CN102856971B - A kind of DC power system and method realizing multimachine monitoring - Google Patents
A kind of DC power system and method realizing multimachine monitoring Download PDFInfo
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- CN102856971B CN102856971B CN201110177517.4A CN201110177517A CN102856971B CN 102856971 B CN102856971 B CN 102856971B CN 201110177517 A CN201110177517 A CN 201110177517A CN 102856971 B CN102856971 B CN 102856971B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
Abstract
The invention discloses a kind of DC power system and the method that realize multimachine monitoring, this system comprises main monitoring unit for managing separately rectifier cabinet and one or more from monitoring unit, described main monitoring unit be respectively connected from monitoring unit, be all connected from monitoring unit from monitoring unit with other; Described main monitoring unit, for performing main monitoring function and managing from monitoring unit each and control; Described from monitoring unit, for obtaining data backing up from described main monitoring unit and other from monitoring unit, time also for being non operating state at described main monitoring unit and originally possessing from monitoring unit the condition switching to main monitoring unit, switch to main monitoring unit.This programme avoids Large Copacity communication power supply monitoring unit to lose efficacy the loss caused user.
Description
Technical field
The present invention relates to direct current communication power supply monitoring field, particularly relate to a kind of DC power system and the method that realize multimachine monitoring.
Background technology
In communication power supply field, in order to improve the reliability that equipment is powered, the output of rectifier adopts N+1 redundancy backup technology.But in system monitoring, current communication power supply system only designs a monitoring unit, this monitoring unit is as system monitoring core, when breaking down or lost efficacy, the communication on system and backstage disconnects, (the power-supply system that such as some Duo Jia operators share that therefore system significant data also can be lost, user charges according to outlet side direct current power consumption, these significant datas such as direct current power consumption are kept at inside monitoring unit, if monitoring unit fault or inefficacy, corresponding loss can be caused) to user, this kind of mode can not meet important machine room and application scenario to the requirement of data safety and reliability.
Along with the development of mechanics of communication, telecom operators have higher requirement the aspect such as quality, reliability, capacity to communication power supply, especially when 2G/3G/4G tri-nets simultaneously/runs with station, will be increasing to the capacity requirement of communication power supply, its capacity requirement is generally greater than 1000 peaces, Single Cabinet capacity is difficult to satisfied such Large Copacity demand, usually adopts block form multimachine cabinet system to power.Some producers devise the Large Copacity communication power supply system of multimachine cabinet Parallel opertation, and each rectifier cabinet adopts independently monitoring unit to need to take more communication networking resources and distribution space.On the other hand, because three-phase input switch rectifier module exists the technology barriers that efficiency is difficult to the aspects such as raising, current Large Copacity communication power supply development trend builds hicap with Small And Medium Capacity MDQ, so just requires that the number of rectifier may reach 100-200.In a fairly large number of situation of rectification module, because all kinds of detection control holding wire is various, a monitoring unit management dozens of even up to a hundred rectifier modules, Wiring technique is complicated, production maintenance difficulty is large, the technical barrier of the aspects such as the control real-time difference that also there is bus driver scarce capacity and too much produce from monitoring unit, and data security when this kind of mode effectively can not ensure certain monitoring unit fault.
Summary of the invention
In prior art, each monitoring unit independent operating, having a strong impact on (as battery management function, each rectifier cabinet battery all fills or tests the start time inconsistent rectifier current limliting causing rear startup) of causing because the critical function in each cabinet is asynchronous on the one hand.On the other hand, single monitoring module independent operating can not improve the reliability of monitoring, can take more communication resources with during Surveillance center's networking.
The technical problem to be solved in the present invention is to provide a kind of DC power system and the method that realize multimachine monitoring, for ensureing that the fail safe of electric power data in DC power system provides solution.
In order to solve the problems of the technologies described above, the invention provides a kind of DC power system realizing multimachine monitoring, comprise main monitoring unit for managing separately rectifier cabinet and one or more from monitoring unit, described main monitoring unit be respectively connected from monitoring unit, be all connected from monitoring unit from monitoring unit with other; Described main monitoring unit, for performing main monitoring function and managing from monitoring unit each and control; Described from monitoring unit, for obtaining data backing up from described main monitoring unit and other from monitoring unit, time also for being non operating state at described main monitoring unit and originally possessing from monitoring unit the condition switching to main monitoring unit, switch to main monitoring unit.
Further, said system can also have following characteristics:
Described from monitoring unit, also for after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
Further, said system can also have following characteristics:
Possess and switch to the condition of main monitoring unit to refer to this from the address number of monitoring unit each minimum from monitoring unit address number.
Further, said system can also have following characteristics:
Also comprise the Surveillance center be all connected with each monitoring unit with described main monitoring unit; Described Surveillance center, for managing and configure described main monitoring unit with each from monitoring unit.
Further, said system can also have following characteristics:
Described main monitoring unit with from monitoring unit by for carrying out the network switch of network data exchange or the protocol converter for carrying out protocol conversion to network data is connected with described Surveillance center.
In order to solve the problems of the technologies described above, present invention also offers a kind of method realizing multimachine monitoring, comprising: main monitoring unit performs main monitoring function and to manage from monitoring unit each and control;
Obtain data with other from monitoring unit from monitoring unit from described main monitoring unit and back up, when described main monitoring unit is non operating state and this possesses from monitoring unit the condition switching to main monitoring unit, switching to main monitoring unit.
Further, said method can also have following characteristics:
Described from monitoring unit after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
Further, said method can also have following characteristics:
Possess and switch to the condition of main monitoring unit to refer to this from the address number of monitoring unit each minimum from monitoring unit address number.
Further, said method can also have following characteristics:
Main monitoring unit and each different and the address number of main monitoring unit is minimum from the address of monitoring unit is set; After judging that main monitoring unit is non operating state from monitoring unit, reduce address number with predetermined interval, what the address number after renewal was identical with the address number of former main monitoring unit switches to main monitoring unit from monitoring unit.
Further, said method can also have following characteristics:
Surveillance center manages and configures described main monitoring unit with each from monitoring unit.
This programme, for solving the Hot Spare problem of communication power supply Systems Monitoring Unit, improves the reliability of system monitoring.Multimachine cabinet system basis in parallel realizes multiple monitoring unit principal and subordinate's Hot Spare each other, fieldbus is adopted to carry out exchanges data and task scheduling between each monitoring unit of this system, each monitoring unit performs different tasks, after main monitoring unit lost efficacy, main monitoring unit can be automatically switched to from monitoring unit, be responsible for the process of whole system vital task, system call, important data backup and Background communication etc., serious problems (forfeiture of main monitoring unit global monitoring critical function) are replaced with glitch (disappearance from monitoring unit local monitoring function), avoid occurring because main monitoring unit lost efficacy or the catastrophe failure of post-fault system monitoring paralysis, the important process of system and data are continued, achieve the N+1 backup of monitoring unit, solve the neck of reliability problem of direct current communication power supply Systems Monitoring Unit, avoid Large Copacity communication power supply monitoring unit to lose efficacy the loss caused user.This programme also can at other communication apparatus and cabinet connect and multimachine monitoring in adopt.
Accompanying drawing explanation
Fig. 1 is the DC power system structure chart realizing multimachine monitoring;
Fig. 2 is the schematic diagram that carries into execution a plan from monitoring unit;
Fig. 3 is the schematic diagram that carries into execution a plan of main monitoring unit;
Fig. 4 is DC power system structure chart in specific embodiment one;
Fig. 5 is DC power system structure chart in specific embodiment two;
Fig. 6 is DC power system structure chart in specific embodiment three.
Embodiment
As shown in Figure 1, the DC power system realizing multimachine monitoring comprises main monitoring unit for managing separately rectifier cabinet and one or more from monitoring unit, described main monitoring unit be respectively connected from monitoring unit, be all connected from monitoring unit from monitoring unit with other.Such as, the fieldbus modes such as RS485, RS232, CAN, WLAN can be adopted between monitoring unit to form communication hardware connect.
Main monitoring unit is for performing main monitoring function and managing from monitoring unit each and control.
Be used for obtaining data backing up from described main monitoring unit and other from monitoring unit from monitoring unit, also for be non operating state at described main monitoring unit and this possesses from monitoring unit the condition switching to main monitoring unit time, switch to main monitoring unit.
Such as, adopt multiple rectifier cabinet output-parallel during system, each rectifier cabinet installs 1 monitoring module, manage 20 ~ 30 rectifier modules, system generally by 4 ~ 8 rectifier cabinet Parallel opertation, can calculate according to each rectifier 50A, the maximum direct current output capacity that can provide 12000A.Install a monitoring unit in each rectifier cabinet and monitor this rack, each monitoring unit manages rectification module in this rectifier cubicle and parameters independently, completes the acquisition and processing of various parameter in this rack.
Main monitoring unit and gather the various operational factors (data such as such as rectifier current voltage, this rack output current, this rack battery current, battery temperature and various switching value alarm amounts) of this rectifier interior of equipment cabinet from monitoring unit separately.Each monitoring unit is communicated with one another by fieldbus.
Main monitoring unit is responsible for system call, performs important task, and the process of responsible whole system significant data, is responsible for the communication of background monitoring center.Also be responsible for monitored object acquisition and processing in this rectifier cubicle simultaneously.Send to after the significant data of whole system has been packed and respectively back up from monitoring unit.Main monitoring unit also timing sends main monitoring unit broadcasting command in place (in this example, namely data backup commands uses at order of the bit as main monitoring unit) to from monitoring unit.When on-line operation from monitoring unit fault time, main monitoring unit reports corresponding alarm directly to backstage.
Be responsible for the monitoring of this rack running status from monitoring unit, and receive the data that issue of main monitoring unit and back up, and receive the online signal of main monitoring unit.From the system operation data request of monitoring unit response main monitoring unit, the relevant parameter collected by monitored object in this cabinet passes to main monitoring unit by fieldbus.Also have a set of timing and purge mechanism from monitoring unit simultaneously, in official hour, do not receive main monitoring unit at order of the bit or data backup commands, oneself will switch to main monitoring unit.
The hardware resource configuration consistency of each monitoring unit can be set, the consistency of function when ensureing to switch to main monitoring unit from monitoring unit.The object of each monitoring unit monitoring is substantially identical, can there is certain difference differences such as () such as battery pack number, rectifier number, environmental monitoring contents.
In system, possess and switch to the condition of main monitoring unit can be this from the address number of monitoring unit each minimum from monitoring unit address number.
From monitoring unit also for after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
Native system also comprises the Surveillance center be all connected with each monitoring unit with main monitoring unit; Surveillance center is used for management and configures described main monitoring unit with each from monitoring unit.Main monitoring unit can directly be connected with Surveillance center with from monitoring unit, main monitoring unit also can pass through to communicate with Surveillance center for the network switch carrying out network data exchange with from monitoring unit, system configuration one network switch completes the cascade of monitoring, realize the bi-directional data transparent transmission of one-to-many, form communication hardware by the mode such as RS232, RS485, CAN, LAN and wireless connections between system each monitoring unit with switch and be connected.Switch realizes the two-way transparent transmission of one-to-many of data.Switch form according to the physical interface formal character adopted during actual design, can select the serial ports switch (such as MOXA serial ports switch etc.) of Ethernet switch or one-to-many.
Main monitoring unit also can be communicated with Surveillance center by the protocol converter for carrying out protocol conversion to network data with from monitoring unit, or, the network switch is communicated with Surveillance center by this protocol converter, completes the transfer of data between long-range background net management and communication power supply system and protocol conversion.The network switch and protocol converter are Alternative devices.Protocol converter can carry out the process of data, integrates the data of each monitoring unit, realizes the communication of backstage and system.
Corresponding with above-mentioned DC power system realize the method that multimachine monitors and comprise: main monitoring unit performs main monitoring function and to manage from monitoring unit each and control; Obtain data with other from monitoring unit from monitoring unit from described main monitoring unit and back up, when described main monitoring unit is non operating state and this possesses from monitoring unit the condition switching to main monitoring unit, switching to main monitoring unit.
Said method also comprises: from monitoring unit after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
Said method also comprises: Surveillance center manages and configure described main monitoring unit with each from monitoring unit.
Possess and switch to the condition of main monitoring unit can be this from the address number of monitoring unit each minimum from monitoring unit address number.Such as, main monitoring unit and each different and the address number of main monitoring unit is minimum from the address of monitoring unit is set; After judging that main monitoring unit is non operating state from monitoring unit, reduce address number with predetermined interval, what the address number after renewal was identical with the address number of former main monitoring unit switches to main monitoring unit from monitoring unit.
Be exemplified below: between each monitoring unit, devise a kind of address allocation scheme, ensure that each module's address can not repeat.Main monitoring unit address is 0, is followed successively by 1,2......N from monitoring unit.A timer is designed from monitoring unit, do not receive main monitoring unit signal in place or data backup commands at the appointed time, then judge that main monitoring unit is in non operating state and namely lost efficacy or fault, by the machine address decrement, respectively perform from monitoring unit circulation, what address number was minimum automatically switches to main monitoring unit from monitoring unit (namely address is updated to No. 1 of 0 from monitoring unit), obtains respectively from the control of monitoring unit, and to backstage report and alarm.And from monitoring unit 2,3, after 4...... etc. receives the main monitoring unit signal in place or data backup commands that new main monitoring unit (originally from monitoring unit 1) sends, remove timer, keep original in monitoring unit pattern.Maximum number is from the address therefore vacancy of monitoring unit.When the monitoring unit reparation of losing efficacy or after changing, the maximum address of disappearance is distributed to the main monitoring unit repaired or change by main monitoring unit.When System Expansion, newly add from monitoring unit then by the address assignment of N+1.After the monitoring unit that main monitoring unit originally more renews, active reporting signal in place is to main monitoring unit, main monitoring unit calculate disappearance from the lowest address number of monitoring unit and distribute to new change from monitoring unit, realize the stable operation again of system.
As shown in Figure 2, comprise from carrying into execution a plan of monitoring unit:
SS1-initialization: be initialized as from monitoring unit pattern after monitoring unit powers on, received over time is less than the signal in place of main monitoring unit or data request command, judge that main monitoring unit is in non operating state (i.e. fault), then automatically switch to main monitoring unit pattern.Monitoring unit also can by the mode such as menu or switch manually arrange main monitoring unit or from monitoring single-address.
SS2-receives main monitoring unit order and judges: monitor main monitoring unit operating state from monitoring unit, if time-out does not receive information/data request command/data backup commands/function fill order in place that main monitoring unit is sent, then judge that main monitoring unit is in non operating state (i.e. fault), after software Key dithering, enter the machine address computation and competition program.
This rack of SS3-process internal task: the detection and the calculating that have comprised each rectifier data, each battery data and relevant operational factor in this rack, packing process etc.
The order that SS4-process main monitoring unit issues: receive and process the order that main monitoring unit issues, and removing main monitoring unit timer not in place, completing data and report, complete data backup, circulation performs from monitoring unit mode of operation.
SS5-the machine address computation and competition: the machine address number subtracts 1, when address number is reduced to 0, the machine switches to main monitoring unit immediately, sends main monitoring unit at order of the bit, load Backup Data, enter main monitoring unit mode of operation to fieldbus.
SS6-receives main monitoring unit order and judges: monitor main monitoring unit operating state from monitoring unit, if time-out does not receive the information in place that main monitoring unit is sent, then switch to main monitoring unit, enter main monitoring unit mode of operation; If receive new main monitoring unit at order of the bit, then get back to from monitoring unit mode of operation.
SS7 & SS8-enters main monitoring unit mode of operation, is responsible for the traffic control of whole system and the execution of critical function.
As shown in Figure 3, carrying into execution a plan of main monitoring unit comprises:
SM1-initialization: be initialized as from monitoring unit pattern after powering on, received over time, less than the signal in place of main monitoring unit or data request command, is set to main monitoring unit pattern.Monitoring unit also can by the mode such as menu or switch manually arrange main monitoring unit or from monitoring single-address.
This rack of SM2-process internal task: the detection and the calculating that have comprised each rectifier data, each battery data and relevant operational factor in this rack, packing process etc.
The process of SM3-system overall situation task: coordinate respectively from the operation and management of monitoring unit, to respectively issuing main monitoring unit at order of the bit and issue significant data (as battery capacity, battery charging state, load power consumption etc.) from monitoring unit.
SM4-process Background communication task: decompose and perform the order or request of data that backstage issues, report and alarm, reports main monitoring unit and from monitoring unit configuring condition.
SM5-process local communication task: by fieldbus read respectively from real time data and the running status of monitoring unit and point cabinet, issue fill order (as battery management etc.), complete data processing after be handed down to and back up from monitoring unit.
The system configuration that this section describes and embodiment, can simplify according to actual conditions when applying.Be described below by specific embodiment.
Specific embodiment one:
As shown in Figure 4, certain external Carrier Requirements exports the central machine room power supply of 4800A, and be made up of the rectifier cubicle of 4 1200A and an AC distribution panel, each rectifier cabinet installs single-phase rectifier module and a monitoring unit of 24 50A.Use RS485 as fieldbus between monitoring unit, complete intercoursing of the data between monitoring unit.Each monitoring unit carries out communication by RS232 and upper serial ports HUB veneer, and (serial ports HUB plate is a kind of serial ports switch being similar to the network switch, its realize 1 to 4 transparent transmission), realize the communication transfer of four monitoring units and host computer SNMP processing unit, SNMP processing unit possesses WEBSERVER function and supports snmp protocol, is responsible for the communication at system and background monitoring center.
Example is main monitoring unit by the monitoring in software set first S122 rectifier cubicle, complete the battery management of whole system, alarm management, parameter management and and the Core Feature such as Background communication, and complete scheduling and the process of whole system task, when performing these functions, by RS485 fieldbus system important parameter and data being passed to and respectively carrying out data backup from monitoring unit.Simultaneously main monitoring unit also carry out this rectifier cubicle in the acquisition and processing of quantity of state, switching value and various service data, process and result are also passed to simultaneously and respectively carry out data backup from monitoring unit.
Monitoring unit in example in three S122 rectifier cubicles is from monitoring unit by software, realize the acquisition and processing of quantity of state in this rectifier cubicle, switching value and various service data, result is passed to main monitoring unit simultaneously, duty receives the order also synchronous execution that main monitoring unit issues, also each parameter of main monitoring unit transmission is backed up from monitoring unit, monitoring main monitoring unit operating state.
When main monitoring unit extract or fault time, No. 1 S122 automatically switches to main monitoring unit from monitoring unit, loads the data of backup area, performs the function of main monitoring unit, and upwards background management system reports old main monitoring unit trouble or failure simultaneously.
Specific embodiment two:
Example is as shown in Figure 5 a kind of standby monitoring networking mode of evolution, by parallel connection and a upper switch of two monitoring units, and the monitor task of the system of bearing that put into operation immediately from monitoring unit after main monitoring unit lost efficacy.
Specific embodiment three:
In the example described in Fig. 6, adopt intelligent rectifier module, when adopting the communication modes such as CANBUS between monitoring unit and rectifier module, system architecture simplifies further, when monitored object and monitored object, time communication modes between backstage is identical with physical link, backuping each other of two monitoring units can be formed, also can adopt in other communication apparatus system.
What this programme mainly showed is the mutually redundant supervisory control system of a kind of multiple monitoring unit, same hardware configuration and software function program is adopted between monitoring unit, but main monitoring unit and run different software modules from monitoring unit, when main monitoring unit trouble or failure, automatically switch to main monitoring unit from monitoring unit to run, load the data of backup, each management role of continuity whole system, improves the reliabilty and availability monitored in communication power supply system.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. realize a DC power system for multimachine monitoring, it is characterized in that,
Comprise main monitoring unit for managing separately rectifier cabinet and one or more from monitoring unit, described main monitoring unit be respectively connected from monitoring unit, be all connected from monitoring unit from monitoring unit with other;
Described main monitoring unit, for performing main monitoring function and managing from monitoring unit each and control;
Described from monitoring unit, for obtaining data backing up from described main monitoring unit and other from monitoring unit, time also for being non operating state at described main monitoring unit and originally possessing from monitoring unit the condition switching to main monitoring unit, switch to main monitoring unit.
2. the system as claimed in claim 1, is characterized in that,
Described from monitoring unit, also for after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
3. the system as claimed in claim 1, is characterized in that,
Possess and switch to the condition of main monitoring unit to refer to this from the address number of monitoring unit each minimum from monitoring unit address number.
4. the system as claimed in claim 1, is characterized in that,
Also comprise and described main monitoring unit and the Surveillance center be respectively all connected from monitoring unit;
Described Surveillance center, for managing and configure described main monitoring unit with each from monitoring unit.
5. the system as claimed in claim 1, is characterized in that,
Described main monitoring unit with from monitoring unit by for carrying out the network switch of network data exchange or the protocol converter for carrying out protocol conversion to network data is connected with described Surveillance center.
6. realize a method for multimachine monitoring, it is characterized in that,
Main monitoring unit performs main monitoring function and to manage from monitoring unit each and control;
Obtain data with other from monitoring unit from monitoring unit from described main monitoring unit and back up, when described main monitoring unit is non operating state and this possesses from monitoring unit the condition switching to main monitoring unit, switching to main monitoring unit.
7. method as claimed in claim 6, is characterized in that,
Described from monitoring unit after switching to main monitoring unit, according to backup main monitoring unit and other from the main monitoring function of the data run of monitoring unit.
8. method as claimed in claim 6, is characterized in that,
Possess and switch to the condition of main monitoring unit to refer to this from the address number of monitoring unit each minimum from monitoring unit address number.
9. method as claimed in claim 8, is characterized in that,
Main monitoring unit and each different and the address number of main monitoring unit is minimum from the address of monitoring unit is set;
After judging that main monitoring unit is non operating state from monitoring unit, reduce address number with predetermined interval, what the address number after renewal was identical with the address number of former main monitoring unit switches to main monitoring unit from monitoring unit.
10. method as claimed in claim 9, is characterized in that,
Surveillance center manages and configures described main monitoring unit with each from monitoring unit.
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| CN201110177517.4A CN102856971B (en) | 2011-06-28 | 2011-06-28 | A kind of DC power system and method realizing multimachine monitoring |
| PCT/CN2012/077643 WO2013000412A1 (en) | 2011-06-28 | 2012-06-27 | Direct current power supply system and method for multi-machine monitoring |
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| CN201110177517.4A CN102856971B (en) | 2011-06-28 | 2011-06-28 | A kind of DC power system and method realizing multimachine monitoring |
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