CN113595234B - Power configuration adjustment method, adjustment device and system of uninterruptible power supply - Google Patents
Power configuration adjustment method, adjustment device and system of uninterruptible power supply Download PDFInfo
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- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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Abstract
The invention provides a power configuration adjusting method, a power configuration adjusting device and a power configuration adjusting system of an uninterruptible power supply. The uninterruptible power supply is electrically connected with a plurality of power consumption modules and comprises at least one first power supply module and at least one second power supply module; at least one first circuit and at least one second circuit are connected between each power consumption module and the uninterruptible power supply, and adjusting resistors are arranged on the first circuit and the second circuit. The invention solves the technical problem that the uninterrupted power supply in the prior art cannot realize fine control on electric equipment with different power consumptions, thereby causing energy waste.
Description
Technical Field
The invention relates to the technical field of power distribution systems, in particular to a power configuration adjusting method, a power configuration adjusting device and a power configuration adjusting system of an uninterruptible power supply.
Background
Many known power distribution systems are serviced by the local utility's power grid. When the power grid is disconnected with the power distribution system due to faults, the power distribution system supplies power for the power consumption equipment, so that the power distribution system can replace the power grid to supply power under the condition of power failure, and the normal running of the daily life of people is ensured. Specifically, a common power distribution system includes a diesel generator and the like, but the diesel generator generates a large noise in an operation process, and in addition, a diesel power generation mode is not environment-friendly.
Therefore, a new type of power distribution system is gradually introduced to replace the conventional secondary power supply of the generator, and applications including, for example, an uninterruptible power supply are increasingly popular.
However, in the prior art, the following technical problems exist when an uninterruptible power supply is used for supplying power:
1) when the uninterruptible power supply supplies power to the power consumption equipment, various power modules in the uninterruptible power supply are not reasonably configured according to the power consumption capacity of the power consumption equipment, for example, when the power consumption of the power consumption equipment is larger or smaller, the unified power modules are adopted to supply power to the power consumption equipment, that is, the effect of fine control according to different power consumption objects is not achieved;
2) in addition, the uninterruptible power supplies in the prior art are usually provided with a plurality of power modules with the same electric quantity, so that the power modules conducted with the electric equipment with higher power consumption are frequently charged and discharged, and the service life of the power modules is shortened; on the contrary, the charging and discharging times of the power module conducted with the electric equipment with low power consumption are too few, and the power module may not meet the charging and discharging service life standard after long-term use, so that the internal performance is weakened due to too long use time, and the energy is wasted.
Disclosure of Invention
The invention solves the technical problem that the uninterrupted power supply in the prior art cannot realize fine control on electric equipment with different power consumptions, thereby causing energy waste.
In order to solve the above problems, the present invention provides a power configuration adjustment method for an uninterruptible power supply, where the uninterruptible power supply is electrically connected to a plurality of power consuming modules, and the uninterruptible power supply includes at least one first power module and at least one second power module; a first circuit is connected between each power consumption module and each first power supply module, and a second circuit is connected between the power consumption module and the second power supply module, wherein the first circuit and the second circuit are respectively provided with an adjusting resistor; the power configuration adjustment method comprises the following steps: s1, after the UPS is started, judging whether the UPS is in a charging mode; if not, controlling the uninterruptible power supply to enter a power supply mode; s2, controlling the power consumption module to operate for a first preset time t1Acquiring the power consumption module at the first preset time t1The internal consumption electric quantity delta Q is judged whether to meet the target condition or not according to the delta Q; if so, controlling and adjusting the resistance values of the adjusting resistors on the first circuit and the second circuit; s3, disconnecting the first circuit and controlling the second circuit to be connected; wherein the power storage capacity of the first power supply module is less than the power storage capacity of the second power supply module; wherein the target condition is required to satisfy the following formula 1:
equation 1: a is more than or equal to delta Q is more than or equal to b; wherein,
；
wherein a and b are preset electric quantity values, Ƞ is a power loss coefficient of the uninterruptible power supply in the process of outputting the uninterruptible power supply to the power consumption module, 0.97- Ƞ -0.98, U is the output voltage of the uninterruptible power supply, P is the output voltage of the uninterruptible power supply, andicorresponding the power consumption module to the first preset time t1I is more than or equal to 0 and less than or equal to t1。
Compared with the prior art, the technical scheme has the following technical effects: the method comprises the steps that corresponding power modules are controlled to supply power to the power consumption modules according to actual power consumption conditions of the power consumption modules, namely refined control of the uninterruptible power supply is achieved, specifically, the power consumption modules are divided into high-power consumption modules and low-power consumption modules according to different rated powers of the power consumption modules, so that the power modules with smaller electric quantity can be correspondingly arranged for the low-power consumption modules, and the power modules with larger electric quantity can be correspondingly arranged for the high-power consumption modules, so that refined power supply of the uninterruptible power supply is achieved, further, the power modules with large electric quantity can be matched for the low-power consumption modules, and when the power modules are used for a long time and the service life standard of charging and discharging is not reached, the performance of the power modules is faded due to inevitable internal chemical reaction caused by long-term storage, and energy is wasted; in addition, a power module with small electric quantity is matched with a high-power consumption module, so that the power module is not enough to continuously supply power to the power consumption module within a certain time, other power modules are switched halfway to supply power to the power consumption module due to insufficient internal electric quantity storage, and the output power of the power consumption module is unstable due to unstable power supply caused by switching of the power modules, for example, when the power consumption module is an air conditioner, the unstable power supply can influence the refrigeration and heating efficiency of the power consumption module, even the compressor of the air conditioner is frequently turned on and turned off due to unstable output power of an uninterruptible power supply, and the performance of the compressor is greatly damaged; by combining the technical scheme of the invention, the refined control of different power consumption modules is realized, and the energy waste is reduced, the optimal configuration of the power supply modules is realized and the performance of the uninterrupted power supply is provided by reasonably distributing the power supply modules.
In one example of the present invention, the adjusting resistor provided on the first circuit is a first resistor, and the adjusting resistor provided on the second circuit is a second resistor; the controlling adjusting the resistance values of the adjustment resistances on the first circuit and the second circuit comprises: at a second preset time t2Within a third preset time t3Controlling and adjusting the resistance value of the first resistor, and adjusting the resistance value of the second resistor at the same time; wherein t is more than or equal to 30s2≤60s，2s≤t3≤3s，t2And t3Is a preset value; continuously detecting the current I on the first circuit1While detecting the current I on the second circuit2Judging whether the output power of the power consumption module meets a transition condition at the moment; wherein, the transition condition needs to satisfy formula 2:
equation 2: alpha x Pj≤（I1+I2）2（U2 / Pj）≤β×Pj，0.6≤α≤0.9，1.1≤β≤1.3，0≤j≤t2；
If not, controlling the uninterruptible power supply to execute a system protection program;
wherein, alpha and beta are respectively constants,P jcorresponding the power consumption module to the second preset time t2The actual power at the j-th moment in the range of 0 to t2。
Compared with the prior art, the technical scheme has the following technical effects: in combination with an actual control process, the resistors on the first circuit and the second circuit are adjusted at different time intervals, so that on one hand, in the adjusting process, the output power output to the corresponding power consumption module tends to change smoothly, and the problem that the power consumption module cannot normally operate due to receiving the overlarge output power and even is heated and burned out to cause safety accidents because the output power of the uninterruptible power supply is adjusted to be overlarge in a short time is avoided; on the other hand, the power consumption module can be stably transited between at least two power modules, and the situations that the output power of the uninterruptible power supply is unstable due to the switching of the power modules in the transition process, the power consumption module stops and the like are avoided.
In an example of the present invention, the power consumption module includes an air conditioner and a frequency monitoring module, where the frequency monitoring module is configured to monitor and acquire an operating frequency of the air conditioner; the controlling the uninterruptible power supply to enter a power supply mode comprises: and controlling the frequency monitoring module to periodically monitor the operating frequency f of the air conditioner, and adjusting the output power of the uninterruptible power supply according to the frequency variation delta f of the operating frequency f.
Compared with the prior art, the technical scheme has the following technical effects: in combination with an actual use process, the output power of the uninterruptible power supply is adjusted according to the frequency variation Δ f, so that the problem that the operation efficiency of the air conditioner is reduced, even the compressor of the air conditioner stops operating due to the fact that the output power cannot be adjusted in time because of unstable power supply in a short time when power supply equipment is cut off in a process that the air conditioner is powered by the initial power grid is avoided, and the use experience of a user is reduced is avoided; in addition, the uninterrupted power supply monitors the running frequency f in time and adjusts the output power in time, so that the compressor is prevented from entering a shutdown state, a large amount of electric quantity is consumed in the restarting process, and the cost expenditure of a user is increased.
In an example of the present invention, the adjusting the output power of the uninterruptible power supply according to the frequency variation Δ f of the operating frequency f includes: obtaining the operation frequency f detected by the air conditioner in the T periodTAnd the operating frequency f detected in the T +1 th periodT+1According to said fTAnd f isT+1Obtaining a frequency variation Δ f, wherein Δ f = fT+1-fT(ii) a If c is less than or equal to delta f and less than or equal to d, judging the indoor temperature TiSatisfies a target preset temperature Tp(ii) a Wherein c and d are preset values; if Δ f > d, increaseThe output power of the uninterruptible power supply; wherein c and d are preset frequency values respectively.
Compared with the prior art, the technical scheme has the following technical effects: through right the change degree of the operating frequency f in the adjacent detection cycle of air conditioner has further ensured the air conditioner can normal operating, has especially avoided the air conditioner is when the start-up stage, and operating frequency increases fast and leads to corresponding output can't in time be exported to uninterrupted power source, makes the air conditioner can't reach the settlement temperature fast in the short time, thereby influences the operation utility of air conditioner gives the user relatively poor use experience.
In an example of the present invention, the power consuming module further includes a second home device, and the increasing the output power of the uninterruptible power supply includes: controlling the first circuit and the second circuit to be conducted so as to increase the output power of the uninterruptible power supply; and the second household appliance is connected with the air conditioner in parallel.
Compared with the prior art, the technical scheme has the following technical effects: the influence on the normal power supply of the second household appliance device in the process of increasing the output power of the uninterruptible power supply is avoided.
In an example of the present invention, the determining whether the uninterruptible power supply is in a charging mode includes: if so, controlling the uninterruptible power supply to be disconnected with the power consumption module; and controlling the uninterruptible power supply to continuously receive and charge, judging whether the electric quantity of the uninterruptible power supply meets a rated electric quantity condition, and if so, controlling the uninterruptible power supply to periodically receive and charge.
Compared with the prior art, the technical scheme has the following technical effects: in combination with the practical application condition of the uninterruptible power supply, on one hand, when the power consumption module is supplied with power by a power grid, the uninterruptible power supply is disconnected from the power consumption module, so that the power consumption module can normally operate under the power supply of the power grid, and the situation that the total output power is too large and exceeds the rated power of the power consumption module due to the power supply of the power grid and the uninterruptible power supply, so that the power consumption module is easily damaged due to overheating is avoided; on the other hand, the discharge frequency of the uninterrupted power supply is effectively reduced, and the service life is prolonged.
In another aspect, the present invention further provides a power configuration adjustment apparatus, which can execute the power configuration adjustment method according to any one of the above examples; the power configuration adjustment apparatus includes: the judging module is used for judging whether the uninterruptible power supply is in a charging mode or not; the detection module is used for detecting the electric quantity of the first power supply module and the second power supply module; and the control module controls the first power supply module and/or the second power supply module to supply power to the power consumption module according to the electric quantity.
Compared with the prior art, the technical scheme has the following technical effects: the technical effects corresponding to any one of the above technical solutions can be achieved, and are not described herein again.
In one example of the present invention, includes: and the adjusting module is used for adjusting the output power of the uninterruptible power supply to the power consumption module.
Compared with the prior art, the technical scheme has the following technical effects: the actual use condition of the power configuration adjusting device is combined, the output power of the uninterruptible power supply is effectively adjusted by the adjusting module, so that the output power can adapt to the corresponding power consumption module, and the effect of saving electricity is achieved on the premise that the power consumption module can exert the lowest effect.
In one example of the present invention, the method further comprises: the identification module is used for identifying product identifications of different power consumption modules; the control module is used for controlling the first power supply module and/or the second power supply module to supply power to the power consumption module according to the product identification.
Compared with the prior art, the technical scheme has the following technical effects: in combination with the practical application of the power configuration adjusting device, the product identifier of the corresponding power consumption module can be identified through the identification module, so that the control module can accurately control the corresponding first power supply module and/or the second power supply module to supply power to the power consumption module in a short time, the judgment steps are simplified, and the effect of quick response is realized.
In yet another aspect, the present invention further provides an uninterruptible power supply system that can perform the power configuration adjustment method according to any of the above embodiments; or, a power profile adjustment apparatus as in any of the examples above.
Compared with the prior art, the technical scheme has the following technical effects: the technical effects corresponding to any one of the above technical solutions can be achieved, and are not described herein again.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) the method comprises the steps that corresponding power modules are controlled to supply power to the power consumption modules according to actual power consumption conditions of the power consumption modules, namely refined control of the uninterruptible power supply is achieved, specifically, the power consumption modules are divided into high-power consumption modules and low-power consumption modules according to different rated powers of the power consumption modules, so that the power modules with smaller electric quantity can be correspondingly arranged for the low-power consumption modules, and the power modules with larger electric quantity can be correspondingly arranged for the high-power consumption modules, so that refined power supply of the uninterruptible power supply is achieved, further, the power modules with large electric quantity can be matched for the low-power consumption modules, and when the power modules are used for a long time and the service life standard of charging and discharging is not reached, the performance of the power modules is faded due to inevitable internal chemical reaction caused by long-term storage, and energy is wasted; in addition, a power module with small electric quantity is matched with a high-power consumption module, so that the power module is not enough to continuously supply power to the power consumption module within a certain time, other power modules are switched halfway to supply power to the power consumption module due to insufficient internal electric quantity storage, and the output power of the power consumption module is unstable due to unstable power supply caused by switching of the power modules, for example, when the power consumption module is an air conditioner, the unstable power supply can influence the refrigeration and heating efficiency of the power consumption module, even the compressor of the air conditioner is frequently turned on and turned off due to unstable output power of an uninterruptible power supply, and the performance of the compressor is greatly damaged; by combining the technical scheme of the invention, the refined control of different power consumption modules is realized, and the energy waste is reduced, the optimal configuration of the power supply modules is realized and the performance of the uninterrupted power supply is provided by reasonably distributing the power supply modules;
(2) on one hand, when the power consumption module is supplied with power by a power grid, the uninterrupted power supply is disconnected from the power consumption module, so that the power consumption module can normally operate under the power supply of the power grid, and the situation that the total output power is larger and exceeds the rated power of the power consumption module due to the fact that the power supply of the power grid and the uninterrupted power supply is caused, and the power consumption module is easily damaged due to overheating is avoided; on the other hand, the discharge frequency of the uninterrupted power supply is effectively reduced, and the service life is prolonged.
Drawings
Fig. 1 is a flowchart illustrating a power configuration adjustment method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a circuit connection between an ups and a power consuming module.
Fig. 3 is a schematic diagram of the circuit connection of the ups with the high power consuming device and the low power consuming device.
Fig. 4 is a schematic flow chart of a power allocation adjustment method.
Fig. 5 is a schematic diagram of a second flow of a power allocation adjustment method.
Description of the main element symbols:
100-an uninterruptible power supply; 10-a power grid; 20-a first power supply module; 21-a first resistance; 22-a first circuit; 30-a second power supply module; 31-a second resistance; 32-a second circuit; 40-a power consuming module; 41-high power consuming devices; 42-low power consuming devices.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment is as follows:
referring to fig. 1, a flowchart of a power configuration adjustment method of an uninterruptible power supply 100 according to an embodiment of the present invention is shown. With reference to fig. 2 to fig. 3, wherein the ups 100 is configured to electrically connect a plurality of power consuming modules 40, the ups 100 includes at least one first power module 20 and at least one second power module 30; at least one first circuit 22 and at least one second circuit 32 are connected between each power consumption module 40 and the ups 100, and the first circuit 22 and the second circuit 32 are provided with adjusting resistors; specifically, a first circuit 22 is connected between each power consuming module 40 and each first power module 20, and a second circuit 32 is connected between the power consuming module 40 and the second power module 30; the power configuration adjustment method comprises the following steps:
s1, after the ups 100 is started, determining whether the ups 100 is in a charging mode;
s11, if not, controlling the UPS 100 to enter a power supply mode;
s2, controlling the power consuming module 40 to operate for a first preset time t1Acquiring the power consumption module 40 at the first preset time t1The internal consumed electric quantity delta Q is judged whether to meet the target condition or not according to the electric quantity delta Q;
s21, if yes, controlling and adjusting the resistance of the adjusting resistors on the first circuit 22 and the second circuit 32;
s3, disconnecting the first circuit 22 and controlling the second circuit 32 to connect; wherein, the second power module 30 is enabled to supply power to the corresponding power consuming module 40, and the power storage capacity of the first power module 20 is smaller than that of the second power module 30;
wherein the target condition is required to satisfy the following formula 1:
equation 1: a is more than or equal to delta Q is more than or equal to b; wherein,
that is to say
。
Wherein a and b are preset electric quantity values, Ƞ is the output to the consumption of the UPS 100The power loss coefficient in the process of the electric module 40 is not less than 0.97 and not more than Ƞ and not more than 0.98, U is the output voltage of the UPS 100, PiCorresponding to the first preset time t for the power consumption module 401I is more than or equal to 0 and less than or equal to t1。
In particular, the present invention relates to a method for producing,
for indicating that the power consuming module 40 is at the first preset time t1Considering that a part of the electric energy is converted into heat energy or other energy forms during the process of the current flowing through the circuit of the ups 100, that is, only a great part of the electric energy is utilized by the power consumption module 40, the consumed electric energy is corrected by the power loss coefficient, and the parameter value is combined to make the first preset time t be the first preset time t1The power consumption of the ups 100 is approximately equal to
Wherein, in a further aspect,
for indicating that the power consuming module 40 is at the first preset time t1The accumulated consumed power in the system, namely the consumed electric energy.
In particular, the method comprises the following steps of,
for indicating that the power consuming module 40 is at the first preset time t1The cumulative amount of current consumed.
In a specific embodiment, for example, with reference to fig. 2 to fig. 3, the power grid 10 is in a power-off state, so that the ups 100 can be controlled to switch from the charging mode to the power-supplying mode, and in order to enable the ups 100 to continuously supply power to the power consuming module 40 for as long as possible, then, by using the content of the above formula 1, the type of the power consuming module 40 can be accurately determined to be the high-power consuming device 41 or the low-power consuming device 42 according to the power consumption of the power consuming module 40 during a period of operation, and then the corresponding power module is controlled to supply power thereto. For example, when the power consumption module 40 is a high power consumption device 41, the second power module 30 is controlled to supply power to the power consumption module, so on the one hand, when the high power consumption device 41 is electrically connected to the first power module 20 with smaller reserved power, it is avoided that long-time continuous and stable power supply cannot be realized, and it should be noted that, when the power supply module is switched to supply power to the power consumption module 40, on the other hand, unstable power supply may be caused, so that the power consumption module 40 cannot stably output power, for example, when the power consumption module 40 is an air conditioner, that is, the air conditioner is the high power consumption device 41, when the power supply module is switched, the compressor of the air conditioner may be operated unstably, for example, in a cooling mode, low-temperature cold air blown out is converted into high-temperature warm air, so that the user experience is affected, and even the compressor may be suddenly shut down, that is, stopped in an abnormal state, easily cause damage to the internal equipment thereof.
Then, in combination with the above technical solution of the present invention, the power consumption module 40 is configured to be operated for the first preset time t1The power consumption in the uninterruptible power supply 100 is classified into high-power consuming equipment and low-power consuming equipment, so that stable output power supply of the uninterruptible power supply 100 can be realized, and the power consuming module 40 can stably run for as long as possible.
In addition, when the power consumption module 40 is a low-power consumption device 42, for example, an illumination lamp, it can be electrically connected to the first power supply module 20 having a small power storage amount. Although it is considered that the illumination lamp is electrically connected to the second power module 30 having a large amount of stored electricity to achieve a stable output power continuously for a long period of time. However, it should be noted that, after the first power module 20 or the second power module 30 is produced, the maximum internal power storage capacity is continuously reduced with the passage of time, and thus, when the lighting lamp is electrically connected to the second power module 30, although the charging and discharging usage times of the second power module 30 still do not reach the service life, due to long-term use, the power storage performance is greatly reduced, that is, energy is wasted. That is, the effective utilization of the illumination lamp by the second power module 30 is less than the effective utilization of the first power module 20. In other words, in the case of one complete discharge, the utilization rate of the power supply module gradually decreases as the usage time becomes longer, that is, although the illumination lamp is electrically connected to the second power supply module 30 for a longer duration than the first power supply module 20 in the case of one complete discharge, the energy inefficiency loss is relatively larger than that in the case of the first power supply module 20. Therefore, considering the overall cost, the low-power consumption device 42 is electrically connected to the first power supply module 20, which can improve the effective utilization rate of the power supply module; on the other hand, more second power modules 30 can be used to electrically connect the high power consuming devices 41 to maximize the utility of the ups 100.
Referring to fig. 5, it is preferable that the adjusting resistor provided in the first circuit 22 is a first resistor 21, and the adjusting resistor provided in the second circuit 32 is a second resistor 31; controlling the resistance values of the tuning resistors on the first circuit 22 and the second circuit 32 includes:
s211, in a second preset time t2Within a third preset time t3Controlling and adjusting the resistance value of the first resistor 21 and adjusting the resistance value of the second resistor 31; wherein t is more than or equal to 30s2≤60s，2s≤t3≤3s，t2And t3Is a preset value;
s212, continuously detecting the current I on the first circuit 221While simultaneously sensing the current I on the second circuit 322Judging whether the output power of the power consumption module 40 at this time meets a transition condition; wherein, the transition condition needs to satisfy formula 2:
equation 2: alpha x Pj≤（I1+I2）2（U2/Pj）≤β×Pj，0.6≤α≤0.9，1.1≤β≤1.3，0≤j≤t2；
Wherein, alpha and beta are respectively constants,P jcorresponding the power consumption module to the second preset time t2The actual power at the j-th moment in the range of 0 to t2。
In one embodiment, for example, the power consumption module 40 is a high power consumption device, and if the power consumption module 40 is electrically connected to the first power module 20, then, in order to make the high power consumption device 41 be stably connected to the second power module 30 for electrical connection, the resistance value of the second resistor 31 on the second circuit 32 can be adjusted to be the maximum, and then the second power module 30 is connected to the high power consumption device through the second circuit 32, at this time, the high power consumption device is simultaneously connected to the first power module 20 and the second power module 30, since the resistance value of the second resistor 31 on the second power module 30 is the maximum, the connection can be approximately regarded as being disconnected, that is, approximately regarded as no current flowing into the high power consumption device 41, and in addition, the situation that the received current of the high power device 41 is too large due to the too large current on the second circuit 32 is also avoided, and burn out the internal parts. In particular, for example, the resistance of the first resistor 21 may be continuously adjusted to reduce I received by the high power consuming device1While avoiding the cause of I1Reducing the power P which causes input to the high power consumer 411Too small to affect its normal operation, and then the second resistor 31 of the second circuit 32 is adjusted at the same time, so that the resistance of the second resistor 31 is gradually reduced, i.e. so that I2Gradually increases so that the power P input to the high power consuming device 412The total power input to the power consuming device is gradually increased to maintain the lowest operable power level, that is, the total power of the power consuming module 40 is ensured to fluctuate within a normal range in the transition stage of the power module conversion process until the first circuit 22 is disconnected from the power consuming module 40, which means that the transition of the power module is completed.
It should be noted that, at the second preset time t2Inner, PjRepresenting the actual power of the power consuming module 40 at the j-th instant, then (I)1+I2）2（U2 / Pj) Representing the actual consumed power of the power consuming module 40 at the time instant j.
By equation 2: alpha x Pj≤（I1+I2）2（U2 / Pj）≤β×Pj，0.6≤α≤0.9，1.1≤β≤1.3，0≤j≤t2So that the power consuming module 40 can still maintain operation during the process of adjusting the first resistor 21 and the second resistor 31, wherein α × PjFor the lowest frequency, β × P, at which the power consuming module 40 can maintain operationjThe maximum frequency of operation can be maintained for the power consuming module 40.
S213, if not, controlling the ups 100 to execute the system protection program. Specifically, when the actual power of the power consuming module 40 is less than α × PjThe power consumption module 40 can not operate normally, such as stop operation, and the actual power is greater than β × PjThe power consuming module 40 may be damaged due to overheating caused by the receiving of the ups 100 with too much power, i.e. overload. Thus, especially when the actual power is greater than β × PjAnd the duration time exceeds a third preset time t3In this case, it is necessary to control the ups 100 to execute a system protection program, for example, to disconnect the ups 100 from the power consuming modules 40, so as to prevent the power consuming modules 40 from being damaged due to overheating, and certainly, the ups 100 can enter an emergency shutdown state, so as to prevent at least one of the power modules from being failed due to the coupling connection between the first power module 20 and the second power module 30, which may affect other power modules, and even damage the internal structures of other power consuming modules 40.
With reference to fig. 4, preferably, the power consumption module 40 includes an air conditioner and a frequency monitoring module, where the frequency monitoring module is configured to monitor and obtain an operating frequency of the air conditioner; controlling the ups 100 to enter the power mode includes:
s111, acquiring the operating frequency f of the air conditioner;
and S112, controlling the frequency monitoring module to periodically monitor the operating frequency f of the air conditioner, and adjusting the output power of the uninterruptible power supply 100 according to the frequency variation delta f of the operating frequency f.
Preferably, the adjusting the output power of the uninterruptible power supply 100 according to the frequency variation Δ f of the operating frequency f includes:
s113, acquiring the operation frequency f detected by the air conditioner in the T periodTAnd the operating frequency f detected in the T +1 th periodT+1According to said fTAnd f isT+1Obtaining a frequency variation Δ f, wherein Δ f = fT+1-fT；
If c is less than or equal to delta f and less than or equal to d, judging the indoor temperature TiSatisfies a target preset temperature TpControlling the output power of the uninterruptible power supply 100 to keep stable output; wherein c and d are preset frequency values;
if Δ f > d, the output power of the ups 100 is increased.
In a specific embodiment, the air conditioner is, for example, an inverter air conditioner, so that during the process of the uninterruptible power supply 100 changing from the charging mode to the power supply mode, a transient power supply shortage may exist, and correspondingly, the operating frequency of the inverter air conditioner may decrease continuously, so that the operating frequency f may be periodically monitored, the frequency variation Δ f of the operating frequency f within the connection time may be obtained, and the output power of the uninterruptible power supply 100 may be adjusted in time according to the variation of Δ f, so that the inverter air conditioner may be recovered to the normal operating state within a short time.
Specifically, inverter air conditioner is starting the operation stage, in order to make can reach the target preset temperature with indoor ambient temperature in the short time, common regulation means often can increase the operating frequency to the operation rotational speed of the compressor of increase air conditioner for indoor and outdoor heat exchange efficiency makes people can feel comfortable in the short time. However, the load pressure of the uninterruptible power supply 100 is increased, and therefore, in order to enable the inverter air conditioner to achieve the above-mentioned high-efficiency heat exchange efficiency, the uninterruptible power supply 100 needs to adjust and increase the output power in time to achieve the heat exchange efficiency of the inverter air conditioner in the start-up operation stage. In combination with practical conditions, the interval time between the Tth period and the T +1 th period is preferably 2 seconds, c is preferably 2Hz, and d is preferably 3 Hz. Therefore, when delta f is more than or equal to 2Hz and less than or equal to 3Hz, the variable frequency air conditioner can be judged to enter the normal operation stage from the starting operation stage at the moment, namely, the indoor operation stage at the momentTemperature TiSatisfies a target preset temperature TpTherefore, the operation frequency of the compressor at this stage changes smoothly, so that only the output power of the ups 100 needs to be controlled to keep stable output, for example, the output power is kept unchanged to meet the requirement of the inverter air conditioner for the output frequency at this normal operation stage, of course, the output power can be kept stable output, that is, the ups 100 can be finely adjusted according to the fine adjustment of the operation frequency of the inverter air conditioner, so as to better adapt to the inverter air conditioner to exert the effect, and the ups 100 can perform the fine control effect on the inverter air conditioner, so that the output power is optimized to prolong the power supply time.
Specifically, when the indoor temperature T is at this timeiSatisfies a target preset temperature TpWhen the compressor is, for example, maintained at 20Hz, when TiDeviation TpAt this time, the operating frequency of the compressor is increased to increase the heat exchange efficiency between the indoor and outdoor, that is, Ti is returned to satisfy T againpWithin a threshold range. It is to be noted that at this stage the adjustment of the operating frequency of the compressor is a fine adjustment to further reduce the increase in energy consumption of the compressor due to excessive variations in the operating frequency. That is, in order to enable the ups 100 to continuously supply power to the air conditioner for as long as possible, in other words, to enable the second power module 30 to continuously supply power to the air conditioner, it is necessary to adjust the output frequency of the ups 100 to control the air conditioner to operate at a lower frequency during operation.
For example, when the power grid 10 supplies power to the air conditioner, the air conditioner can be arbitrarily controlled within a self-controllable frequency range, for example, the frequency of the air conditioner is adjusted within a range from 0Hz to 60Hz, and in order to increase the heat exchange efficiency between the indoor and the outdoor, the frequency can be increased to a high-order frequency above 50Hz, for example, the air conditioner operates in a cooling mode, so that the indoor temperature can be maintained at 15 ℃ when the air conditioner operates at 50Hz, and similarly, the power consumption of the air conditioner is also large at this time. In order to operate the air conditioner for a long time in the power supply mode of the ups 100, the output power of the ups 100 is adjusted to be reduced such that the maximum operating frequency of the air conditioner is lower than the maximum frequency of the power supplied by the power grid 10, for example, the maximum operating frequency of the air conditioner is 40Hz, and accordingly, the indoor temperature is maintained at 20 ℃ at the lowest. The maximum operation frequency of the air conditioner is reduced, so that the air conditioner can be kept to operate for a long time under a lower frequency, refined control of the uninterruptible power supply 100 is achieved, stable power supply can be provided for various power consumption modules 40 with different power consumption, such as the air conditioner, and the like, a user can maintain power supply by utilizing the uninterruptible power supply 100 for a long time and perform refined control according to different power consumption capacities of the various power consumption modules 40, waste of electric energy is reduced, the electric energy is saved, and cost is saved.
Preferably, the power consumption module 40 further includes a second household appliance, and the increasing the output power of the uninterruptible power supply 100 includes:
controlling the air conditioner and the uninterruptible power supply 100 to be conducted through the first circuit 22 and the second circuit 32 to increase the output power of the uninterruptible power supply 100;
and the second household appliance is connected with the air conditioner in parallel.
Preferably, the determining whether the uninterruptible power supply 100 is in the charging mode includes:
s12, if yes, controlling the ups 100 to be disconnected from the power consuming module 40;
and S13, controlling the UPS 100 to continuously receive charging, judging whether the electric quantity of the UPS 100 meets the rated electric quantity condition, and if so, controlling the UPS 100 to periodically receive charging.
Example two:
the embodiment of the invention provides a function configuration adjusting device. Specifically, the power configuration adjusting apparatus executes the power configuration adjusting method provided in the first embodiment, and the power configuration adjusting apparatus includes, for example, a determining module, a detecting module, and a controlling module. The judging module is configured to judge whether the uninterruptible power supply 100 is in a charging mode; the detection module is used for detecting the electric quantity of the first power supply module 20 and the second power supply module 30; the control module may control the first power module 20 and/or the second power module 30 to supply power to the power consuming module 40 according to the amount of power.
Preferably, the power configuration adjusting device further includes, for example, an adjusting module, and the adjusting module is used for adjusting the output power of the uninterruptible power supply 100 to the power consuming module 40.
Preferably, the power configuration adjustment device further comprises, for example, an identification module for identifying the product identification of the different power consuming modules 40. The control module may be configured to control the first power module 20 and/or the second power module 30 to supply power to the power consuming module 40 according to the product identifier.
Example three:
the present invention further provides an uninterruptible power supply system, and in particular, the uninterruptible power supply system can perform the power configuration adjustment method according to the first embodiment; alternatively, the uninterruptible power supply system includes, for example, the power configuration adjustment device as described in embodiment two above. Accordingly, this embodiment can achieve the technical effect of any technical solution corresponding to the first embodiment, or can achieve the technical effect of any technical solution corresponding to the second embodiment, and details are not repeated here.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The method for adjusting the power configuration of the uninterruptible power supply is characterized in that the uninterruptible power supply is electrically connected with a plurality of power consumption modules and comprises at least one first power supply module and at least one second power supply module;
a first circuit is connected between each power consumption module and each first power supply module, and a second circuit is connected between each power consumption module and the second power supply module, wherein the first circuit and the second circuit are respectively provided with an adjusting resistor;
the power configuration adjustment method comprises the following steps:
s1, after the UPS is started, judging whether the UPS is in a charging mode;
if not, controlling the uninterruptible power supply to enter a power supply mode;
s2, controlling the power consumption module to operate for a first preset time t1Acquiring the power consumption module at the first preset time t1The internal consumption electric quantity delta Q is used for judging whether the delta Q meets a target condition;
if yes, controlling and adjusting the resistance values of the adjusting resistors on the first circuit and the second circuit; wherein, locate on the first circuit adjust the resistance for first resistance, locate on the second circuit adjust the resistance for the second resistance, the control adjusts first circuit with on the second circuit adjust the resistance value of resistance include: at a second preset time t2Within a third preset time t3Controlling and adjusting the resistance value of the first resistor, and adjusting the resistance value of the second resistor at the same time; wherein t is more than or equal to 30s2≤60s，2s≤t3≤3s；
Continuously detecting the current I on the first circuit1While detecting the current I on the second circuit2Judging whether the output power of the power consumption module meets a transition condition at the moment; wherein, the transition condition needs to satisfy formula 2:
equation 2: alpha x Pj≤（I1+I2）2（U2 / Pj）≤β×Pj，0.6≤α≤0.9，1.1≤β≤1.3，0≤j≤t2；
If not, controlling the uninterruptible power supply to execute a system protection program;
wherein, alpha and beta are respectively constants,P jcorresponding the power consumption module to the second preset time t2The actual power at the j-th moment in the range of 0 to t2；
S3, disconnecting the first circuit and controlling the second circuit to be connected; wherein the power storage capacity of the first power supply module is less than the power storage capacity of the second power supply module;
wherein the target condition is required to satisfy the following formula 1:
equation 1: a is more than or equal to delta Q is more than or equal to b; wherein,
；
wherein, a and b are preset electric quantity values, Ƞ is a power loss coefficient of the uninterruptible power supply in the process of outputting to the power consumption module, U is the output voltage of the uninterruptible power supply, and P isiCorresponding the power consumption module to the first preset time t1I is more than or equal to 0 and less than or equal to t1。
2. The power configuration adjustment method according to claim 1, wherein the power consumption module comprises an air conditioner and a frequency monitoring module, and the frequency monitoring module is configured to monitor and obtain an operating frequency of the air conditioner; the controlling the uninterruptible power supply to enter a power supply mode comprises:
and controlling the frequency monitoring module to periodically monitor the operating frequency f of the air conditioner, and adjusting the output power of the uninterruptible power supply according to the frequency variation delta f of the operating frequency f.
3. The power configuration adjustment method according to claim 2, wherein the adjusting the output power of the uninterruptible power supply according to the frequency variation Δ f of the operating frequency f comprises:
obtaining the operation frequency f detected by the air conditioner in the T periodTAnd the operating frequency f detected in the T +1 th periodT+1According to said fTAnd f isT+1Obtaining the frequency variation Δ f, wherein Δ f = fT+1-fT；
If c is less than or equal to delta f and less than or equal to d, judging that the indoor temperature Ti meets the target preset temperature TpControlling the output power of the uninterruptible power supply to keep stable output;
if delta f is larger than d, increasing the output power of the uninterruptible power supply;
wherein c and d are preset frequency values respectively.
4. The power configuration adjustment method of claim 3, the power consuming module further comprising a second home device; wherein increasing the output power of the uninterruptible power supply comprises:
controlling the first circuit and the second circuit to be conducted so as to increase the output power of the uninterruptible power supply;
and the second household appliance is connected with the air conditioner in parallel.
5. The power configuration adjustment method according to any one of claims 1-4, wherein the determining whether the uninterruptible power supply is in a charging mode comprises:
if so, controlling the uninterruptible power supply to be disconnected with the power consumption module;
and controlling the uninterruptible power supply to continuously receive and charge, judging whether the electric quantity of the uninterruptible power supply meets a rated electric quantity condition, and if so, controlling the uninterruptible power supply to periodically receive and charge.
6. A power allocation adjustment device, characterized in that,
performing the power configuration adjustment method of any of claims 1-5; the power configuration adjustment apparatus includes:
the judging module is used for judging whether the uninterruptible power supply is in a charging mode or not;
the detection module is used for detecting the electric quantity of the first power supply module and the second power supply module;
and the control module controls the first power supply module and/or the second power supply module to supply power to the power consumption module according to the electric quantity.
7. The power configuration adjustment device according to claim 6, further comprising:
and the adjusting module is used for adjusting the output power of the uninterruptible power supply to the power consumption module.
8. The power configuration adjustment device according to claim 7, further comprising:
the identification module is used for identifying product identifications of different power consumption modules;
the control module is used for controlling the first power supply module and/or the second power supply module to supply power to the power consumption module according to the product identification.
9. An uninterruptible power supply system is characterized in that,
performing the power configuration adjustment method of any of claims 1-5;
or, comprising a power configuration adjustment device according to any of claims 6-8.
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