CN105226810A - Many ups systems power supply synchronization system and method - Google Patents
Many ups systems power supply synchronization system and method Download PDFInfo
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- CN105226810A CN105226810A CN201510657061.XA CN201510657061A CN105226810A CN 105226810 A CN105226810 A CN 105226810A CN 201510657061 A CN201510657061 A CN 201510657061A CN 105226810 A CN105226810 A CN 105226810A
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Abstract
The invention provides a kind of many ups systems power supply synchronization system and method, described system comprises N number of ups system, described N be more than or equal to 2 integer; Described N number of ups system is connected by LBS cable, and wherein LBS cable comprises synchronous bus and competition bus; Ups system described in each comprises characteristic pulse transmitting element, signal processing unit and synchronizing signal transmitting element, wherein: described characteristic pulse transmitting element, sends characteristic pulse for the competition bus to described LBS cable; Described detecting signal unit, for judging LBS master synchronizer according to the synchronous bus of LBS cable and the signal of competition bus; Described synchronizing signal transmitting element, sends synchronizing signal for the synchronous bus to LBS cable.The present invention by increasing competition bus in traditional LBS cable, and the output that conveniently can realize multiple ups system is synchronous.
Description
Technical field
The present invention relates to uninterrupted power supply for electrical domain, more particularly, relate to a kind of many ups systems power supply synchronization system and method.
Background technology
Along with the progress of information technology develop rapidly and power electronic technology, people recognize the importance of ups system in protected data day by day, and therefore ups system is more and more extensive in the application in the fields such as industry, communication, aerospace, military project and family life.
Ups system, in the process of long-time running, still can have the risk of power down, and such as ups system input source power down turns powered battery and after battery discharge to EOD, and load will power down; Itself there is fault in ups system, ups system also can be caused to transfer bypass power supply to, and ups system is commonly considered as insecure at bypass power supply, there is power down risk.
Therefore in some very important occasions; in order to further reduce the risk of device looses power; improve reliability when ups system runs; usually two cover ups system composition double-bus electric power system supplying power for outsides can be adopted; or be greater than the mode supplying power for outside of two cover ups system composition ELBS electric power systems; the out-put supply of Bing Dang mono-road ups system does not meet load supplying when requiring; load is cut toward another road ups system by load selector switch (as STS) automatically, thus proof load power uninterrupted.
As shown in Figure 1, be the schematic diagram of the ups system adopting LBS structure.First ups system 11 and the second ups system 12 are connected to load via same load selector switch 13 respectively, and by LBS line synchronous signal transmission between this first ups system 11 and second ups system 12, synchronous with what realize between the first ups system 11 and the second ups system 12, ensure when being switched by load selector switch, little as far as possible to the impact of load, break time is short as far as possible.But the out-put supply that the system of above-mentioned LBS structure is merely able to realize between two cover ups systems is synchronous.
As shown in Figure 2, be the schematic diagram of the ups system of ELBS structure, in this structure multiple ups system between two after load selector switch to load supplying, thus realize the reliable power supply of multiple ups system to load.In the system of said structure, by LBS line synchronous signal transmission between each ups system, and have a fixing ups system in multiple ups system as master synchronizer, other ups system be that conduct is from synchronizer.The ups system as master synchronizer is followed the tracks of as the ups system from synchronizer.But in this structure, owing to can only arrange a fixing ups system as master synchronizer, the phase place of other ups system all follows the tracks of this ups system as master synchronizer, once master synchronizer fault, then cannot keep synchronous between other ups system, thus cannot recomposition LBS powering mode.As in Fig. 2, once as the 3rd ups system 23 fault of master synchronizer, then the first ups system 21 and the second ups system 22 cannot be synchronous, thus load selector switch 26 is when carrying out load and switching, can greater risk be there is, greatly reduce the practicality of ups system.
Summary of the invention
The technical problem to be solved in the present invention is, for the problem that above-mentioned ups system synchronous tracking system practicality is poor, provides a kind of many ups systems power supply synchronization system and method.
The technical scheme that the present invention solves the problems of the technologies described above is, provides a kind of power supply synchronization system of many ups systems, comprises N number of ups system and this N number of ups system is connected by LBS cable, described N be more than or equal to 2 integer; Described LBS cable comprises synchronous bus and competition bus, and described N number of ups system realizes synchronous transmission of signal by synchronous bus;
Ups system described in each comprises characteristic pulse transmitting element, detecting signal unit and synchronizing signal transmitting element, wherein:
Described characteristic pulse transmitting element, for sending characteristic pulse to described competition bus, and the width of characteristic pulse that the characteristic pulse transmitting element of described multiple ups system sends to competition bus is different;
According to the signal detected, described detecting signal unit, for the signal of the competition bus and synchronous bus that detect LBS cable, and judges whether place ups system is master synchronizer;
Described synchronizing signal transmitting element, for sending synchronizing signal when this ups system is master synchronizer to synchronous bus.
In many ups systems power supply synchronization system of the present invention, described characteristic pulse transmitting element only just sends characteristic pulse to competition bus when place ups system is load supplying.
In many ups systems power supply synchronization system of the present invention, in this power supply synchronization system, the pulsewidth of the characteristic pulse that the described characteristic pulse transmitting element of each ups system sends is different, described detecting signal unit meets to competition bus transmission characteristic pulse condition at this ups system, and the width of characteristic pulse in competition bus is when being less than or equal to the feature pulsewidth that this ups system sends, confirm that this ups system is master synchronizer.
In many ups systems power supply synchronization system of the present invention, the numbering of described N number of ups system is respectively 1,2 ..., N-2, N-1, N, and the width of the characteristic pulse of the characteristic pulse transmitting element of each ups system transmission meets the following conditions: T_1>T_2+T_3 ... + T_n, T_2>T_3 ... + T_n, T_n-2>T_n-1+T_n, T_n-1>T_n;
Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 1 sends, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 2 sends, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N sends, T_n-2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N-2 sends, and T_n-1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N-1 sends.
In many ups systems power supply synchronization system of the present invention, the width of the characteristic pulse that the characteristic pulse transmitting element of ups system described in each sends when place ups system is bypass power supply from this place ups system be inversion power time the width of characteristic pulse that sends different; The numbering of described N number of ups system is respectively 1,2 ..., N-2, N-1, N, and the width of the characteristic pulse of the characteristic pulse transmitting element of each ups system transmission meets the following conditions: T_1>T_2+T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_2>T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_n+n-2>T_n+n-1+T_n+n, T_n+n-1>T_n+n;
Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 1 sends when place ups system is in bypass power supply, T_n+1 is that the characteristic pulse transmitting element of the ups system being numbered 1 is at place ups system the width of characteristic pulse sent when inversion is powered, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 2 sends when place ups system is in bypass power supply, T_n+2 is that the characteristic pulse transmitting element of the ups system being numbered 2 is at place ups system the width of characteristic pulse sent when inversion is powered, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N sends when place ups system is in bypass power supply, T_n+n is that the characteristic pulse transmitting element of the ups system being numbered N is at place ups system the width of characteristic pulse sent when inversion is powered, T_n+n-2 is that the characteristic pulse transmitting element of the ups system being numbered N-2 is at place ups system the width of characteristic pulse sent when inversion is powered, T_n+n-1 is that the characteristic pulse transmitting element of the ups system being numbered N-1 is at place ups system the width of characteristic pulse sent when inversion is powered.
In many ups systems power supply synchronization system of the present invention, described synchronizing signal transmitting element, when ups system is in different powering mode, sends synchronizing signal type to synchronous bus different; When the synchronizing signal type of described detecting signal unit only on synchronous bus is different from the powering mode of place ups system, confirm that place ups system is master synchronizer.
The present invention also provides a kind of many ups systems power supply synchronization method, for realizing the power supply synchronization of N number of ups system and this N number of ups system is connected by LBS cable, described N be more than or equal to 2 integer, described LBS cable comprises synchronous bus and competition bus, and each ups system performs following steps:
A () current ups system detects the competition bus of LBS cable and the signal of synchronous bus, described signal comprises by the one or more characteristic pulses sent respectively to competition bus in N number of ups system, and the width of the characteristic pulse of each ups system transmission is different;
B according to the signal detected, () judges whether place ups system is master synchronizer, if master synchronizer then performs step (c), otherwise perform step (d);
C () current ups system sends synchronizing signal to synchronous bus;
D () current ups system follows the tracks of the synchronizing signal in synchronous bus.
In many ups systems power supply synchronization method of the present invention, in described step (b), described current ups system, when this ups system sends characteristic pulse in competition bus and the width of characteristic pulse in competition bus is less than or equal to the width of the characteristic pulse that current ups system sends, confirms that current ups system is master synchronizer.
In many ups systems power supply synchronization method of the present invention, in described step (c), when ups system is in different powering mode, send synchronizing signal type to synchronous bus different; When synchronizing signal type in described step (b) only on synchronous bus is different from the powering mode of place ups system, confirm that place ups system is master synchronizer.
In many ups systems power supply synchronization method of the present invention, the powering mode of described ups system comprises bypass mode or inverter mode; Described current ups system only just sends characteristic pulse to described competition bus when bypass mode or inverter mode are powered.
Many ups systems power supply synchronization system and method for the present invention, by increasing competition bus between different ups system, making each ups system all can be used as master synchronizer and sending synchronizing signal to synchronous bus, synchronous with the phase angle realizing each ups system.The present invention can avoid in many ups systems electric power system of existing fixing master synchronizer, master synchronizer fault and cause the problem that all ups systems cannot be synchronous, improves the reliability of system power supply.
Accompanying drawing explanation
Fig. 1 is the topology diagram of the ups system electric power system of existing LBS structure.
Fig. 2 is the topology diagram of the ups system electric power system of existing ELBS structure.
Fig. 3 is the schematic diagram of the present invention's many ups systems power supply synchronization system embodiment.
Fig. 4 is the structural representation of ups system in Fig. 3.
Fig. 5 is the schematic flow sheet of the present invention's many ups systems power supply synchronization method first embodiment.
Fig. 6 is the schematic flow sheet of the present invention's many ups systems power supply synchronization method second embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 3,4, be the schematic diagram of the present invention's many ups systems power supply synchronization system embodiment.Many ups systems power supply synchronization system in the present embodiment comprise N number of ups system 31 (N be more than or equal to 2 integer, illustrate only three in Fig. 3) and this N number of ups system 31 connected by LBS cable, wherein LBS cable comprises synchronous bus 34 and competition bus 35.Similar with the ups system electric power system of existing ELBS structure, this N number of ups system 31 realizes synchronizing signal (i.e. LBS lock-out pulse) transmission by synchronous bus 34 (i.e. LBS cable) and two adjacent ups systems 31 are connected to a load 33 via same load selector switch 32.Each ups system 31 above-mentioned can be loose pattern block, can also by the set of multiple UPS monomer module composition.
In above-mentioned N number of ups system 31, fixing master synchronizer is not set, but makes each ups system 31 all can become master synchronizer by increasing competition bus 35 in LBS cable, send synchronizing signal to other ups systems 31.This competition bus 35 can adopt single cable, also can adopt two cables, thus reduce interference in a differential manner.
Particularly, N number of ups system 31 is connected into ring topology by competition bus 35, and each ups system 31 comprises characteristic pulse transmitting element 311, detecting signal unit 312 and synchronizing signal transmitting element 313.Above-mentioned characteristic pulse transmitting element 311, detecting signal unit 312 and synchronizing signal transmitting element 313 specifically can in conjunction with the software sharing being integrated into ups system 31.
Characteristic pulse transmitting element 311 is for sending characteristic pulse to competition bus 35, and the width of the characteristic pulse of the characteristic pulse transmitting element 311 of multiple ups system 31 transmission is different.According to the signal detected, detecting signal unit 312 for detecting the characteristic pulse signal in the competition bus of LBS cable and the synchronizing signal in synchronous bus, and judges whether place ups system 31 is master synchronizer.Synchronizing signal transmitting element 313 is for sending synchronizing signal when confirming that place ups system 31 is master synchronizer to synchronous bus 34, and make other ups systems all follow the tracks of this synchronizing signal, the phase angle realizing each ups system is synchronous.
In above-mentioned many ups systems power supply synchronization system, without the need to a certain ups system 31 is set to master synchronizer (LBS main frame), each ups system 31 competes out master synchronizer according to the running status of system automatically.Once as ups system 31 fault of master synchronizer, then remain ups system 31 and can compete out a new master synchronizer at once, to ensure that the master synchronizer moment in many ups systems power supply synchronization system exists, thus the synchronous of N number of ups system 31 can both be realized at any time, guarantee fail safe when load selector switch (STS) 32 switches.
For avoiding the characteristic information in competition bus 35 too much, characteristic pulse transmitting element 311, only when the ups system 31 at its place powers (namely bypass power supply or inversion are powered) for corresponding load 33, just sends corresponding characteristic pulse (namely meeting the condition sending characteristic pulse to competition bus 35) in competition bus 35.After the detecting signal unit 312 of other ups systems 31 receives characteristic information, through arbitration, determine master synchronizer.
Especially, above-mentioned detecting signal unit 312 meets the condition sending characteristic pulse to competition bus 35 at this ups system, and during the width of the characteristic pulse that sends of the characteristic pulse transmitting element 311 that the width of characteristic pulse in competition bus 35 is less than or equal to place ups system 31, confirm that place ups system 31 is master synchronizer.Namely, in the ups system 31 of all normal operations, a maximum ups system 31 of the width of characteristic pulse is sent as master synchronizer.
Above-mentioned N number of ups system 31 can be numbered 1 respectively, 2 ..., N-2, N-1, N (if same ups system 31 is by multiple monomer module composition, then the plurality of monomer module has an identical numbering).Superpose for avoiding characteristic information (such as characteristic pulse) and can not differentiate, the width of the characteristic pulse of characteristic pulse transmitting element 311 transmission of each ups system 31 meets the following conditions: T_1>T_2+T_3 ... + T_n, T_2>T_3 ... + T_n, T_n-2>T_n-1+T_n, T_n-1>T_n; Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 1 sends, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 2 sends, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N sends, T_n-2 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N-2 sends, and T_n-1 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N-1 sends.
Each ups system 31 above-mentioned also preferentially can follow the tracks of bypass source, now the characteristic pulse transmitting element 311 of each ups system 31 can send characteristic pulse according to the power supply state of place ups system 31, namely place ups system 31 for the width of characteristic pulse that sends during bypass power supply from this place ups system 31 for the width of the characteristic pulse sent when inversion is powered is different.Particularly, when the numbering of N number of ups system 31 be respectively 1,2 ..., N-2, N-1, N time, the width of the characteristic pulse of characteristic pulse transmitting element 311 transmission of each ups system 31 meets the following conditions: T_1>T_2+T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_2>T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_n+n-2>T_n+n-1+T_n+n, T_n+n-1>T_n+n;
Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 1 sends when place ups system 31 is in bypass power supply, T_n+1 is that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 1 is at place ups system 31 width of characteristic pulse sent when inversion is powered, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 2 sends when place ups system 31 is in bypass power supply, T_n+2 is that the characteristic pulse transmitting element 311 of the ups system 31 being numbered 2 is at place ups system 31 width of characteristic pulse sent when inversion is powered, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N sends when place ups system 31 is in bypass power supply, T_n+n is that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N is at place ups system 31 width of characteristic pulse sent when inversion is powered, T_n+n-2 is that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N-2 is at place ups system 31 width of characteristic pulse sent when inversion is powered, T_n+n-1 is that the characteristic pulse transmitting element 311 of the ups system 31 being numbered N-1 is at place ups system 31 width of characteristic pulse sent when inversion is powered.
Further, in order to avoid the frequent switching of master synchronizer, the synchronous signal impulse as the ups system 31 of master synchronizer can be made to be divided into two kinds of different width type, add the rule of competition: if after master synchronizer competition being come according to the width of characteristic pulse simultaneously, the pulse width type of the synchronizing signal that the pulse duration of synchronizing signal that this ups system 31 sends sends with a upper master synchronizer is the same, then think that the competition of this main frame is invalid, should avoid.Namely as the synchronizing signal transmitting element 313 of the ups system 31 of master synchronizer, when the ups system 31 at place is in different powering mode, synchronizing signal type is sent different to synchronous bus 34, and the synchronizing signal type of the detecting signal unit 312 of other ups systems 31 only on synchronous bus 31 different from the powering mode of its place ups system 31 time, just confirm that place ups system 31 is for master synchronizer (characteristic pulse meets master synchronizer condition).
Such as, definable when the ups system 31 as master synchronizer synchronizing signal transmitting element 313 ups system 31 at bypass power supply time, send LBS wide lock-out pulse; When inversion is powered, send the narrow lock-out pulse of LBS.If it is wide lock-out pulse that a certain ups system 31 detects on synchronous bus 34, even if the characteristic pulse pulse duration that the characteristic pulse transmitting element 311 of the machine will send is greater than the characteristic pulse pulse duration of current master synchronizer, the characteristic pulse transmitting element 311 of the machine also can not send characteristic pulse, after avoiding occurring that the competition of master synchronizer identity is come by the machine, still on synchronous bus 34, send wide lock-out pulse.
As shown in Figure 5, it is the schematic diagram of the present invention's many ups systems power supply synchronization method first embodiment, the method is for realizing the power supply synchronization of N number of ups system and this N number of ups system is in turn connected into ring topology by synchronous bus, above-mentioned N number of ups system realizes synchronous transmission of signal by synchronous bus and adjacent two ups systems are connected to a load via same load selector switch, wherein N be more than or equal to 2 integer.Above-mentioned N number of ups system also connects into ring topology by competition bus, and each ups system performs following steps:
Step S41: current ups system detects the signal in the competition bus of LBS cable and synchronous bus, above-mentioned signal comprises by the one or more characteristic pulses sent to competition bus in N number of ups system, and the width of the characteristic pulse of each ups system transmission is different.Especially, current ups system only sends characteristic pulse (now ups system meets the condition sending characteristic pulse to competition bus) when being load supplying by load selector switch to competition bus.
Step S42: judge whether place ups system is master synchronizer according to characteristic pulse, if master synchronizer then performs step S43, otherwise performs step S44.In this step, specifically when the width of the characteristic pulse of current ups system in competition bus is less than or equal to the width of the characteristic pulse that current ups system sends, can confirm that current ups system is master synchronizer.
Step S43: current ups system sends synchronizing signal to synchronous bus.
Step S44: current ups system follows the tracks of the synchronizing signal in synchronous bus.
For avoiding the frequent switching of master synchronizer, in step S43, when ups system is in different powering mode, send synchronizing signal type to synchronous bus different; Correspondingly, in step S42, when the synchronizing signal type only on synchronous bus is different from the powering mode of place ups system, confirm that place ups system is master synchronizer.
As shown in Figure 6, it is the schematic diagram of the present invention's many ups systems power supply synchronization method first embodiment, the method is for realizing the power supply synchronization of N number of ups system and this N number of ups system is in turn connected into ring topology by synchronous bus, above-mentioned N number of ups system realizes synchronous transmission of signal by synchronous bus and adjacent two ups systems are connected to a load via same load selector switch, wherein N be more than or equal to 2 integer.Above-mentioned N number of ups system also connects into ring topology by competition bus, and each ups system performs following steps:
Step S61: judge the pulse duration whether the machine (i.e. ups system) sends characteristic pulse and whether be less than or equal to the characteristic pulse that the machine sends to the pulse duration of the characteristic pulse in competition bus and competition bus, if the pulse duration that the machine is just sending the characteristic pulse of characteristic pulse to competition bus and in competition bus is less than or equal to the pulse duration of the characteristic pulse that the machine sends, then perform step S612, otherwise and perform step S613.
Step S612: putting the machine is main frame (i.e. master synchronizer), then performs step S614.
Step S613: putting the machine is from machine (i.e. non-master synchronizer), and follows the synchronizing signal on synchronous bus, then performs step S614.
Step S614: judge whether the machine is main frame, if the machine is main frame, performs step S615, otherwise perform step S620.
Step S615: judge that the machine is current and whether be load supplying, if then perform step S616, otherwise performs step S618.
Step S616: the machine sends synchronizing signal to synchronous bus, and perform step S617.
Step S617: the machine sends characteristic pulse to competition bus.
Step S618: the machine stops sending synchronizing signal to synchronous bus, and performs step S619.
Step S619: the machine stops sending characteristic pulse to competition bus.
Step S620: judge that the machine is current and whether be load supplying, if then perform step S621, otherwise performs step S622.
Step S621: the machine sends characteristic pulse to competition bus.
Step S622: the machine stops sending characteristic pulse to competition bus.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a power supply synchronization system for ups system more than, comprises N number of ups system and this N number of ups system is connected by LBS cable, described N be more than or equal to 2 integer; It is characterized in that: described LBS cable comprises synchronous bus and competition bus, and described N number of ups system realizes synchronous transmission of signal by synchronous bus;
Ups system described in each comprises characteristic pulse transmitting element, detecting signal unit and synchronizing signal transmitting element, wherein:
Described characteristic pulse transmitting element, for sending characteristic pulse to described competition bus, and the width of characteristic pulse that the characteristic pulse transmitting element of described multiple ups system sends to competition bus is different;
According to the signal detected, described detecting signal unit, for the signal of the competition bus and synchronous bus that detect LBS cable, and judges whether place ups system is master synchronizer;
Described synchronizing signal transmitting element, for sending synchronizing signal when this ups system is master synchronizer to synchronous bus.
2. many ups systems power supply synchronization system according to claim 1, is characterized in that, described characteristic pulse transmitting element only just sends characteristic pulse to competition bus when place ups system is load supplying.
3. many ups systems power supply synchronization system according to claim 1, it is characterized in that, in this power supply synchronization system, the pulsewidth of the characteristic pulse that the described characteristic pulse transmitting element of each ups system sends is different, described detecting signal unit meets the condition sending characteristic pulse to competition bus at this ups system, and the width of characteristic pulse in competition bus is when being less than or equal to the feature pulsewidth that this ups system sends, confirm that this ups system is master synchronizer.
4. many ups systems power supply synchronization system according to claim 3, it is characterized in that: the numbering of described N number of ups system is respectively 1,2 ..., N-2, N-1, N, and the width of the characteristic pulse of the characteristic pulse transmitting element of each ups system transmission meets the following conditions: T_1>T_2+T_3 ... + T_n, T_2>T_3 ... + T_n, T_n-2>T_n-1+T_n, T_n-1>T_n; (only each system is inconsistent for the size of pulsewidth, might not arrange by order above);
Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 1 sends, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 2 sends, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N sends, T_n-2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N-2 sends, and T_n-1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N-1 sends.
5. many ups systems power supply synchronization system according to claim 3, is characterized in that: the width of the characteristic pulse that the characteristic pulse transmitting element of ups system described in each sends when place ups system is bypass power supply from this place ups system be inversion power time the width of characteristic pulse that sends different; The numbering of described N number of ups system is respectively 1,2 ..., N-2, N-1, N, and the width of the characteristic pulse of the characteristic pulse transmitting element of each ups system transmission meets the following conditions: T_1>T_2+T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_2>T_3 ... + T_n+T_n+1+T_n+2 ... + T_n+n, T_n+n-2>T_n+n-1+T_n+n, T_n+n-1>T_n+n;
Wherein, T_1 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 1 sends when place ups system is in bypass power supply, T_n+1 is that the characteristic pulse transmitting element of the ups system being numbered 1 is at place ups system the width of characteristic pulse sent when inversion is powered, T_2 is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered 2 sends when place ups system is in bypass power supply, T_n+2 is that the characteristic pulse transmitting element of the ups system being numbered 2 is at place ups system the width of characteristic pulse sent when inversion is powered, T_n is the width of the characteristic pulse that the characteristic pulse transmitting element of the ups system being numbered N sends when place ups system is in bypass power supply, T_n+n is that the characteristic pulse transmitting element of the ups system being numbered N is at place ups system the width of characteristic pulse sent when inversion is powered, T_n+n-2 is that the characteristic pulse transmitting element of the ups system being numbered N-2 is at place ups system the width of characteristic pulse sent when inversion is powered, T_n+n-1 is that the characteristic pulse transmitting element of the ups system being numbered N-1 is at place ups system the width of characteristic pulse sent when inversion is powered.
6. many ups systems power supply synchronization system according to claim 1, is characterized in that: described synchronizing signal transmitting element, when ups system is in different powering mode, sends synchronizing signal type to synchronous bus different; When the synchronizing signal type of described detecting signal unit only on synchronous bus is different from the powering mode of place ups system, confirm that place ups system is master synchronizer.
7. the method for ups system power supply synchronization more than a kind, for realizing the power supply synchronization of N number of ups system and this N number of ups system is connected by LBS cable, described N be more than or equal to 2 integer, it is characterized in that: described LBS cable comprises synchronous bus and competition bus, each ups system performs following steps:
A () current ups system detects the competition bus of LBS cable and the signal of synchronous bus, described signal comprises by the one or more characteristic pulses sent respectively to competition bus in N number of ups system, and the width of the characteristic pulse of each ups system transmission is different;
B according to the signal detected, () judges whether place ups system is master synchronizer, if master synchronizer then performs step (c), otherwise perform step (d);
C () current ups system sends synchronizing signal to synchronous bus;
D () current ups system follows the tracks of the synchronizing signal in synchronous bus.
8. many ups systems power supply synchronization method according to claim 7, it is characterized in that: in described step (b), described current ups system meet this ups system in competition bus, send characteristic pulse condition and the width of characteristic pulse in competition bus is less than or equal to the width of the characteristic pulse that current ups system sends time, confirm that current ups system is master synchronizer.
9. many ups systems power supply synchronization method according to claim 7, is characterized in that: in described step (c), when ups system is in different powering mode, sends synchronizing signal type different to synchronous bus; When synchronizing signal type in described step (b) only on synchronous bus is different from the powering mode of place ups system, confirm that place ups system is master synchronizer.
10. many ups systems power supply synchronization method according to claim 7, is characterized in that: the powering mode of described ups system comprises bypass mode or inverter mode; Described current ups system only just sends characteristic pulse to described competition bus when bypass mode or inverter mode are powered.
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| CN105226810B (en) | 2018-01-19 |
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