not, the step S145 is entered;
s144: the main control terminal switches the capacity-regulating switch to a capacity-regulating zone bit and lasts for a preset time;
s145: and the main control terminal switches the capacity-regulating switch to a capacity-regulating zone bit, and resets the capacity-regulating zone bit of the capacity-regulating switch according to the real-time running power of the intelligent station area.
2. The intelligent block distribution method of claim 1, wherein the distribution method further comprises:
and the main control terminal acquires the power distribution running state of the intelligent transformer area and performs reactive power compensation according to the power distribution running state.
3. The intelligent-zone power distribution method according to claim 2, wherein the main control terminal obtains a power distribution operation state of the intelligent zone, and performing reactive power compensation according to the power distribution operation state comprises:
the main control terminal acquires inductive reactive power and capacitive reactive power of the intelligent transformer area distribution operation;
and calculating the total reactive power of the intelligent transformer area by combining the inductive reactive power and the capacitive reactive power.
4. The intelligent block distribution method according to claim 1, wherein the on-load voltage regulation according to the power consumption voltage and the distribution voltage further comprises:
and the main control terminal acquires the electricity load of the load end and judges whether the electricity voltage meets the electricity requirement of the load end according to the electricity load.
5. A distribution device for intelligent bays, characterized in that it is adapted to perform the distribution method for intelligent bays according to any one of claims 1 to 4.
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| US11906601B2 (en) * | 2018-10-12 | 2024-02-20 | Iscientific Techsolutions Labs | Intelligent transformer monitoring system |
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| CN201242932Y (en) * | 2008-06-25 | 2009-05-20 | 中国电力科学研究院 | On-load capacitance-regulating synthesis controller capable of monitoring power distribution |
| CN103474985A (en) * | 2013-06-27 | 2013-12-25 | 国家电网公司 | Realization method for function of adaptive load type distribution transformer |
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