CN101291058B - Double AC bus synchronizing apparatus for AC sourced system - Google Patents
Double AC bus synchronizing apparatus for AC sourced system Download PDFInfo
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- CN101291058B CN101291058B CN2007100969439A CN200710096943A CN101291058B CN 101291058 B CN101291058 B CN 101291058B CN 2007100969439 A CN2007100969439 A CN 2007100969439A CN 200710096943 A CN200710096943 A CN 200710096943A CN 101291058 B CN101291058 B CN 101291058B
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Abstract
The invention discloses a double AC bus synchronizer for AC source systems, comprising a main frame competitive bus by which a plurality of AC source systems compete to be the main frame, a first gating unit used to send synchronous source signals selected by the main frame to a synchronous source signal bus, and a second gating unit used to choose local synchronous source signals or external synchronous source signals to be the local synchronous source. The synchronizer has the advantages of improving the integration level of the system, lowering system cost, avoiding single point failure of the system and further improving reliability of the system.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of double cross stream bus synchronizing apparatus that is used for the alternating current source system.
Background technology
For other uninterruptible power system (UPS), on line type UPS can carry out more perfect protection to load, but when fault of converter, change over switch fault or conversion under the situation of municipal power failure, load can lose protection equally.So for the higher load of reliability requirement, usually require its power supply to adopt the mode of redundancy backup, for example, series connection backup, parallel redundancy, dual bus mode etc., it all is the backup mode that often adopts, and double bus system is becoming the distribution system of high reliability using electricity system first-selection gradually because have advantages such as high reliability and high fault tolerance.
In double cross stream bus-bar system, protect important load with a load diverter switch usually.The load diverter switch has two-way to exchange input usually; the AC load input of wherein arbitrary road can be exported to electric; when unusual or fault took place the alternating current source of powering load, the load diverter switch can switch to another alternating current source rapidly, and it is uninterrupted that proof load is powered.From the operation principle of double cross stream bus and load diverter switch as can be seen, for guaranteeing to satisfy load request switching time, it between the input source is necessary synchronously that two-way exchanges.
For realize two-way exchange between the input source synchronously, as shown in Figure 1, can concentrate the mode of synchronization control module reach the synchronous requirement of input source by increasing.Yet the synchronization control module bulky generally includes input source phase detection unit, synchronisation source selected cell and synchronisation source output unit several sections.When the phase place of detected unit was consistent, synchronization module was in park mode, and participation system is regulated; And when deviation appearred in two detected unit phase places, the synchronisation source selected cell was selected a synchronisation source according to the logic of setting, and this synchronisation source is exported to a controlled alternating current source generation system (normally UPS), made two alternating current sources reach synchronous.From the principle of work and power of synchronization module as can be seen, this synchronous adjusting method is a kind of central controlled method, synchronization control module is the single point failure point of system, therefore when synchronization module breaks down, this system can not guarantee between two ups systems synchronously, also just cause two of load diverter switches to exchange the asynchronous of input; And synchronization control module just participates in when deviation appears in detected alternating current source regulating detecting, so this system adopts is the scheme of control of lagging behind.
When increase UPS forms complicated double-bus configuration system with formation by a plurality of alternating current sources in the system as shown in Figure 2, need to give the UPS of every increase that synchronization control module all is set respectively, thereby cause the number of devices in the system to increase greatly, therefore increased the complexity of system, reduced reliability.
Yet, propose at present to realize the technical scheme of the double-bus configuration system of low cost, high integration, high reliability as yet.
Summary of the invention
Consider the problems referred to above and make the present invention.
For this reason, according to embodiments of the invention, provide a kind of double cross stream bus synchronizing apparatus that is used for the alternating current source system.
This device comprises: the main frame competition bus, compete as main frame by the main frame competition bus between a plurality of alternating current source system; First gating unit is used for the synchronisation source signal that main frame is selected and is sent to the synchronisation source signal bus; Second gating unit is used to select the synchronisation source signal of this machine or the external sync source signal synchronisation source as this machine.
Wherein, as other alternating current source systems beyond the alternating current source system of main frame as slave.And the selected synchronisation source signal of main frame is sent to all slaves by the synchronisation source signal bus.Here, the synchronisation source signal can be following any: by-passing signal, inversion reference signal, inversion output.
Wherein, first gating unit can comprise first switch and second switch, and wherein, first switch is used for when bypass is unusual, selects inversion output to be sent to the synchronisation source signal bus as the synchronisation source signal of main frame and with inversion output by closure; Second switch is used for working as bypass just often, selects the synchronisation source signal of by-passing signal as main frame by closure, and by-passing signal is sent to the synchronisation source signal bus.
In addition, for slave, its first gating unit disconnects.
Second gating unit can comprise the 3rd switch and the 4th switch, and wherein, the 3rd switch is used for coming by closure the external sync source signal of gating synchronisation source signal bus, and the 4th switch is used for coming by closure the synchronisation source of gating main frame.
In addition, in this device, there is the priority via main frame competition bus competition main frame in the alternating current source system that is in bypass output in a plurality of alternating current source system.
By technique scheme of the present invention, can improve the integrated level of system, reduce the cost of system, avoid the Single Point of Faliure of system simultaneously, thereby improved the reliability of system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 realizes the logic diagram of support that dual bus is switched according to the synchronization module that utilizes of correlation technique;
Fig. 2 is the block diagram of the distribution system formed according to the uninterruptible power system that is switched by direct support dual bus of correlation technique;
Fig. 3 is the block diagram according to the double cross stream bus synchronizing apparatus that is used for the alternating current source system of the embodiment of the invention;
Fig. 4 is the in-built block diagram according to the double cross stream bus synchronizing apparatus that is used for the alternating current source system of the embodiment of the invention;
Fig. 5 is the block diagram that connects the formed system in back according to a plurality of examples that are used for the double cross stream bus synchronizing apparatus of alternating current source system of the embodiment of the invention; And
Fig. 6 is the block diagram of the multichannel power distribution system that forms according to the uninterruptible power system that is switched by direct support dual bus of the embodiment of the invention.
Embodiment
In the present embodiment, provide a kind of double cross stream bus synchronizing apparatus that is used for the alternating current source system.
In implementation procedure of the present invention, can realize gating unit in many ways, below among the embodiment that will describe, realizing first gating unit, and realize that by two switches second gating unit is that example describes by two switches.
As shown in Figure 3, this device comprises: main frame competition bus 302, can produce main frame competition logic, and compete as main frame by the main frame competition bus between the promptly a plurality of alternating current source system; First gating unit 304 comprises first switch and second switch, is used for the synchronisation source signal that main frame is selected and is sent to synchronisation source signal bus 308; Second gating unit 306 comprises the 3rd switch and the 4th switch, is used to select the synchronisation source signal of this machine or the external sync source signal synchronisation source as this machine.
Below will describe each details of above-mentioned processing in detail.
At first, as other alternating current source systems beyond the alternating current source system of main frame as slave.And the selected synchronisation source signal of main frame is sent to all slaves by synchronisation source signal bus 308.Here, the synchronisation source signal can be following any: by-passing signal, inversion reference signal, inversion output.
For main frame competition bus 302, have multiplely by its method that produces main frame, in embodiments of the present invention, preferably adopt following method:
The first step, each uninterruptible power system (UPS) initialization set slave, and detect main frame competition bus 302;
In second step, if main frame competition bus 302 negative level, then each UPS begins to seize bus according to self priority;
In the 3rd step, the UPS that priority is the highest obtains bus;
In the 4th step, when main frame withdrawed from for some reason, other slave repeated three steps of the first step to the, produces new main frame.
Need to prove, in embodiments of the present invention, preferably, be in the alternating current source system of bypass output in a plurality of alternating current source system, have priority via main frame competition bus competition main frame, this be because, when a UPS is in bypass output, its output can't be followed the tracks of the synchronisation source signal, therefore has the priority of competition main frame.
Wherein, show in detail the structure of gating unit among Fig. 4.
As shown in Figure 4, in first gating unit 304, first K switch 1 is used for when bypass is unusual, select inversion output to be sent to the synchronisation source signal bus by closure as the synchronisation source signal of main frame and with inversion output, at this moment, all subordinate motors track synchronisation source buses, that is, and the inversion of main frame output; Second switch K2 is used for working as bypass just often, select the synchronisation source signal of by-passing signal by closure, and by-passing signal is sent to the synchronisation source signal bus, at this moment as main frame, all slave detecting synchronisation source signal buss are also followed the tracks of synchronizing signal, promptly follow the tracks of the bypass of main frame.
First gating unit 304 that it should be noted that slave all disconnects.
In second gating unit 306, the 3rd K switch 3 is used for coming by closure the external sync source signal of gating synchronisation source signal bus, and the 4th K switch 4 is used for coming by closure the synchronisation source of gating main frame.
Fig. 5 is the block diagram that connects the formed system in back according to the example by 4 double cross stream bus synchronizing apparatus of the embodiment of the invention, and as shown in Figure 5, first gating unit and second gating unit of each double cross stream bus synchronizing apparatus all are connected to the synchronisation source bus.
The block diagram of the multichannel power distribution system that Fig. 6 is made up of the uninterruptible power system (UPS) that direct support dual bus switches.
In described embodiment before, realized first gating unit by first switch and second switch, and realized second gating unit by the 3rd switch and the 4th switch, in addition, switch that can also be by other suitable number or logical circuit wait realizes first gating unit and second gating unit, and these different implementations include within the scope of the present invention.
In sum, the present invention produces a main frame by the main frame competition bus between a plurality of alternating current source system, this main frame sends source of synchronising signal to slaves all in the system, when main frame breaks down, main frame withdraws from, system can be from original slave produces new main frame automatically by competition, thus the synchronization control function of this moment can finish by arbitrary alternating current source system, thereby avoided the Single Point of Faliure of system; Alternating current source equipment in the system is followed the tracks of same synchronizing signal, has just guaranteed the synchronous of all alternating current source outputs from the source, has realized leading control; And no matter how many platform alternating current sources are formed complicated double cross stream bus-bar system, only the alternating current source lock unit that increases need be inserted signal bus, thereby system are linked and packed simple and reliable.
Therefore,, can improve the integrated level of system, reduce the cost of system, avoid the Single Point of Faliure of system simultaneously, thereby improved the reliability of system by means of technical scheme of the present invention.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a double cross stream bus synchronizing apparatus that is used for the alternating current source system is characterized in that, comprising:
The main frame competition bus is competed as main frame by described main frame competition bus between a plurality of alternating current source system;
First gating unit is used for the synchronisation source signal that described main frame is selected and is sent to the synchronisation source signal bus; And
Second gating unit is used to select the synchronisation source signal of this machine or the external sync source signal synchronisation source as this machine.
2. double cross according to claim 1 stream bus synchronizing apparatus is characterized in that, as other alternating current source systems beyond the alternating current source system of main frame as slave.
3. double cross stream bus synchronizing apparatus according to claim 2 is characterized in that the selected described synchronisation source signal of described main frame is sent to all described slaves by described synchronisation source signal bus.
4. double cross according to claim 3 stream bus synchronizing apparatus is characterized in that, described synchronisation source signal be following any: by-passing signal, inversion reference signal, inversion output.
5. double cross stream bus synchronizing apparatus according to claim 4 is characterized in that described first gating unit comprises first switch and second switch.
6. double cross stream bus synchronizing apparatus according to claim 5 is characterized in that,
Described first switch is used for when bypass is unusual, selects described inversion output to be sent to described synchronisation source signal bus as the described synchronisation source signal of described main frame and with described inversion output by closure; And
Described second switch is used for working as bypass just often, selects the described synchronisation source signal of described by-passing signal as described main frame by closure, and described by-passing signal is sent to described synchronisation source signal bus.
7. double cross stream bus synchronizing apparatus according to claim 5 is characterized in that described first gating unit of described slave disconnects.
8. double cross stream bus synchronizing apparatus according to claim 4 is characterized in that described second gating unit comprises the 3rd switch and the 4th switch.
9. double cross stream bus synchronizing apparatus according to claim 8 is characterized in that described the 3rd switch is used for coming by closure the external sync source signal of the described synchronisation source signal bus of gating; And
Described the 4th switch is used for coming by closure the synchronisation source of the described main frame of gating.
10. double cross according to claim 1 stream bus synchronizing apparatus is characterized in that, there is the priority of competing described main frame via described main frame competition bus in the alternating current source system that is in bypass output in the described a plurality of alternating current source system.
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| CN2007100969439A CN101291058B (en) | 2007-04-19 | 2007-04-19 | Double AC bus synchronizing apparatus for AC sourced system |
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| CN2007100969439A CN101291058B (en) | 2007-04-19 | 2007-04-19 | Double AC bus synchronizing apparatus for AC sourced system |
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| CN101291058B true CN101291058B (en) | 2011-05-11 |
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| CN103701192B (en) * | 2012-09-27 | 2016-05-18 | 力博特公司 | A kind of Modular UPS system and method for supplying power to thereof |
| CN105226810B (en) * | 2015-10-12 | 2018-01-19 | 深圳市伊力科电源有限公司 | More ups system power supply synchronization system and methods |
| CN107294196B (en) * | 2016-03-31 | 2022-04-19 | 中兴通讯股份有限公司 | Standby energy storage device of digital subscriber line access equipment and control method thereof |
| CN108874009A (en) * | 2018-07-25 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of method, controller and the system of dynamic adaptation load |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556578A (en) * | 2004-01-05 | 2004-12-22 | 中兴通讯股份有限公司 | Parallel synchronous phase locking method of uninterrupted power source |
| CN1592031A (en) * | 2003-09-05 | 2005-03-09 | 飞瑞股份有限公司 | Uninterruption power source module parallel system and by-pass switching method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1592031A (en) * | 2003-09-05 | 2005-03-09 | 飞瑞股份有限公司 | Uninterruption power source module parallel system and by-pass switching method thereof |
| CN1556578A (en) * | 2004-01-05 | 2004-12-22 | 中兴通讯股份有限公司 | Parallel synchronous phase locking method of uninterrupted power source |
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