CN117013598B - Outlet voltage constant voltage control method, system, storage medium and intelligent terminal - Google Patents
Outlet voltage constant voltage control method, system, storage medium and intelligent terminal Download PDFInfo
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- CN117013598B CN117013598B CN202310842004.3A CN202310842004A CN117013598B CN 117013598 B CN117013598 B CN 117013598B CN 202310842004 A CN202310842004 A CN 202310842004A CN 117013598 B CN117013598 B CN 117013598B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 238000010248 power generation Methods 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims description 73
- 230000008859 change Effects 0.000 claims description 71
- 230000001276 controlling effect Effects 0.000 claims description 41
- 230000005284 excitation Effects 0.000 claims description 37
- 238000013459 approach Methods 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 6
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- 238000004364 calculation method Methods 0.000 description 5
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
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- Control Of Eletrric Generators (AREA)
Abstract
The application relates to a constant voltage control method, a constant voltage control system, a storage medium and an intelligent terminal for outlet voltage, which relate to the field of generator power generation systems and comprise the steps of obtaining external network voltage; calculating conversion ratio according to the external network voltage and preset outlet voltage; the application can always stabilize the internal network voltage near the outlet voltage by determining the conversion ratio of the internal network and the external network, thereby preventing the electrical equipment from being burnt out due to unstable outlet voltage and improving the service life and safety of the electrical equipment.
Description
Technical Field
The application relates to the field of generator power generation systems, in particular to an outlet voltage constant voltage control method, an outlet voltage constant voltage control system, a storage medium and an intelligent terminal.
Background
Under the increasingly severe situation, garbage incineration power generation is the best mode for disposing household garbage in a 'reduced, harmless and recycling' way, and is attracting great attention and attention of the state.
With the improvement of the living standard of people, more and more household garbage is generated, and garbage power generation is generated. The garbage power generation can change waste into valuable, not only fully utilizes the heat value of garbage, but also can uniformly treat harmful components generated by combustion through the flue gas treatment system, and reduces the pollution to the environment.
The prior art has the following problems that the unit capacity of a power plant is relatively smaller for an external network, the grid-connected line and the voltages of various levels in the power plant are controlled by the external network, and the voltage of the external network at the grid-connected side of the line fluctuates, so that the fluctuation of the outlet voltage of a generator is influenced, the normal use of electrical equipment in the power plant can be influenced due to the fact that the outlet voltage of the generator is too high or too low, the electrical equipment can be seriously burnt, the fire disaster and other safety hidden problems are caused, and the improvement room is left.
Disclosure of Invention
In order to solve the problem that the normal use of electrical equipment in a factory can be influenced by the fact that the excessive high or low outlet voltage of a generator can seriously cause the burning of the electrical equipment, the application provides an outlet voltage constant-voltage control method, an outlet voltage constant-voltage control system, a storage medium and an intelligent terminal.
In a first aspect, the present application provides a method for controlling constant voltage of an outlet voltage, which adopts the following technical scheme:
An outlet voltage constant voltage control method, comprising:
acquiring an external network voltage;
Calculating conversion ratio according to the external network voltage and preset outlet voltage;
and selecting a corresponding magnetic resistance gear to adjust based on the conversion ratio.
Through adopting above-mentioned technical scheme, thereby confirm the conversion proportion of interior outer network through automatic identification outer network voltage to adjust the magnetic resistance gear and make the intranet voltage stabilize near the exit voltage all the time when guaranteeing outer network voltage variation under conversion proportion, make exit voltage relatively stable, prevent because exit voltage is unstable and lead to electrical equipment's burn, improved electrical equipment's life and security.
Optionally, the method for selecting the corresponding magnetic resistance gear to adjust based on the conversion ratio includes:
Judging whether the conversion ratio is 0;
If not, selecting a corresponding magnetic resistance gear to adjust based on the conversion proportion;
If yes, obtaining the internal network consumption voltage;
calculating redundant voltage based on the internal network consumption voltage, the outlet voltage and the preset energy storage voltage;
searching for a magnetic flux variation value based on the redundant voltage and the outlet voltage;
the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator.
Through adopting above-mentioned technical scheme, when only having the intranet, thereby reduce motor exit voltage through increase and decrease magnetic flux for the electric energy of output just can supply inside electric wire netting to consume, avoids because the electric energy piles up the condition of increasing exit voltage, makes exit voltage stable and improves electrical equipment's life equally.
Optionally, the method for controlling the exciting screen to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator comprises the following steps:
comparing the redundant voltage with the corresponding outlet voltages of a plurality of groups of units to determine a unit with the outlet voltage smaller than the redundant voltage, and defining the unit as a small unit;
When the small unit is not present, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
when the small units exist, the outlet voltages of any number of small units are arbitrarily selected to be combined so as to obtain the voltage sum of the small units;
Comparing the excess voltage with a small unit voltage sum to determine a near unit voltage sum, the near unit voltage sum being equal to or less than the excess voltage, and when less, the near unit voltage sum being closest to the excess voltage;
calculating according to the voltage close to the unit and the redundant voltage to obtain actual redundant voltage;
searching for an actual magnetic quantity change value based on the actual redundant voltage, the outlet voltage and the approach unit voltage;
Closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
Through adopting above-mentioned technical scheme, thereby through closing the function that realizes the step-down with corresponding unit, thereby the electric energy just satisfies the use of intranet through the generation of reducing the electric energy of same play, reduced the use duration of unit again under the circumstances of guaranteeing the step-down, improved the life of unit.
Optionally, the method for closing the unit voltage approaching to and corresponding to the small unit when the small unit exists and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator comprises the following steps:
Acquiring the current time;
Determining the expected external network voltage disconnection time length falling in based on the current time and the preset historical external network voltage disconnection time distribution condition;
When the predicted external network voltage disconnection time is smaller than the preset waste time or does not exist, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
When the predicted disconnection time of the external network voltage is longer than the waste time, closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
By adopting the technical scheme, the generator set is not burnt due to the fact that the voltage of the generator set suddenly rises or falls for a short time, the disconnection time of this time is determined by determining the disconnection time of the external network in the corresponding time, so that the frequent start-stop of the generator set is reduced in the time when the voltage rises or falls but the generator set is not required to be closed, and the service life of the generator set is prolonged.
Optionally, the method for controlling the excitation screen to increase or decrease according to the magnetic quantity change value to control the outlet voltage of the generator when the small-amount unit does not exist comprises the following steps:
Acquiring a generating set which is generating electricity and a standby set which is not generating electricity;
arbitrarily selecting a generator set and a standby set, calculating the difference between the outlet voltage corresponding to the generator set and the outlet voltage corresponding to the standby set, and defining the difference as an adjustment voltage;
When no regulating voltage smaller than the redundant voltage exists, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
Defining a corresponding generator set as an adjusting generator set when an adjusting voltage smaller than the redundant voltage exists, and defining a corresponding standby set as an adjusting standby set;
Any number of regulated voltages are arbitrarily selected to be combined to obtain a regulated voltage sum;
Comparing the excess voltage with the regulated voltage sum to determine a near regulated voltage sum, the near regulated voltage sum being equal to or less than the excess voltage, the near regulated voltage sum being closest to the excess voltage when less than;
Calculating according to the approach regulation voltage and the redundant voltage to obtain an actual regulation redundant voltage;
based on the actual regulated redundant voltage, the outlet voltage and the near regulated voltage and searching for an actual regulated magnetic quantity variation value;
Closing the proximity regulating voltage and the corresponding generator set, opening the proximity regulating voltage and the corresponding standby unit, and controlling the excitation screen to increase or decrease according to the actual regulating magnetic quantity change value so as to control the outlet voltage of the generator.
By adopting the technical scheme, the working state is switched between the generating set and the generating set, so that the requirement of voltage change is met, and the flexibility and the intellectualization of the voltage change are improved.
Optionally, the method for closing the proximity adjustment voltage and the corresponding generator set, opening the proximity adjustment voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual adjustment magnetic quantity change value so as to control the outlet voltage of the generator includes:
Analyzing a preset historical intranet consumption voltage change curve according to the predicted extranet voltage disconnection time length to obtain a predicted voltage floating value and predicted voltage floating precision;
Searching from a preset database based on a randomly selected unit to obtain voltage floating precision corresponding to the unit, and defining the voltage floating precision as unit voltage floating precision;
Analyzing the corresponding outlet voltage and the unit voltage floating precision of the unit based on the predicted voltage floating value and the predicted voltage floating precision to determine the unit with the outlet voltage closest to the predicted voltage floating value and the unit voltage floating precision closest to the predicted voltage floating precision, and defining the unit as an alternative unit;
judging whether the alternative unit is a generator unit or not;
If the power generation unit is the power generation unit, judging whether the alternative unit is a power generation unit which is close to the regulating voltage and corresponds to the regulating voltage;
if the adjustment voltage sum is close to the corresponding generator set, deleting the adjustment voltage sum existing in the alternative set, and recalculating the close adjustment voltage sum;
If the voltage is not close to the regulating voltage and the corresponding generator set, closing the voltage close to the regulating voltage and the corresponding generator set, opening the voltage close to the regulating voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual regulating magnetic quantity change value so as to control the outlet voltage of the standby set;
If the power generation unit is not the power generation unit, judging whether the alternative unit is a standby unit which is close to the regulating voltage and corresponds to the regulating voltage;
If the excitation screen approaches the adjusting voltage and the corresponding standby unit, closing the approaching adjusting voltage and the corresponding generator unit, opening the approaching adjusting voltage and the corresponding standby unit, and controlling the excitation screen to increase or decrease according to the actual adjusting magnetic quantity change value so as to control the outlet voltage of the standby unit;
If the adjustment voltage is not close to the corresponding standby unit, the standby unit in the adjustment voltage is set as an alternative unit, and then one generator unit and the alternative unit are selected at will to calculate the adjustment voltage so as to recalculate the close adjustment voltage sum.
Through adopting above-mentioned technical scheme, through screening out the voltage change precision assorted unit that this time quantum corresponds in magnetic flux floating precision and the history to regard as generating set to when generating set needs to adjust magnetic flux and control voltage change, voltage change can satisfy actual voltage change's demand, has improved voltage change's flexibility and accuracy.
Optionally, the method for analyzing the outlet voltage and the unit voltage floating precision corresponding to the unit based on the predicted voltage floating value and the predicted voltage floating precision to determine the alternative unit comprises the following steps:
any number of units are arbitrarily selected to calculate the corresponding sum of the outlet voltages, and the sum is defined as the unit voltage sum;
Comparing the outlet voltage, the unit voltage sum with the predicted voltage floating value to determine a unit voltage sum or an outlet voltage with a difference less than a preset voltage tolerance value, defining the matched unit voltage sum as being close to the predicted unit voltage sum, and defining the matched outlet voltage as being close to the predicted outlet voltage;
Calculating controllable voltage floating precision according to the approaching predicted unit voltage and the unit voltage floating precision corresponding to the corresponding unit;
the controllable voltage floating precision and the unit voltage floating precision corresponding to the unit approaching the predicted outlet voltage are respectively compared with the predicted voltage floating precision to determine the controllable voltage floating precision closest to the predicted voltage floating precision or the unit voltage floating precision approaching the unit voltage floating precision, and the controllable voltage floating precision is defined as the approaching controllable voltage floating precision;
judging whether the voltage floating precision of the approaching unit is closer to the predicted voltage floating precision than the voltage floating precision of the approaching unit;
if yes, defining a unit corresponding to the voltage floating precision of the approaching unit as an alternative unit;
if not, all the units corresponding to the near controllable voltage floating precision are defined as alternative units.
Through adopting above-mentioned technical scheme, when the precision of single unit can't satisfy voltage variation's demand, then can adjust the precision through the unit cooperation of a plurality of voltage variation range demands of satisfying to make the precision satisfy the demand of outer network voltage variation precision as far as possible, improved voltage variation.
In a second aspect, the present application provides an outlet voltage constant voltage control system, which adopts the following technical scheme:
An outlet voltage constant voltage control system comprising:
the acquisition module is used for acquiring the external network voltage, the internal network consumption voltage, the current time, the generator set and the standby set;
A memory for storing a program of any one of the above-described outlet voltage constant voltage control methods;
And the processor, the program in the memory can be loaded and executed by the processor and realize any one of the outlet voltage constant voltage control methods.
Through adopting above-mentioned technical scheme, thereby confirm the conversion proportion of interior outer network through automatic identification outer network voltage to adjust the magnetic resistance gear and make the intranet voltage stabilize near the exit voltage all the time when guaranteeing outer network voltage variation under conversion proportion, make exit voltage relatively stable, prevent because exit voltage is unstable and lead to electrical equipment's burn, improved electrical equipment's life and security.
In a third aspect, the present application provides an intelligent terminal, which adopts the following technical scheme:
the intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute any one of the outlet voltage constant voltage control methods.
Through adopting above-mentioned technical scheme, thereby confirm the conversion proportion of interior outer network through automatic identification outer network voltage to adjust the magnetic resistance gear and make the intranet voltage stabilize near the exit voltage all the time when guaranteeing outer network voltage variation under conversion proportion, make exit voltage relatively stable, prevent because exit voltage is unstable and lead to electrical equipment's burn, improved electrical equipment's life and security.
In a fourth aspect, the present application provides a computer storage medium capable of storing a corresponding program, and having the characteristics of accurate analysis and fast switching.
A computer readable storage medium, adopting the following technical scheme:
A computer-readable storage medium storing a computer program capable of being loaded by a processor and executing any one of the above-described outlet voltage constant voltage control methods.
Through adopting above-mentioned technical scheme, thereby confirm the conversion proportion of interior outer network through automatic identification outer network voltage to adjust the magnetic resistance gear and make the intranet voltage stabilize near the exit voltage all the time when guaranteeing outer network voltage variation under conversion proportion, make exit voltage relatively stable, prevent because exit voltage is unstable and lead to electrical equipment's burn, improved electrical equipment's life and security.
In summary, the application has at least the following beneficial technical effects:
1. By determining the conversion ratio of the inner network and the outer network, the voltage of the inner network is always stabilized near the outlet voltage, so that the electrical equipment is prevented from being burnt out due to unstable outlet voltage, and the service life and the safety of the electrical equipment are improved;
2. the corresponding unit is closed to realize the function of reducing the pressure, so that the service life of the unit is shortened under the condition of ensuring the pressure reduction, and the service life of the unit is prolonged;
3. The generator set with the matched magnetic flux floating precision and the voltage change precision corresponding to the time period in the history is selected to be used as the generator set, so that the voltage change can meet the requirement of actual voltage change, and the flexibility and the accuracy of the voltage change are improved.
Drawings
Fig. 1 is a flowchart of a method for controlling an outlet voltage constant voltage in an embodiment of the present application.
FIG. 2 is a flow chart of a method for selecting a corresponding magnetoresistive gear for adjustment based on a shift ratio in an embodiment of the application.
FIG. 3 is a flow chart of a method for controlling the excitation screen to increase or decrease according to the magnetic flux variation value to control the generator outlet voltage in an embodiment of the application.
FIG. 4 is a flow chart of a method for controlling the generator outlet voltage by switching off the near unit voltage and the corresponding unit when the small unit exists and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value in an embodiment of the application.
FIG. 5 is a flow chart of a method for controlling the excitation screen to increase or decrease according to the magnetic flux variation value to control the generator outlet voltage when the micro-machine set is not present in an embodiment of the application.
FIG. 6 is a flowchart of a method for controlling the generator outlet voltage by switching off the proximity adjustment voltage and the corresponding generator set, switching on the proximity adjustment voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual adjustment magnetic quantity variation value in an embodiment of the present application.
FIG. 7 is a flow chart of a method of analyzing the corresponding outlet voltage of a crew and the crew voltage float accuracy to determine an alternative crew based on the predicted voltage float value and the predicted voltage float accuracy in an embodiment of the application.
Fig. 8 is a system block diagram of an outlet voltage constant voltage control method in an embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings 1 to 8 and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The embodiment of the application discloses an outlet voltage constant-voltage control method. Referring to fig. 1, an outlet voltage constant voltage control method includes:
step 100: and obtaining the external network voltage.
The external network voltage is the actual voltage of the external network, and the acquisition mode can be acquired through a voltage transformer.
Step 101: and calculating the conversion ratio according to the external network voltage and the preset outlet voltage.
The outlet voltage is the voltage output by the power plant after grid connection, for example: 10.5kV. The conversion ratio is the ratio between the external network voltage and the outlet voltage. The manner of calculation is the external network voltage divided by the outlet voltage.
Step 102: and selecting a corresponding magnetic resistance gear to adjust based on the conversion ratio.
The reluctance gear is a gear of a magnetic induction coil like a transformer. The number of turns of the magnetic induction coil is fixed, so that the magnetic induction coil cannot be adjusted to finer precision and can be adjusted only in a gear mode. When the conversion ratio is not the conversion ratio corresponding to the magnetic resistance gear, the magnetic resistance gear close to the conversion ratio can be searched for as the conversion gear to be adjusted, so that the converted voltage is stabilized near the outlet voltage.
For example: the original outlet voltage is 10.5kV, the external network voltage is 35kV, the gear position of 35/10.5 is selected at the moment, then when the external network voltage is changed to 37.5kV, the conversion ratio is 37.5/10.5, and when the external network voltage is 38, the gear position of 37.5/10.5 is also selected.
Referring to fig. 2, the method of selecting a corresponding magnetoresistive gear for adjustment based on a conversion ratio includes:
step 200: judging whether the conversion ratio is 0.
The purpose of the judgment is to determine whether the external network is disconnected from the internal network of the power plant, and the internal network of the power plant is allowed to be in the isolated network.
Step 2001: if not, selecting the corresponding magnetic resistance gear to adjust based on the conversion ratio.
If not, then the extranet is illustrated as still connected, steps 100-101 may be employed.
Step 2002: if yes, the intranet consumption voltage is obtained.
The internal network consumption voltage is a voltage required for an electric appliance or the like consumed in a factory.
Step 201: and calculating redundant voltage based on the internal network consumption voltage, the outlet voltage and the preset energy storage voltage.
The energy storage voltage is the voltage required by the energy storage device when electric energy is stored. The redundant voltage is the voltage which is redundant after the internal network consumption voltage and the energy storage equipment are removed by the outlet voltage.
Step 202: the magnetic quantity change value is found based on the excess voltage and the exit voltage.
The magnetic quantity change value is a change amount of the magnetic field that effects a reduction of the exit voltage to the residual voltage. The searching mode can be a database searching mode, the mapping relation of the redundant voltage, the outlet voltage and the magnetic quantity change value is stored in the database, and the mapping relation is obtained by combining the experience of the staff with the actual test.
Step 203: the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator.
The excitation screen is controlled to increase or decrease according to the magnetic quantity change value, so that the output voltage of the generator is reduced, and the whole working voltage meets the internal consumption condition.
Referring to fig. 3, the method for controlling the excitation screen to increase or decrease according to the magnetic quantity variation value to control the outlet voltage of the generator includes:
Step 300: and comparing the redundant voltage with the corresponding outlet voltages of the multiple groups of units to determine a unit with the outlet voltage smaller than the redundant voltage, and defining the unit as a small unit.
Here, the generator set of the power plant is not only one, but also the voltage at the machine end generated by the generator set is easily different due to different environments and different types of equipment.
Step 301: and when the small unit is not present, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator.
Step 302: and when the small units exist, the outlet voltages of any number of small units are arbitrarily selected to be combined so as to obtain the voltage sum of the small units.
The sum of the voltage of the micro-machine sets is the sum of the outlet voltages of any number of micro-machine sets. The calculation is performed by adding any number of outlet voltages. When the small unit exists, the operation of closing the unit can be adopted to realize the function of reducing the voltage. Where the small aggregate voltage and the outlet voltage comprising the individual aggregate.
Step 303: a near-crew voltage sum is determined from the excess voltage and the small-crew voltage sum, the near-crew voltage sum being equal to or less than the excess voltage, and when less than the near-crew voltage sum is closest to the excess voltage.
The determination mode can be that the difference value of the excess voltage and the sum of the voltages of the small units is positive value, and the minimum value is close to the sum of the voltages of the units.
Step 304: and calculating according to the approach unit voltage and the redundant voltage to obtain the actual redundant voltage.
The actual redundant voltage is the voltage which is more than the voltage of the adjacent unit and the corresponding unit when the unit is closed. The calculation is performed by subtracting the sum of the voltages of the near-unit from the excess voltage.
Step 305: based on the actual excess voltage, the exit voltage and the approach unit voltage and the actual magnetic quantity variation value is found.
The actual magnetic quantity variation value is a variation of the magnetic field that effects the reduction of the exit voltage to the actual excess voltage. The searching mode is to subtract the voltage close to the unit voltage from the outlet voltage, and then use the difference value as the outlet voltage to match with the actual redundant voltage for searching.
Step 306: closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
Thereby reach the effect that reduces the exit voltage through closing the unit, guarantee on the one hand to reduce voltage, on the other hand for unit operating time reduces, has improved the life of unit.
Referring to fig. 4, the method for closing the approach unit voltage and the corresponding unit when the small unit exists and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator comprises the following steps:
Step 400: the current time is obtained.
The current time is the time when the external network is disconnected.
Step 401: and determining the falling predicted external network voltage disconnection time based on the current time and the preset historical external network voltage disconnection time distribution condition.
The historical external network voltage disconnection time distribution condition is the condition of the distribution of the external network disconnection time in the historical process before the current time, and can be the external network disconnection time within one day, including the starting point and the end point of disconnection, and further including the disconnection range and the disconnection duration. The expected external network voltage disconnection duration is the duration corresponding to the external network voltage disconnection range in which the current time falls, and also includes information of other time nodes, for example: a disconnection start point and a disconnection end point. The time node of the disconnection of the external network voltage at the current time can be seen through the historical disconnection time distribution condition of the external network voltage, and then the time of the residual disconnection is calculated according to the end point of the disconnection and the current time.
Step 402: when the predicted disconnection time of the external network voltage is smaller than the preset waste time or does not exist, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator.
The time consuming process of switching off the motor during this time and then switching on again causes a number of drawbacks, such as: the service life is reduced, the voltage is frequently switched and unstable, and the like, and the result caused by the defect is larger than the result caused by the voltage rise under the time. If the voltage is smaller than the preset value, the switching-off is not cost-effective, and the exciting screen can be directly controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator.
Step 403: when the predicted disconnection time of the external network voltage is longer than the waste time, closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
When greater, the disconnection is more cost effective, and the unit can be shut down to increase the service life of the unit.
Referring to fig. 5, a method for controlling an excitation screen to increase or decrease according to a variation value of a magnetic flux to control an outlet voltage of a generator when a small-sized unit is not present includes:
step 500: and acquiring a generating set which is generating electricity and a standby set which is not generating electricity.
The generator set is a generating set. The standby unit is a unit which does not generate electricity.
Step 501: and arbitrarily selecting the generator set and the standby set, calculating the difference between the outlet voltage corresponding to the generator set and the outlet voltage corresponding to the standby set, and defining the difference as the regulating voltage.
The regulated voltage may be positive or negative, indicating a voltage change. Here, the sum of the differences between any number of generator sets and any number of standby sets may be used.
Step 502: and when no regulating voltage smaller than the redundant voltage exists, the control excitation screen is increased or decreased according to the magnetic quantity change value so as to control the outlet voltage of the generator.
When the magnetic flux is not present, the power generation is performed according to the standby machine set, the standby adjustment of the power generation machine set cannot reduce the output voltage, and the change of the voltage can only be controlled according to the increase and decrease of the magnetic flux.
Step 503: and defining a corresponding generator set as an adjusting generator set when the adjusting voltage smaller than the redundant voltage exists, and defining a corresponding standby set as an adjusting standby set.
The number of the adjusting generator sets and the adjusting standby sets can be any number.
Step 504: any number of regulated voltages are arbitrarily selected to be combined to obtain a regulated voltage sum.
The regulated voltage and the combination of any number of regulated voltages.
Step 505: a near regulated voltage sum is determined based on the excess voltage and the regulated voltage sum, the near regulated voltage sum being equal to or less than the excess voltage, and the near regulated voltage sum being closest to the excess voltage when less than.
The determination may be such that the difference between the excess voltage and the near regulated voltage sum is positive and the smallest value is the near regulated voltage sum.
Step 506: and calculating according to the near regulation voltage and the redundant voltage to obtain the actual regulation redundant voltage.
The actual adjustment redundant voltage is the voltage which is more than the adjustment voltage and the corresponding working states of the generator set and the standby set after being switched. The calculation is performed by subtracting the sum of the approach adjustment voltages from the excess voltage.
Step 507: based on the actual regulated excess voltage, the outlet voltage and the near regulated voltage and the actual regulated magnetic quantity variation value is found.
The actual adjustment magnetic quantity change value is the change quantity of the magnetic field which realizes the effect of reducing the outlet voltage to the actual adjustment redundant voltage. The searching mode is to subtract the outlet voltage by the close regulating voltage, and then use the difference value as the outlet voltage to search in cooperation with the actual regulating redundant voltage.
Step 508: closing the proximity regulating voltage and the corresponding generator set, opening the proximity regulating voltage and the corresponding standby unit, and controlling the excitation screen to increase or decrease according to the actual regulating magnetic quantity change value so as to control the outlet voltage of the generator.
Although no separate unit may be used to implement the functions of the micro-machine unit, the voltage change flexibility is improved by switching the states of the generator unit and the standby unit.
Referring to fig. 6, the method for controlling the generator outlet voltage by switching off the proximity adjustment voltage and the corresponding generator set, switching on the proximity adjustment voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual adjustment magnetic quantity variation value includes:
Step 600: and analyzing a preset historical intranet consumption voltage change curve according to the predicted extranet voltage disconnection time to obtain a predicted voltage floating value and predicted voltage floating precision.
The predicted voltage floating value is a floating value of the internal network consumption voltage change in a time range corresponding to the predicted disconnection time of the external network voltage in the history process. The calculation mode is to predict the maximum value minus the minimum value of the voltage on the curve corresponding to the disconnection time of the external network voltage. The predicted voltage floating precision is the precision corresponding to the amplitude of each change of the voltage in the time range corresponding to the corresponding predicted disconnection time of the external network voltage. The analysis method is that the difference between the values of each voltage change is taken, and then the bit number corresponding to the minimum value of the difference is taken, for example: 0.01kV.
Step 601: searching from a preset database based on any selected unit to obtain voltage floating precision corresponding to the unit, and defining the voltage floating precision as unit voltage floating precision.
The unit is any selected unit, including a generator unit and a standby unit. The database contains the mapping relation between the machine set and the voltage floating precision. The voltage change value caused by the minimum amplitude in each magnetic increasing and decreasing process is determined by the staff in the field through the specification and the practical situation after purchasing.
Step 602: the corresponding outlet voltage and the unit voltage floating accuracy of the unit are analyzed based on the predicted voltage floating value and the predicted voltage floating accuracy to determine the unit whose outlet voltage is closest to the predicted voltage floating value and whose unit voltage floating accuracy is closest to the predicted voltage floating accuracy, and the unit is defined as an alternative unit.
Step 603: and judging whether the alternative unit is a generator unit or not.
The purpose of the determination is to determine whether it is a generating unit.
Step 6031: if the power generation unit is the power generation unit, judging whether the alternative power generation unit is the power generation unit which is close to the regulating voltage and corresponds to the regulating voltage.
The judgment here is that the generator set is converted into a standby state in the current conversion process.
Step 6032: if the power generation unit is not the power generation unit, judging whether the alternative unit is a standby unit which is close to the regulating voltage and corresponds to the regulating voltage.
If not, it is determined that the power generation unit is not generating power at the moment, and whether the power generation unit is converted into the power generation unit in the conversion process is needed.
Step 6041: and if the adjustment voltage sum is close to the corresponding generator set, deleting the adjustment voltage sum existing in the alternative set, and recalculating the close adjustment voltage sum.
If yes, the method shows that the power generation unit is the power generation unit at the moment, but the power generation unit is changed into the standby unit after the conversion, so that in order to keep the alternative unit in the power generation unit, the accuracy and the amplitude of voltage regulation are matched with those of actual voltage change, the conversion efficiency is improved, and the alternative unit is deleted from the power generation unit needing to calculate the regulated voltage, so that other units are replaced for conversion.
Step 6042: if the voltage is not close to the adjusting voltage and the corresponding generator set, closing the voltage close to the adjusting voltage and the corresponding generator set, opening the voltage close to the adjusting voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual adjusting magnetic quantity change value so as to control the outlet voltage of the standby set.
If not, the generator set is not converted, and power generation is continued, so that the output voltage can be controlled by changing the magnetic flux of the motor of the generator set.
Step 6051: if the excitation screen approaches the adjusting voltage and the corresponding standby machine set, closing the approaching adjusting voltage and the corresponding generator set, opening the approaching adjusting voltage and the corresponding standby machine set, and controlling the excitation screen to increase or decrease according to the actual adjusting magnetic quantity change value so as to control the outlet voltage of the standby machine set.
If the voltage is close to the regulating voltage and the corresponding standby machine set, the description shows that the voltage is the standby machine set at present, but the voltage is converted into the generator set in the subsequent process, and the effect that the precision and the amplitude of the voltage regulation are matched with the precision and the amplitude of the actual voltage change can be realized.
Step 6052: if the adjustment voltage is not close to the corresponding standby unit, the standby unit in the adjustment voltage is set as an alternative unit, and then one generator unit and the alternative unit are selected at will to calculate the adjustment voltage so as to recalculate the close adjustment voltage sum.
If neither the generator set nor the standby set which is converted into the generator set, it is stated that the standby set for the regulated voltage is to be set as the candidate set at this time, and then the regulated voltage between the candidate set is calculated, and the near regulated voltage sum is selected among these regulated voltages.
Referring to fig. 7, a method of analyzing the corresponding outlet voltage of a unit and the unit voltage floating accuracy based on the predicted voltage floating value and the predicted voltage floating accuracy to determine an alternative unit includes:
step 700: any number of units are arbitrarily selected to calculate the corresponding sum of the outlet voltages, and the sum is defined as the unit voltage sum.
Step 701: the outlet voltage, the stack voltage sum, and the predicted voltage float value are compared, respectively, to determine a stack voltage sum or an outlet voltage having a difference less than a preset voltage tolerance value, the stack voltage sum being defined as being near the predicted stack voltage sum, the stack voltage being defined as being near the predicted outlet voltage.
Step 702: and calculating the controllable voltage floating precision according to the approaching predicted unit voltage and the unit voltage floating precision corresponding to the corresponding unit.
The controllable voltage floating precision is the voltage floating precision formed by matching the expected unit voltage and the corresponding unit voltage floating precision of the corresponding unit, and comprises the sum of the floating precision and the difference of the floating precision, and can be any number of floating precision in the sum of any number of floating precision minus any number of floating precision in the rest.
Step 703: and respectively comparing the controllable voltage floating precision and the unit voltage floating precision corresponding to the unit approaching the predicted outlet voltage with the predicted voltage floating precision to determine the controllable voltage floating precision closest to the predicted voltage floating precision or the unit voltage floating precision approaching the unit voltage floating precision, and defining the controllable voltage floating precision as the approaching controllable voltage floating precision.
Step 704: and judging whether the voltage floating precision of the approaching machine set is closer to the predicted voltage floating precision than the voltage floating precision of the approaching controllable machine set.
The purpose of the determination is to determine which is the closest.
Step 7041: if yes, a unit corresponding to the voltage floating precision of the approaching unit is defined as an alternative unit.
If so, the floating precision of the single unit corresponding to the voltage floating precision of the approaching unit is indicated to be the closest, and the single unit is defined as an alternative unit.
Step 7042: if not, all the units corresponding to the near controllable voltage floating precision are defined as alternative units.
If not, the floating precision corresponding to all the units close to the controllable voltage floating precision is the closest after matching, all the corresponding units are defined as alternative units, and then each alternative unit can be executed in steps 600-6052, so that each alternative unit is a generator unit, and voltage control of the generator unit according to the floating precision close to the controllable voltage is realized.
Based on the same inventive concept, the embodiment of the invention provides an outlet voltage constant-voltage control system.
Referring to fig. 8, an outlet voltage constant voltage control system includes:
the acquisition module is used for acquiring the external network voltage, the internal network consumption voltage, the current time, the generator set and the standby set;
a memory for storing a program of an outlet voltage constant voltage control method;
And the processor, the program in the memory can be loaded and executed by the processor and realizes an outlet voltage constant voltage control method.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
Embodiments of the present invention provide a computer-readable storage medium storing a computer program capable of being loaded by a processor and executing a method of controlling an outlet voltage constant voltage.
The computer storage medium includes, for example: a usb disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Based on the same inventive concept, the embodiment of the invention provides an intelligent terminal, which comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and execute an outlet voltage constant voltage control method.
The foregoing description of the preferred embodiments of the application is not intended to limit the scope of the application, as any feature disclosed in this specification (including abstract and drawings), unless otherwise specifically stated, may be replaced by alternative features serving the same, equivalent or similar purpose. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (8)
1. The outlet voltage constant voltage control method is applied to an excitation system of a generator set and is characterized by comprising the following steps of:
acquiring an external network voltage;
Calculating conversion ratio according to the external network voltage and preset outlet voltage;
selecting a corresponding magnetic resistance gear to adjust based on the conversion proportion;
the method for adjusting the corresponding magnetic resistance gear based on the conversion ratio comprises the following steps:
Judging whether the conversion ratio is 0;
If not, selecting a corresponding magnetic resistance gear to adjust based on the conversion proportion;
If yes, obtaining the internal network consumption voltage;
calculating redundant voltage based on the internal network consumption voltage, the outlet voltage and the preset energy storage voltage;
searching for a magnetic flux variation value based on the redundant voltage and the outlet voltage;
The excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
the method for controlling the excitation screen to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator comprises the following steps:
comparing the redundant voltage with the corresponding outlet voltages of a plurality of groups of units to determine a unit with the outlet voltage smaller than the redundant voltage, and defining the unit as a small unit;
When the small unit is not present, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
when the small units exist, the outlet voltages of any number of small units are arbitrarily selected to be combined so as to obtain the voltage sum of the small units;
Comparing the excess voltage with a small unit voltage sum to determine a near unit voltage sum, the near unit voltage sum being equal to or less than the excess voltage, and when less, the near unit voltage sum being closest to the excess voltage;
calculating according to the voltage close to the unit and the redundant voltage to obtain actual redundant voltage;
searching for an actual magnetic quantity change value based on the actual redundant voltage, the outlet voltage and the approach unit voltage;
Closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
2. The method for controlling the outlet voltage constant voltage according to claim 1, wherein the method for closing the set voltage approaching and corresponding to the small set when the small set exists and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator comprises the following steps:
Acquiring the current time;
Determining the expected external network voltage disconnection time length falling in based on the current time and the preset historical external network voltage disconnection time distribution condition;
When the predicted external network voltage disconnection time is smaller than the preset waste time or does not exist, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
When the predicted disconnection time of the external network voltage is longer than the waste time, closing the voltage of the approaching machine set and the corresponding machine set, and controlling the exciting screen to increase or decrease according to the actual magnetic quantity change value so as to control the outlet voltage of the generator.
3. The method of claim 1, wherein the step of controlling the excitation screen to increase or decrease in accordance with the magnetic flux change value to control the generator outlet voltage when the small-sized wind turbine is not present comprises:
Acquiring a generating set which is generating electricity and a standby set which is not generating electricity;
arbitrarily selecting a generator set and a standby set, calculating the difference between the outlet voltage corresponding to the generator set and the outlet voltage corresponding to the standby set, and defining the difference as an adjustment voltage;
When no regulating voltage smaller than the redundant voltage exists, the excitation screen is controlled to increase or decrease according to the magnetic quantity change value so as to control the outlet voltage of the generator;
Defining a corresponding generator set as an adjusting generator set when an adjusting voltage smaller than the redundant voltage exists, and defining a corresponding standby set as an adjusting standby set;
Any number of regulated voltages are arbitrarily selected to be combined to obtain a regulated voltage sum;
Comparing the excess voltage with the regulated voltage sum to determine a near regulated voltage sum, the near regulated voltage sum being equal to or less than the excess voltage, the near regulated voltage sum being closest to the excess voltage when less than;
Calculating according to the approach regulation voltage and the redundant voltage to obtain an actual regulation redundant voltage;
based on the actual regulated redundant voltage, the outlet voltage and the near regulated voltage and searching for an actual regulated magnetic quantity variation value;
Closing the proximity regulating voltage and the corresponding generator set, opening the proximity regulating voltage and the corresponding standby unit, and controlling the excitation screen to increase or decrease according to the actual regulating magnetic quantity change value so as to control the outlet voltage of the generator.
4. The method for controlling the constant voltage of the outlet voltage according to claim 3, wherein the method for switching off the power generator set corresponding to the approach adjustment voltage and switching on the standby power generator set corresponding to the approach adjustment voltage and controlling the excitation screen to increase or decrease according to the actual change value of the adjustment magnetic quantity so as to control the outlet voltage of the power generator comprises the following steps:
Analyzing a preset historical intranet consumption voltage change curve according to the predicted extranet voltage disconnection time length to obtain a predicted voltage floating value and predicted voltage floating precision;
Searching from a preset database based on a randomly selected unit to obtain voltage floating precision corresponding to the unit, and defining the voltage floating precision as unit voltage floating precision;
Analyzing the corresponding outlet voltage and the unit voltage floating precision of the unit based on the predicted voltage floating value and the predicted voltage floating precision to determine the unit with the outlet voltage closest to the predicted voltage floating value and the unit voltage floating precision closest to the predicted voltage floating precision, and defining the unit as an alternative unit;
judging whether the alternative unit is a generator unit or not;
If the power generation unit is the power generation unit, judging whether the alternative unit is a power generation unit which is close to the regulating voltage and corresponds to the regulating voltage;
if the adjustment voltage sum is close to the corresponding generator set, deleting the adjustment voltage sum existing in the alternative set, and recalculating the close adjustment voltage sum;
If the voltage is not close to the regulating voltage and the corresponding generator set, closing the voltage close to the regulating voltage and the corresponding generator set, opening the voltage close to the regulating voltage and the corresponding standby set, and controlling the excitation screen to increase or decrease according to the actual regulating magnetic quantity change value so as to control the outlet voltage of the standby set;
If the power generation unit is not the power generation unit, judging whether the alternative unit is a standby unit which is close to the regulating voltage and corresponds to the regulating voltage;
If the excitation screen approaches the adjusting voltage and the corresponding standby unit, closing the approaching adjusting voltage and the corresponding generator unit, opening the approaching adjusting voltage and the corresponding standby unit, and controlling the excitation screen to increase or decrease according to the actual adjusting magnetic quantity change value so as to control the outlet voltage of the standby unit;
If the adjustment voltage is not close to the corresponding standby unit, the standby unit in the adjustment voltage is set as an alternative unit, and then one generator unit and the alternative unit are selected at will to calculate the adjustment voltage so as to recalculate the close adjustment voltage sum.
5. The method of claim 1, wherein analyzing the corresponding outlet voltage and the voltage floating accuracy of the unit based on the predicted voltage floating value and the predicted voltage floating accuracy to determine the candidate unit comprises:
any number of units are arbitrarily selected to calculate the corresponding sum of the outlet voltages, and the sum is defined as the unit voltage sum;
Comparing the outlet voltage, the unit voltage sum with the predicted voltage floating value to determine a unit voltage sum or an outlet voltage with a difference less than a preset voltage tolerance value, defining the matched unit voltage sum as being close to the predicted unit voltage sum, and defining the matched outlet voltage as being close to the predicted outlet voltage;
Calculating controllable voltage floating precision according to the approaching predicted unit voltage and the unit voltage floating precision corresponding to the corresponding unit;
the controllable voltage floating precision and the unit voltage floating precision corresponding to the unit approaching the predicted outlet voltage are respectively compared with the predicted voltage floating precision to determine the controllable voltage floating precision closest to the predicted voltage floating precision or the unit voltage floating precision approaching the unit voltage floating precision, and the controllable voltage floating precision is defined as the approaching controllable voltage floating precision;
judging whether the voltage floating precision of the approaching unit is closer to the predicted voltage floating precision than the voltage floating precision of the approaching unit;
if yes, defining a unit corresponding to the voltage floating precision of the approaching unit as an alternative unit;
if not, all the units corresponding to the near controllable voltage floating precision are defined as alternative units.
6. An outlet voltage constant voltage control system, comprising:
the acquisition module is used for acquiring the external network voltage, the internal network consumption voltage, the current time, the generator set and the standby set;
A memory for storing a program of an outlet voltage constant voltage control method according to any one of claims 1 to 5;
a processor, a program in a memory being loadable by the processor and implementing a method of controlling an outlet voltage constant voltage as claimed in any one of claims 1 to 5.
7. Intelligent terminal, characterized in that it comprises a memory and a processor, on which a computer program is stored which can be loaded by the processor and which performs a method for controlling the constant voltage of an outlet voltage according to any one of claims 1 to 5.
8. A computer-readable storage medium, characterized in that a computer program capable of being loaded by a processor and executing an outlet voltage constant voltage control method according to any one of claims 1 to 5 is stored.
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