CN114268108B - Start-stop control method and device for power related equipment - Google Patents

Start-stop control method and device for power related equipment Download PDF

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CN114268108B
CN114268108B CN202111591040.4A CN202111591040A CN114268108B CN 114268108 B CN114268108 B CN 114268108B CN 202111591040 A CN202111591040 A CN 202111591040A CN 114268108 B CN114268108 B CN 114268108B
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transformer
target
power
bank
loss rate
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CN114268108A (en
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黄楚伟
陈渲文
徐金猴
郑友和
周铭杰
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China Southern Power Grid Digital Platform Technology Guangdong Co ltd
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China Southern Power Grid Digital Platform Technology Guangdong Co ltd
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Abstract

The invention discloses a start-stop control method and a start-stop control device of power related equipment, comprising the following steps: basic data of each transformer in the transformer group are obtained; calculating the total load rate of each transformer according to the basic data; when any transformer with the total load rate smaller than or equal to a first preset warning value exists in the transformer group, determining a first target transformer which is currently in a working state and needs to be stopped, and outputting a stopping prompt aiming at the first target transformer; when the total load rate of the transformers in the transformer bank is larger than or equal to a second preset warning value, a second target transformer which is in an idle state and needs to be started is determined from the transformer bank, a starting prompt is output aiming at the second target transformer, and/or target electric equipment which needs to be adjusted is determined from all electric equipment which is currently supplied with power by the transformer bank, and an adjustment prompt aiming at the target electric equipment is output. Therefore, the implementation of the invention can rapidly and accurately determine the transformer or the electric equipment which needs to execute the optimization strategy.

Description

Start-stop control method and device for power related equipment
Technical Field
The invention relates to the technical field of intelligent control, in particular to a start-stop control method and device for power related equipment.
Background
In actual life, under the scene that needs the electricity, be provided with many electric power related equipment, like specific consumer and carry out the transformer etc. that supply power to the consumer, and need adjust the power supply condition to the consumer through opening of control transformer, also need adjust specific electricity condition through the switch of consumer.
Currently, the work control of a transformer or electric equipment is generally implemented according to human judgment, namely: it takes a certain amount of time and effort to determine which transformers or which consumers need to be started or stopped, which is inefficient and prone to error. It can be seen that how to quickly and accurately control the start-stop of the power related equipment is important.
Disclosure of Invention
The invention aims to solve the technical problem of providing a start-stop control method and a start-stop control device for power related equipment, which can be beneficial to improving the efficiency and accuracy of determining a transformer or electric equipment needing to execute a start-up or stop strategy, and further can reduce the loss of the transformer and save electric energy.
To solve the above technical problem, a first aspect of the present invention discloses a start-stop control method for an electric power related device, the method comprising:
Basic data of each transformer in a transformer group are acquired, the transformer group at least comprises two transformers, and the basic data of each transformer at least comprises the capacity of each transformer, the active power of a low-voltage side and the reactive power of the low-voltage side;
calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer;
when any transformer with the total load rate smaller than or equal to a first preset warning value exists in the transformer group, determining a first target transformer which is currently in a working state and needs to be stopped, and outputting a stopping prompt aiming at the first target transformer, wherein the stopping prompt is used for prompting that the first target transformer can be stopped to supply power currently;
when the total load rate of the transformers in the transformer bank is larger than or equal to a second preset warning value, determining a second target transformer which is in an idle state and needs to be started currently from the transformer bank, outputting a starting prompt for the second target transformer, and/or determining target electric equipment which needs to be adjusted from all electric equipment which is currently supplied with power by the transformer bank, and outputting an adjustment prompt for the target electric equipment;
The starting prompt is used for prompting that the second target transformer needs to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target electric equipment can be adjusted currently or the target electric equipment is closed.
As an optional implementation manner, in the first aspect of the present invention, the transformer set includes at least a first transformer and a second transformer;
when the total load rate of the transformers in the transformer bank is smaller than or equal to a first preset warning value, determining a first target transformer which is currently in a working state and needs to be stopped from the transformer bank, wherein the method comprises the following steps:
when the total load rate of the first transformer is smaller than or equal to the first preset warning value and the total load rate of the second transformer is larger than the first preset warning value, determining that the second transformer is a first target transformer which is currently in a working state and needs to be stopped in the transformer group;
when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to the first preset warning value, determining a first target transformer which is in a working state and needs to be stopped from the transformer group according to target parameters corresponding to each transformer in the transformer group, wherein the target parameters corresponding to each transformer at least comprise loss rate of each transformer.
As an alternative embodiment, in the first aspect of the present invention, the formula of the total load ratio of each of the transformers in the transformer group is as follows:
η i Total ＝S/C i ；
wherein ,ηi Total Representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power of the low-voltage side of the transformer bank, C i Representing the capacity of an i-th said transformer in said transformer bank;
the formula for the total apparent power at the low voltage side of the transformer bank is expressed as follows:
S＝∑s i is low ，i＝1，2，...，n；
Wherein si is low to represent the apparent power of the i-th low-voltage side of the transformer in the transformer group, n represents the number of the transformers in the transformer group, and n is a natural number;
the formula for the apparent power at the low side of each of the transformers in the transformer bank is expressed as follows:
s i is low ＝P i is low +Q i is low ；
wherein ,Pi is low Representing the active power, Q, of the ith transformer low voltage side in the transformer bank i is low Representing reactive power at the low voltage side of the i-th said transformer in said transformer bank.
As an optional implementation manner, in the first aspect of the present invention, the target parameter corresponding to each transformer further includes a factory parameter of each transformer, and the factory parameter of each transformer includes at least one of a model number, a factory date, and a capacity of each transformer;
The basic data of each transformer in the transformer group also comprises active power of the high-voltage side of each transformer;
the method for determining the first target transformer which is in the working state and needs to be stopped according to the target parameters corresponding to each transformer in the transformer group comprises the following steps:
according to the basic data of each transformer, calculating the current loss rate of each transformer in the transformer group;
when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, determining the maximum current loss rate of the first transformer and the current loss rate of the second transformer, and determining a transformer corresponding to the maximum current loss rate as a first target transformer;
when the current loss rate of the first transformer is equal to the current loss rate of the second transformer, factory parameters of each transformer are obtained, and a first target transformer which is in a working state at present and needs to be stopped is determined according to the factory parameters of each transformer.
As an alternative embodiment, in the first aspect of the present invention, the formula of the current loss rate of each transformer in the transformer group is expressed as follows:
β i ＝(P i height -P i is low )/P i height ；
wherein ,βi Representing the current loss rate, P, of the ith transformer in the transformer bank i height Representing the active power of the i-th high-voltage side of the transformer in the transformer bank.
As an optional implementation manner, in the first aspect of the present invention, after calculating the current loss rate of each of the transformers in the transformer group according to the basic data of each of the transformers, the method further includes:
calculating the current load rate of each transformer in the transformer group according to the basic data of each transformer;
and correcting the current loss rate of each transformer according to the current load rate of each transformer based on a preset load rate-loss rate relation curve of each transformer so as to update the current loss rate of each transformer.
As an alternative embodiment, in the first aspect of the present invention, the formula of the current load rate of each transformer in the transformer group is expressed as follows:
η i ＝s i is low /C i ；
wherein ,ηi Representing the current load rate of the ith transformer in the transformer bank.
The second aspect of the invention discloses a start-stop control device of power related equipment, which comprises:
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring basic data of each transformer in a transformer group, the transformer group at least comprises two transformers, and the basic data of each transformer at least comprises the capacity of each transformer, the active power of a low-voltage side and the reactive power of the low-voltage side;
the calculation module is used for calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer;
the first determining module is used for determining a first target transformer which is currently in a working state and needs to be stopped when any transformer with the total load rate smaller than or equal to a first preset warning value exists in the transformer group, and outputting a stopping prompt aiming at the first target transformer, wherein the stopping prompt is used for prompting that the power supply can be stopped when the first target transformer is currently used for supplying power;
the second determining module is used for determining a second target transformer which is currently in an idle state and needs to be started from the transformer group and outputting a starting prompt for the second target transformer when the total load rate of the transformers in the transformer group is larger than or equal to a second preset warning value, and/or determining target power equipment which needs to be adjusted from all power equipment currently supplied by the transformer group and outputting an adjusting prompt for the target power equipment;
The starting prompt is used for prompting that the second target transformer is required to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target power equipment can be adjusted currently or the target power equipment is closed.
As an optional implementation manner, in the second aspect of the present invention, the transformer set includes at least a first transformer and a second transformer;
the first determining module determines a first target transformer which is currently in a working state and needs to be stopped from the transformer group in a specific mode that:
when the total load rate of the first transformer is smaller than or equal to the first preset warning value and the total load rate of the second transformer is larger than the first preset warning value, determining that the second transformer is a first target transformer which is currently in a working state and needs to be stopped in the transformer group;
when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to the first preset warning value, determining a first target transformer which is in a working state and needs to be stopped from the transformer group according to target parameters corresponding to each transformer in the transformer group, wherein the target parameters corresponding to each transformer at least comprise loss rate of each transformer.
As an alternative embodiment, in the second aspect of the present invention, the formula of the total load ratio of each of the transformers in the transformer group is expressed as follows:
η i Total ＝S/C i ；
wherein ,ηi Total Representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power of the low-voltage side of the transformer bank, C i Representing the capacity of an i-th said transformer in said transformer bank;
the formula for the total apparent power at the low voltage side of the transformer bank is expressed as follows:
S＝∑s i is low ，i＝1，2，...，n；
wherein ,si is low Representing the apparent power of the ith transformer low-voltage side in the transformer bank, n represents the number of transformers in the transformer bank, and n is a natural number;
the formula for the apparent power at the low side of each of the transformers in the transformer bank is expressed as follows:
s i is low ＝P i is low +Q i is low ；
wherein ,Pi is low Representing the active power, Q, of the ith transformer low voltage side in the transformer bank i is low Representing reactive power at the low voltage side of the i-th said transformer in said transformer bank.
As an optional implementation manner, in the second aspect of the present invention, the target parameter corresponding to each transformer further includes a factory parameter of each transformer, and the factory parameter of each transformer includes at least one of a model number, a factory date, and a capacity of each transformer;
The basic data of each transformer in the transformer group also comprises active power of the high-voltage side of each transformer;
the specific mode of determining the first target transformer which is currently in a working state and needs to be stopped in the transformer group according to the target parameters corresponding to each transformer in the transformer group by the first determining module comprises the following steps:
according to the basic data of each transformer, calculating the current loss rate of each transformer in the transformer group;
when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, determining the maximum current loss rate of the first transformer and the current loss rate of the second transformer, and determining a transformer corresponding to the maximum current loss rate as a first target transformer;
when the current loss rate of the first transformer is equal to the current loss rate of the second transformer, factory parameters of each transformer are obtained, and a first target transformer which is in a working state at present and needs to be stopped is determined according to the factory parameters of each transformer.
As an alternative embodiment, in the second aspect of the present invention, the formula of the current loss rate of each of the transformers in the transformer group is expressed as follows:
β i ＝(P i height -P i is low )/P i height ；
wherein ,βi Representing the current loss rate, P, of the ith transformer in the transformer bank i height Representing the active power of the i-th high-voltage side of the transformer in the transformer bank.
As an optional implementation manner, in a second aspect of the present invention, the first determining module is further configured to calculate, after calculating, according to the base data of each of the transformers, a current loss rate of each of the transformers in the transformer group, according to the base data of each of the transformers, a current load rate of each of the transformers in the transformer group; and correcting the current loss rate of each transformer according to the current load rate of each transformer based on a preset load rate-loss rate relation curve of each transformer so as to update the current loss rate of each transformer.
As an alternative embodiment, in the second aspect of the present invention, the formula of the current load rate of each transformer in the transformer group is expressed as follows:
η i ＝s i is low /C i ；
wherein ,ηi Representing the current load rate of the ith transformer in the transformer bank.
In a third aspect, the present invention discloses a start-stop control device for another power-related apparatus, the device comprising:
A memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to execute part or all of the steps of the start-stop control method for the power related device disclosed in the first aspect of the present invention.
A fourth aspect of the present invention discloses a computer storage medium storing computer instructions for executing part or all of the steps of the start-stop control method of the power-related device disclosed in the first aspect of the present invention when the computer instructions are called.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the basic data of each transformer in the transformer group is obtained, the transformer group at least comprises two transformers, and the basic data of each transformer at least comprises the capacity of each transformer, the active power of the low-voltage side and the reactive power of the low-voltage side; according to the basic data of each transformer, calculating the total load rate of each transformer in the transformer group; when any transformer with the total load rate smaller than or equal to a first preset warning value exists in the transformer group, determining a first target transformer which is currently in a working state and needs to be stopped, and outputting a stopping prompt aiming at the first target transformer, wherein the stopping prompt is used for prompting that the first target transformer can be stopped to supply power currently; when the total load rate of the transformers in the transformer bank is larger than a second preset warning value, determining a second target transformer which is currently in an idle state and needs to be started from the transformer bank, outputting a starting prompt aiming at the second target transformer, and/or determining target electric equipment which needs to be adjusted from all electric equipment which is currently supplied by the transformer bank, and outputting an adjusting prompt aiming at the target electric equipment; the starting prompt is used for prompting that the second target transformer is required to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target electric equipment can be adjusted currently or the target electric equipment is closed. Therefore, the invention can intelligently determine the target power equipment to be optimally adjusted according to the corresponding data of the power related equipment, is beneficial to improving the accuracy and efficiency of determining the transformer or the electric equipment which needs to execute the starting or stopping strategy, and further can reduce the loss of the transformer and save the electric energy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a start-stop control method of an electric power related device according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for controlling start-stop of a power-related device according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of determining a first target transformer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a start-stop control device of an electric power related apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a start-stop control device of another power-related apparatus according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, 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.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or device that comprises a list of steps or elements is not limited to the list of steps or elements but may, in the alternative, include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a start-stop control method and a start-stop control device for power related equipment, which can intelligently determine target power equipment to be optimally adjusted according to corresponding data of the power related equipment, are beneficial to improving accuracy and efficiency of determining transformers or electric equipment to be subjected to start-up or stop strategies, and further can reduce loss of the transformers and save electric energy. The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a start-stop control method of an electric power related device according to an embodiment of the invention. The start-stop control method of the power related device described in fig. 1 is applied to a start-stop control device of the power related device, for example, in a power management or operation and maintenance system of a power consumer and an industrial internet platform, and the embodiment of the invention is not limited. As shown in fig. 1, the start-stop control method of the power-related device may include the following operations:
step 101, obtaining basic data of each transformer in the transformer group.
In the embodiment of the invention, each transformer in the transformer group can be connected through the interconnecting cabinet, and the interconnecting cabinet at least comprises the interconnecting switch, and when two paths of power supplies transmit power simultaneously, the interconnecting switch is disconnected. In the specific implementation, when only one power supply or all power supplies in the transformer group are not needed to transmit power, the power requirement of a user can be met, or when a certain power supply is in power failure or power failure, the connecting switch is closed; when the power supply can not meet the user requirement only through the power supply which is transmitting power, or the power is recovered from the end which is originally in power failure, the contact switch is disconnected, so that the power utilization user can select or switch the running state of each transformer, or the load can be selectively cut off under the fault condition.
Optionally, each transformer group includes at least two transformers, and the number of the transformers is not limited in the embodiment of the present invention. Optionally, the obtained basic data of each transformer at least comprises the capacity of each transformer, the active power of the low voltage side and the reactive power of the low voltage side.
Step 102, calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer.
The total load ratio of each transformer in the transformer bank is understood to be the load ratio of a single transformer in a bank of transformers, if switching to that single transformer powers all consumers of power for which all transformers in the bank are responsible. The total load rate of each transformer in the transformer group needs to be calculated by the data of the capacity of each transformer, the active power of the low voltage side, the reactive power of the low voltage side and the like.
In the embodiment of the invention, the total load rate of a single transformer in the transformer bank is the ratio of the total apparent power of the low-voltage side of the transformer bank to the capacity of the transformer, and the formula is as follows:
η i Total ＝S/C i； wherein ,ηi Total Representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power at the low side of the transformer bank, C i Representing the capacity of the ith transformer in the transformer bank; as total load factor of the first transformer = total apparent power S of the low side of the transformer bank +.capacity of the first transformer;
the total apparent power of the low voltage side of the transformer bank is the sum of the apparent power of each transformer low voltage side in the transformer bank and is expressed as follows:
S＝∑s i is low I=1, 2, n; wherein s is i is low The apparent power of the low-voltage side of the ith transformer in the transformer bank is represented, n represents the number of transformers in the transformer bank, and n is a natural number. For example, if there are three transformers in a transformer bank, then the total apparent power on the low-voltage side of the transformer bank = apparent power on the low-voltage side of the first transformer + apparent power on the low-voltage side of the second transformer + apparent power on the low-voltage side of the third transformer;
the apparent power of the low-voltage side of each transformer in the transformer group is the square of the sum of the square of the active power of the low-voltage side of the transformer and the square of the reactive power of the low-voltage side of the transformer, and the formula is expressed as follows:
s i is low ＝P i is low +Q i is low； wherein ,Pi is low Representing the active power, Q, of the low-voltage side of the ith transformer in the transformer bank i is low Representing the reactive power of the low voltage side of the i-th transformer in the transformer bank. As apparent power at the low-voltage side of the first transformer = square of the sum of the square of the active power at the low-voltage side of the first transformer and the square of the reactive power at the low-voltage side of the first transformer.
Step 103, when any transformer with the total load rate smaller than or equal to a first preset warning value exists in the transformer group, determining a first target transformer which is currently in a working state and needs to be stopped from the transformer group, and outputting a stopping prompt aiming at the first target transformer.
In the embodiment of the invention, the stop prompt is used for prompting that the power supply using the first target transformer can be stopped at present. The first preset warning value is a preset value, the total load rate of the transformer does not exceed the first preset warning value, which is a precondition for executing the transformer optimization strategy, so that the scene that the transformer optimization strategy needs to be executed (the idle transformer is shut down) can be accurately and efficiently identified, the highest efficiency, the minimum loss and the potential safety hazard of the transformer in operation are ensured. Alternatively, the first preset warning value may be 80%, and it should be specifically noted that the evaluation is generally performed at a value of 80%, but in an extreme case, the first preset warning value may range from 70% to 85%.
The first target transformers may be idle transformers, the number of the first target transformers may be zero, one or a plurality of first target transformers, and the number of transformers in the transformer group with the total load rate being less than or equal to the first preset warning value may be zero, one or a plurality of first target transformers. In an alternative embodiment, when the total load rate of all transformers in the transformer bank is greater than the first preset warning value (where the number of transformers in the transformer bank having the total load rate less than or equal to the first preset warning value is zero and the number of first target transformers is zero), the process is ended.
In the implementation, when the total load rate of any one transformer in the transformer bank is smaller than or equal to a first preset warning value, the transformer can be switched to power all electric equipment responsible for power supply of all transformers in the transformer bank in a load switching manner, so that a power user or a power operation and maintenance personnel can execute a transformer optimization strategy, an idle transformer (the transformer with the total load rate smaller than or equal to the first preset warning value in the transformer bank in other working states) is turned off, and a connection switch is turned on. For example, if there are two transformers in the transformer bank, the total load factor of the first transformer is 80% or less, and the condition for executing the transformer optimization strategy is satisfied, the tie switch may be closed, and the transformer bank may be switched to be powered by the first transformer entirely.
A policy bank is preset for optimizing the transformer or the electric equipment, and guidance is provided for shutting down the transformer, starting the transformer and adjusting the electric equipment. The embodiment of the invention exemplifies the scene of executing a transformer optimization strategy (turning off an idle transformer), and takes Shenzhen as an example, as Shenzhen belongs to a southern subtropical monsoon climate, the average temperature of the wind is 23.0 ℃ in long summer and short winter, the average temperature of 1 month in one year is the lowest, the average temperature is 15.4 ℃ and the average temperature of 7 months is the highest, and the average temperature is 28.9 ℃; the summer is as long as 6 months (5-10 months), no heating system exists, and accordingly the starting time of the high-power electric equipment, namely the cold air conditioner, is judged to be 5-10 months, so that the transformer optimization strategy (turning off the idle transformer) can be considered to be executed in 11 months-4 months in the coming year for the last-stage transformer for supplying power to the cold air conditioner.
Step 104, when the total load rate of the transformers in the transformer bank is greater than or equal to a second preset warning value, determining a second target transformer which is currently in an idle state and needs to be started from the transformer bank, outputting a starting prompt aiming at the second target transformer, and/or determining target electric equipment which needs to be adjusted from all electric equipment which is currently powered by the transformer bank, and outputting an adjusting prompt aiming at the target electric equipment.
In the embodiment of the invention, the starting prompt is used for prompting that the second target transformer is required to be started currently for supplying power, and the adjusting prompt is used for prompting that the working parameters of the target electric equipment can be adjusted currently or the target electric equipment is closed. The second preset warning value is a preset value, the total load rate of the transformer is not smaller than the second preset warning value, and the condition that the transformer optimization strategy is executed (idle transformer is started and/or electric equipment is adjusted) is provided, so that on one hand, the method is beneficial to helping electricity users to save basic electricity expenditure to the greatest extent and improving the electricity utilization efficiency, and on the other hand, the method is beneficial to accurately and efficiently identifying the scene where the transformer optimization strategy needs to be executed. The setting of the second preset warning value may refer to the first preset warning value in step 103.
The number of the second target transformers may be zero, one or more, and the number of the transformers with the total load rate greater than or equal to the second preset warning value in the transformer group may be zero, one or more. And when the total load rate of any transformer in the transformer group is smaller than a second preset warning value, ending the flow. The target powered device may be a powered device that is not commonly used or temporarily not needed, e.g., no cold air conditioner is needed in winter, no water heater temperature is set too high in summer, no air purifier is needed in haze-free weather, etc.
In the implementation, when the total load rate of the transformers in the transformer bank is greater than or equal to the second preset warning value, it is indicated that the transformers in the transformer bank which are supplying power cannot be loaded to supply power to all the electric equipment responsible for supplying power to all the transformers in the transformer bank, so that an electricity user or an electricity operation and maintenance personnel can execute a transformer optimization strategy, turn off the tie switch to turn on the idle transformers (other transformers in idle states except the transformers in which the total load rate in the transformer bank is greater than or equal to the second preset warning value), or keep the tie switch closed, and adjust working parameters of part of the electric equipment or turn off part of the electric equipment.
The embodiment of the invention illustrates the scene of executing the transformer optimization strategy (starting an idle transformer and/or adjusting electric equipment), and also takes Shenzhen as an example, the summer of Shenzhen is as long as 6 months (5-10 months), so that the executing of the transformer optimization strategy (starting the idle transformer) in 5-10 months can be considered for the last-stage transformer for supplying power to the cooling air conditioner; optionally, in 5-10 months, due to high temperature in summer, less haze weather and higher air quality, the previous stage transformer for supplying power to the fresh air device or other air purifying devices can consider the strategy of adjusting working parameters or turning off in 5-10 months, so as to reduce the load of the transformer, and ensure that the total load rate of the running transformer is smaller than a second preset warning value even if an idle transformer is not turned on; or, executing the strategy of turning on the idle transformer and adjusting the working parameters of the electric equipment or turning off the electric equipment at the same time.
In the embodiment of the present invention, the steps 103 and 104 are not sequentially executed, and the step 103 may be executed first and then the step 104 may be executed first, or the step 104 may be executed first and then the step 103 may be executed, which is not limited in the embodiment of the present invention.
Therefore, the start-stop control method for the power related equipment described by the embodiment of the invention can intelligently determine the target power equipment to be optimally adjusted according to the corresponding data of the power related equipment, is beneficial to improving the accuracy and efficiency of determining the transformer or the electric equipment which needs to execute the start-up or stop strategy, and further can reduce the loss of the transformer and save electric energy.
Example two
Referring to fig. 2, fig. 2 is a flow chart of another start-stop control method of a power-related device according to an embodiment of the invention. The start-stop control method of the power related device described in fig. 2 is applied to a start-stop control device of the power related device, for example, in a power management or operation and maintenance system of a power consumer and an industrial internet platform, and the embodiment of the invention is not limited. As shown in fig. 2, the start-stop control method of the power-related device may include the following operations:
in step 201, basic data of each transformer in the transformer group is obtained.
Step 202, calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer.
In the embodiment of the present invention, for other descriptions of step 201 to step 202, please refer to the detailed descriptions of step 101 to step 102 in the first embodiment, and the description of the embodiment of the present invention is omitted.
Step 203, determining that the second transformer is the first target transformer in the transformer group which is currently in a working state and needs to be stopped when the total load rate of the first transformer is smaller than or equal to the first preset warning value and the total load rate of the second transformer is larger than the first preset warning value.
In the embodiment of the invention, the transformer group at least comprises a first transformer and a second transformer, when the total load rate of the first transformer is smaller than a first preset warning value and the total load rate of the second transformer is larger than the first preset warning value, the condition that all electric equipment in the transformer group is powered by all transformers in charge of supplying power can be indicated to be powered by only starting the first transformer, and the condition that all electric equipment in the transformer group is powered by all transformers in charge of supplying power is too large by only starting the second transformer to not meet the condition of executing a transformer optimization strategy is indicated, and at the moment, the power supply can be switched to be powered by all the first transformer, namely, the second transformer (namely, the first target transformer) which is working is turned off, and the tie switch is closed.
Step 204, when the total load rate of the first transformer and the total load rate of the second transformer are both smaller than or equal to a first preset warning value, determining a first target transformer which is currently in a working state and needs to be stopped according to the target parameters corresponding to each transformer in the transformer group.
In the embodiment of the invention, when the total load rate of the first transformer and the total load rate of the second transformer are both smaller than or equal to the first preset warning value, it is indicated that only the first transformer is turned on, or only the second transformer is turned on to supply power to all electric equipment responsible for power supply of all transformers in the transformer group, that is, all conditions for executing a transformer optimization strategy are satisfied, at this time, which transformer (first target transformer) is specifically turned off can be determined according to the target parameters corresponding to each transformer in the transformer group, and the target parameters corresponding to each transformer at least include the loss rate of each transformer.
In an alternative embodiment, the target parameters corresponding to each transformer further include factory parameters of each transformer; the base data for each transformer acquired in step 201 also includes the active power of the high side of each transformer.
As shown in fig. 3, according to the target parameters corresponding to each transformer in the transformer bank, determining the first target transformer which is currently in a working state and needs to be stopped from the transformer bank may include the following sub-steps:
step 21, calculating the current loss rate of each transformer in the transformer group according to the basic data of each transformer;
In the embodiment of the invention, the current loss rate of each transformer in the transformer group is the ratio of the difference between the active power of the high-voltage side of the transformer and the active power of the low-voltage side of the transformer to the active power of the high-voltage side of the transformer, and the formula is expressed as follows:
β i ＝(P i height -P i is low )/P i height； wherein ,βi Representing the current loss rate, P, of the ith transformer in the group of transformers i height Representing the active power of the high side of the i-th transformer in the transformer bank. For example, the current loss rate of the first transformer = (active power of the high-voltage side of the first transformer-active power of the low-voltage side of the first transformer)/(active power of the high-voltage side of the first transformer).
A sub-step 22 of determining a maximum current loss rate of the first transformer and the current loss rate of the second transformer when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, and determining a transformer corresponding to the maximum current loss rate as a first target transformer;
in the embodiment of the invention, when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to the first preset warning value, the first target transformer is determined through the loss rate of each transformer, and when the current loss rate of the first transformer is different from the current loss rate of the second transformer, the transformer with larger current loss rate is selected as the first target transformer which is in the current working state and needs to be stopped, thereby reducing the loss of the transformer and prolonging the service life of the transformer.
And step 23, when the current loss rate of the first transformer is equal to that of the second transformer, acquiring the factory parameters of each transformer, and determining the first target transformer which is in the working state and needs to be stopped according to the factory parameters of each transformer.
In the embodiment of the invention, the loss rate of the transformer is a core parameter of a first target transformer which needs to be shut down, and when the first target transformer cannot be determined according to the loss rate of the transformer, the loss rate of the transformer can be determined according to the factory parameters of each transformer. The factory parameters of each transformer comprise at least one of the model number, the factory date and the capacity of each transformer. Optionally, the first target transformer may have a priority according to factory parameters, and the specific order is as follows: firstly, comparing the capacities of transformers, and preferentially determining the corresponding transformer with larger capacity as the first target transformer which is in the current working state and needs to be stopped. For example, among two transformers having a transformer capacity of 1250KVA and a transformer capacity of 1000KVA, the transformer capacity of 1250KVA is preferentially selected as the first target transformer. And secondly, comparing the design serial numbers in the transformer models, and preferentially determining the corresponding transformer with the smaller design serial number as the first target transformer which is in the current working state and needs to be stopped. For example, two transformers with design numbers SCB9-1000 and SCB10-1000 are compared, and SCB9-1000 is preferably selected as the first target transformer. And finally, comparing the delivery time of the transformer, and preferentially determining the delivery time as a first target transformer which is in a working state and needs to be stopped. For example, when the factory time is 2020 month 1, the year 2020 month 1 is preferred over 2021.
Therefore, according to the alternative embodiment, after the fact that the total load rate of each transformer in the transformer group is smaller than the first preset warning value is determined, the first target transformer is determined according to the current loss rate of the transformer or the factory parameter selection, so that the transformer optimization strategy (the first target transformer is turned off) is executed on the determined and accurate first target transformer, the efficiency is high, the accuracy is high, the transformers can be protected to the greatest extent, the transformer loss is reduced, and the service life of the transformer is prolonged.
In this alternative embodiment, as shown in fig. 3, after calculating the current loss rate of each transformer in the transformer group according to the basic data of each transformer, according to the target parameter corresponding to each transformer in the transformer group, the first target transformer which is currently in a working state and needs to be stopped is determined from the transformer group, and the following sub-steps may be further included:
in a substep 31, the current load factor of each transformer in the transformer group is calculated from the basis data of each transformer.
In the embodiment of the invention, the current load rate of each transformer in the transformer group is the ratio of the apparent power of the low-voltage side of the transformer to the capacity of the transformer, and the calculation formula is expressed as follows:
η i ＝s i /C i； wherein ,ηi Representing the current load factor of the i-th transformer in the transformer bank. For example the current load factor of the first transformer = apparent power at the low side of the first transformer +.capacity of the first transformer.
In a substep 32, the current loss rate of each transformer is modified according to the current load rate of each transformer based on the preset load rate-loss rate relationship curve of each transformer, so as to update the current loss rate of each transformer.
In the embodiment of the present invention, since the loss rate of the transformer is a fluctuation value, the loss rates corresponding to different load rates of the transformers are not identical, and at different time points, even if the load rates of the transformers are identical, the loss rates of the transformers corresponding to the different load rates are not identical, so that the current loss rate of the transformers can be confirmed according to the calculated load rate of the transformers based on the correlation curve of the load rate-loss rate of the transformers, so as to correct the deviation between the current loss rate calculated in the substep 21 and the current loss rate used for determining the first target transformer. If the current loss rate determined from the load rate-loss rate relationship of the transformer does not match the current loss rate calculated in sub-step 21, the current loss rate is updated and the current loss rate determined from the load rate-loss rate relationship of the transformer is used in sub-step 22 to determine the first target transformer. The load rate-loss rate relation curve of the transformer can be a pre-drawn curve, and the drawing process is as follows: (1) Collecting samples of the transformer loss rate (which may be at different time points when the transformer load rate is 1%) when the transformer load rate is 1%, and then selecting a regression value according to the sample distribution; (2) When the transformer load rate is 2% -100%, analyzing according to the step (1), and selecting a regression value; (3) And finally, drawing a load rate-loss rate relation graph of the transformer according to all the confirmed regression values.
It can be seen that, in this alternative embodiment, after the current loss rate of each transformer in the transformer group is calculated, the current loss rate corresponding to the current load rate of the transformer is selectively determined based on the load rate-loss rate relationship curve of the transformer, and the calculated current loss rate is corrected, so that the current loss rate for determining the first target transformer is updated, and the accuracy of determining the first target transformer is improved.
Step 205, when the total load rate of the transformers in the transformer bank is equal to or greater than a second preset warning value, determining a second target transformer which is currently in an idle state and needs to be started from the transformer bank, outputting a starting prompt for the second target transformer, and/or determining target electric equipment which needs to be adjusted from all electric equipment which is currently powered by the transformer bank, and outputting an adjusting prompt for the target electric equipment.
In the embodiment of the present invention, for other descriptions of step 205, please refer to the detailed description of step 104 in the first embodiment, and the detailed description of the embodiment of the present invention is omitted.
Therefore, the start-stop control method for the power related equipment described by the embodiment of the invention can intelligently determine the target power equipment to be optimally adjusted according to the corresponding data of the power related equipment, is beneficial to improving the accuracy and efficiency of determining the transformer or the electric equipment which needs to execute the start-up or stop strategy, and further can reduce the loss of the transformer and save electric energy.
Example III
Referring to fig. 4, fig. 4 is a schematic structural diagram of a start-stop control device of an electric power related apparatus according to an embodiment of the invention. The start-stop control device of the power related device described in fig. 4 may be applied to a power management or operation and maintenance system of a power consumer and an industrial internet platform, and the embodiment of the invention is not limited. As shown in fig. 4, the apparatus may include:
the obtaining module 401 is configured to obtain basic data of each transformer in a transformer group, where the transformer group includes at least two transformers, and the basic data of each transformer includes at least a capacity of each transformer, an active power of a low-voltage side, and a reactive power of the low-voltage side;
a calculation module 402, configured to calculate a total load rate of each transformer in the transformer group according to the basic data of each transformer;
the first determining module 403 is configured to determine, from the transformer group, a first target transformer that is currently in a working state and needs to be stopped when any transformer with a total load rate less than or equal to a first preset warning value exists in the transformer group, and output a stopping prompt for the first target transformer, where the stopping prompt is used to prompt that the first target transformer can be currently stopped for power supply;
The second determining module 404 is configured to determine, from the transformer group, a second target transformer that is currently in an idle state and needs to be started, and output a start prompt for the second target transformer, and/or determine, from all power devices currently supplied by the transformer group, a target power device that needs to be adjusted, and output an adjustment prompt for the target power device, when the total load rate of the transformers in the transformer group is greater than a second preset warning value;
the starting prompt is used for prompting that the second target transformer is required to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target power equipment can be adjusted currently or the target power equipment is closed.
Therefore, the start-stop control device for the power related equipment described in fig. 4 can intelligently determine the target power equipment to be optimally adjusted according to the corresponding data of the power related equipment, which is beneficial to improving the accuracy and efficiency of determining the transformer or the electric equipment to be subjected to the start-up or stop strategy, so that the loss of the transformer can be reduced, and the electric energy is saved.
In an alternative embodiment, the transformer group comprises at least a first transformer and a second transformer;
The first determining module 403 determines, from the transformer group, a first target transformer that is currently in a working state and needs to be stopped, specifically:
when the total load rate of the first transformer is smaller than or equal to a first preset warning value and the total load rate of the second transformer is larger than the first preset warning value, determining that the second transformer is a first target transformer which is currently in a working state and needs to be stopped in the transformer group;
when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to a first preset warning value, determining a first target transformer which is in a working state and needs to be stopped from the transformer group according to target parameters corresponding to each transformer in the transformer group, wherein the target parameters corresponding to each transformer at least comprise the loss rate of each transformer.
Alternatively, the formula for the total load ratio of each transformer in the transformer bank is as follows:
η i Total ＝S/C i ；
wherein ,ηi Total Representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power at the low side of the transformer bank, C i Representing the capacity of the ith transformer in the transformer bank; and the formula for the total apparent power at the low voltage side of the transformer bank is expressed as follows:
S＝∑s i is low ，i＝1，2，...，n；
wherein ,si is low The apparent power of the low-voltage side of the ith transformer in the transformer bank is represented, n represents the number of transformers in the transformer bank, and n is a natural number; and, the apparent power at the low side of each transformer in the transformer bank is formulated as follows:
s i is low ＝P i is low +Q i is low ；
wherein ,Pi is low Representing the active power, Q, of the low-voltage side of the ith transformer in the transformer bank i is low Representing the reactive power of the low voltage side of the i-th transformer in the transformer bank.
In this optional embodiment, the target parameter corresponding to each transformer further includes a factory parameter of each transformer, and the factory parameter of each transformer includes at least one of a model number, a factory date, and a capacity of each transformer;
the base data of each transformer in the transformer group also comprises active power of the high-voltage side of each transformer;
the specific manner of determining, by the first determining module 403, the first target transformer that is currently in a working state and needs to be stopped in the transformer group according to the target parameter corresponding to each transformer in the transformer group includes:
according to the basic data of each transformer, calculating the current loss rate of each transformer in the transformer group;
when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, determining the maximum current loss rate of the first transformer and the current loss rate of the second transformer, and determining the transformer corresponding to the maximum current loss rate as a first target transformer;
When the current loss rate of the first transformer is equal to that of the second transformer, factory parameters of each transformer are obtained, and a first target transformer which is in a working state and needs to be stopped is determined according to the factory parameters of each transformer.
Alternatively, the formula for the current loss rate for each transformer in the transformer bank is expressed as follows:
β i ＝(P i height -P i is low )/P i height ；
wherein ,βi Representing the current loss rate, P, of the ith transformer in the transformer bank i height Representing the active power of the high side of the i-th transformer in the transformer bank.
Therefore, after the device described in fig. 4 is implemented, the first target transformer can be determined according to the current loss rate of the transformers or the factory parameter selection after the total load rate of each transformer in the transformer group is determined to be smaller than the first preset warning value, so that the determined and accurate first target transformer is subjected to the transformer optimization strategy (the first target transformer is turned off), the efficiency is high, the accuracy is high, the transformers can be protected to the greatest extent, the transformer loss is reduced, and the service life of the transformers is prolonged.
In this alternative embodiment, the first determining module 403 is further configured to calculate, after calculating the current loss rate of each transformer in the transformer group according to the base data of each transformer, the current load rate of each transformer in the transformer group according to the base data of each transformer; and correcting the current loss rate of each transformer according to the current load rate of each transformer based on a preset load rate-loss rate relation curve of each transformer so as to update the current loss rate of each transformer.
Alternatively, the formula for the current load rate of each transformer in the transformer bank is expressed as follows:
η i ＝s i is low /C i ；
wherein ,ηi Representing the current load factor of the i-th transformer in the transformer bank.
It can be seen that the apparatus described in fig. 4 can also be implemented to selectively determine the current loss rate corresponding to the current load rate of the transformer based on the load rate-loss rate relationship curve of the transformer after calculating the current loss rate of each transformer in the transformer bank, and correct the calculated current loss rate, and update the current loss rate used for determining the first target transformer, thereby improving the accuracy of determining the first target transformer.
Example IV
Referring to fig. 5, fig. 5 is a schematic structural diagram of a start-stop control device of another power-related apparatus according to an embodiment of the invention. As shown in fig. 5, the apparatus may include:
a memory 501 in which executable program codes are stored;
a processor 502 coupled to the memory 501;
the processor 502 invokes executable program codes stored in the memory 501 to execute the steps in the start-stop control method of the power related device described in the first or second embodiment of the present invention.
Example five
The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the start-stop control method of the power related equipment described in the first embodiment or the second embodiment of the invention when the computer instructions are called.
Example six
An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute steps in a start-stop control method of an electric power-related apparatus described in the first embodiment or the second embodiment of the present invention.
The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the above technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, including Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (PROM), erasable programmable Read-Only Memory (Erasable Programmable Read 0nly Memory,EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the embodiment of the invention discloses a start-stop control method and a start-stop control device for power related equipment, which are disclosed by the embodiment of the invention only for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (7)

1. A method for controlling start-stop of a power-related device, the method comprising:
basic data of each transformer in a transformer set are acquired, wherein the transformer set at least comprises a first transformer and a second transformer, and the basic data of each transformer at least comprises the capacity of each transformer, the active power of a low-voltage side, the reactive power of the low-voltage side and the active power of a high-voltage side; the target parameters corresponding to each transformer at least comprise loss rate of each transformer and factory parameters of each transformer, and the factory parameters of each transformer comprise at least one of model, factory date and capacity of each transformer;
Calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer;
when the total load rate of the first transformer is smaller than or equal to a first preset warning value and the total load rate of the second transformer is larger than the first preset warning value, determining that the second transformer is a first target transformer which is currently in a working state and needs to be stopped in the transformer group;
when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to the first preset warning value, calculating the current loss rate of each transformer in the transformer group according to the basic data of each transformer; when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, determining the maximum current loss rate of the first transformer and the current loss rate of the second transformer, and determining a transformer corresponding to the maximum current loss rate as a first target transformer; when the current loss rate of the first transformer is equal to the current loss rate of the second transformer, obtaining factory parameters of each transformer, and determining a first target transformer which is in a working state and needs to be stopped according to the factory parameters of each transformer;
Outputting a stop report prompt aiming at the first target transformer, wherein the stop report prompt is used for prompting that the first target transformer can be used for power supply in a current suspension mode;
when the total load rate of the transformers in the transformer bank is larger than or equal to a second preset warning value, determining a second target transformer which is in an idle state and needs to be started currently from the transformer bank, outputting a starting prompt for the second target transformer, and/or determining target electric equipment which needs to be adjusted from all electric equipment which is currently supplied with power by the transformer bank, and outputting an adjustment prompt for the target electric equipment;
the starting prompt is used for prompting that the second target transformer is required to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target electric equipment can be adjusted currently or the target electric equipment is closed;
the formula of the total load rate of each transformer in the transformer group is expressed as follows:
wherein ,representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power of the low side of the transformer bank, +.>Representing the capacity of an i-th said transformer in said transformer bank;
The formula for the total apparent power at the low voltage side of the transformer bank is expressed as follows:
wherein ,Si is low Representing the apparent power of the ith transformer low-voltage side in the transformer bank, n represents the number of transformers in the transformer bank, and n is a natural number;
the formula for the apparent power at the low side of each of the transformers in the transformer bank is expressed as follows:
wherein ,Pi is low Representing the active power, Q, of the ith transformer low voltage side in the transformer bank i is low Representing reactive power at the low voltage side of the i-th said transformer in said transformer bank.
2. The start-stop control method of power related equipment according to claim 1, wherein the formula of the current loss rate of each transformer in the transformer group is expressed as follows:
wherein ,representing the current loss rate, P, of the ith transformer in the transformer bank i height Representing the active power of the i-th high-voltage side of the transformer in the transformer bank.
3. The start-stop control method of a power-related device according to claim 1, wherein after said calculating a current loss rate of each of said transformers in said transformer group based on basic data of each of said transformers, said method further comprises:
Calculating the current load rate of each transformer in the transformer group according to the basic data of each transformer;
and correcting the current loss rate of each transformer according to the current load rate of each transformer based on a preset load rate-loss rate relation curve of each transformer so as to update the current loss rate of each transformer.
4. A start-stop control method for an electric power related apparatus according to claim 3, wherein the formula of the current load rate of each of the transformers in the transformer group is expressed as follows:
wherein ,representing the current load rate of the ith transformer in the transformer bank.
5. A start-stop control device for an electric power-related apparatus, the device comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring basic data of each transformer in a transformer group, the transformer group at least comprises a first transformer and a second transformer, and the basic data of each transformer at least comprises the capacity of each transformer, the active power of a low-voltage side, the reactive power of the low-voltage side and the active power of a high-voltage side; the target parameters corresponding to each transformer at least comprise loss rate of each transformer and factory parameters of each transformer, and the factory parameters of each transformer comprise at least one of model, factory date and capacity of each transformer;
The calculation module is used for calculating the total load rate of each transformer in the transformer group according to the basic data of each transformer;
the first determining module is used for determining that the second transformer is a first target transformer which is currently in a working state and needs to be stopped in the transformer group when the total load rate of the first transformer is smaller than or equal to a first preset warning value and the total load rate of the second transformer is larger than the first preset warning value; when the total load rate of the first transformer and the total load rate of the second transformer are smaller than or equal to the first preset warning value, calculating the current loss rate of each transformer in the transformer group according to the basic data of each transformer; when the current loss rate of the first transformer is not equal to the current loss rate of the second transformer, determining the maximum current loss rate of the first transformer and the current loss rate of the second transformer, and determining a transformer corresponding to the maximum current loss rate as a first target transformer; when the current loss rate of the first transformer is equal to the current loss rate of the second transformer, obtaining factory parameters of each transformer, and determining a first target transformer which is in a working state and needs to be stopped according to the factory parameters of each transformer; and outputting a stop reporting prompt for the first target transformer, the stop reporting prompt being used for prompting that the first target transformer can be used for power supply in a current suspension mode;
The second determining module is used for determining a second target transformer which is currently in an idle state and needs to be started from the transformer group and outputting a starting prompt for the second target transformer when the total load rate of the transformers in the transformer group is larger than or equal to a second preset warning value, and/or determining target power equipment which needs to be adjusted from all power equipment currently supplied by the transformer group and outputting an adjusting prompt for the target power equipment;
the starting prompt is used for prompting that the second target transformer is required to be started currently to supply power, and the adjusting prompt is used for prompting that the working parameters of the target power equipment can be adjusted currently or the target power equipment is closed;
the formula of the total load rate of each transformer in the transformer group is expressed as follows:
wherein ,representing the total load factor of the ith transformer in the transformer bank, S representing the total apparent power of the low side of the transformer bank, +.>Representing the capacity of an i-th said transformer in said transformer bank;
the formula for the total apparent power at the low voltage side of the transformer bank is expressed as follows:
wherein ,Si is low Representing the apparent power of the ith transformer low-voltage side in the transformer bank, n represents the number of transformers in the transformer bank, and n is a natural number;
the formula for the apparent power at the low side of each of the transformers in the transformer bank is expressed as follows:
wherein ,Pi is low Representing the active power, Q, of the ith transformer low voltage side in the transformer bank i is low Representing reactive power at the low voltage side of the i-th said transformer in said transformer bank.
6. A start-stop control device for an electric power-related apparatus, the device comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform the start-stop control method of the power-related device of any one of claims 1-4.
7. A computer storage medium storing computer instructions which, when invoked, are adapted to perform the start-stop control method of a power-related device according to any one of claims 1-4.
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CN111668847A (en) * 2020-06-18 2020-09-15 中国电力科学研究院有限公司 Power optimization distribution method and system for cross-cell photovoltaic absorption

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