CN103187780B - Ultra-large power supply system and monitoring method and system for ultra-large power supply system - Google Patents

Abstract

An ultra-large power supply system comprises a master power supply and at least one slave power supply, wherein a positive busbar and a negative busbar of the master power supply are connected with a positive busbar and a negative busbar of each slave power supply respectively; and the master power supply is communicated with each slave power supply by a bus. The ultra-large power supply system and a monitoring method and a system for the ultra-large power supply system are used for solving the problems of high cost and unstable power supply arising from a separated busbar power supply mode adopted by the existing ultra-large power supply system, and the problem that the different busbars cannot be communicated with each other, and further achieves current equalization among system cabinet modules.

Description

An ultra-large power supply system and its monitoring method and system

technical field

The invention relates to the field of power supply technology, in particular to an ultra-large power supply system and a monitoring method and system thereof.

Background technique

In the central computer room of the communication, it is necessary to use a large power supply system for power supply. In order to ensure the normal operation of the ultra-large power system, it is necessary to monitor the ultra-large power system.

For the monitoring method of super large power system, because each power module of the super power system needs to be connected to a node of the CAN bus to realize the information collection of the power module, but the number of power modules required by the super power system far exceeds the maximum node of the CAN bus At present, multi-busbar power supply is usually used in the industry. Each busbar uses a CAN bus as the monitoring channel, which requires multiple monitoring methods to achieve. The current power supply method using separate busbars will lead to high costs and unstable power supply.

In addition, the power modules of different cabinets (different busbars) cannot communicate with each other due to the use of different CAN buses as monitoring channels, so that the voltage deviation between the busbars cannot be resolved, making it difficult to manage the power modules of the super-large power supply system conduct.

Therefore, how to provide an ultra-large power supply system and its monitoring method and system to solve the problems of high cost and unstable power supply caused by the separate busbar power supply mode in the existing ultra-large power supply system, and the problem of inability to communicate between different busbars , is a technical problem to be solved by those skilled in the art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a super-large power supply system and its monitoring method and system, which are used to solve the problems of high cost and unstable power supply caused by the use of separate busbar power supply in the existing super-large power supply system, and the problems of different busbars The problem of inability to communicate between rows can be solved, and the problem of current sharing between system cabinet modules can be further solved.

The present invention provides an ultra-large power supply system, the system comprising:

a master power supply and at least one slave power supply;

The positive and negative busbars of the main power supply are respectively connected to the positive and negative busbars of each of the slave power supplies;

The master power supply communicates with the slave power supply through a bus.

Preferably, the main power supply is provided with a battery; the slave power supply has no battery.

Preferably, the slave power supply communicates with the main power supply through a specified private protocol.

Preferably, the slave power supply reports the number of power supply modules of the slave power supply, the rated current of the power supply modules of the slave power supply, the output voltage, and the alarm status to the main power supply through the bus; the main power supply reports to the main power supply through the bus The control command is issued from the power supply.

The present invention also provides a monitoring method for an ultra-large power supply system, the method is used to monitor the system described in claim 1, and the method includes:

Monitoring the load condition of the ultra-large power supply system;

If the super large power supply system has no load, both the main power supply and the slave power supply are in a floating charge state, and the output currents of the power module of the main power supply and the power module of the slave power supply are in the maximum output current state ;

If the super-large power supply system is under load, current sharing control is performed.

Preferably, the current sharing control includes the following steps:

The main power supply obtains the size of the load, and calculates the current that the power module should output according to the number of power modules reported by the slave power supply and the number of power modules carried by the main power supply;

The power supply module of the main power supply sends the voltage information after the output voltage is increased by a predetermined voltage deviation to the slave power supply, and the slave power supply executes the command of the voltage information;

The main power supply delivers an output current to the slave power supply, and the slave power supply controls its own output current to be the output current delivered by the main power supply;

The main power supply controls itself to release the output current to the maximum output current.

Preferably, after the step of the main power supply controlling itself to release the output current to the maximum output current includes:

The slave power supply reports output current to the main power supply;

The main power supply compares the output current reported by the slave power supply to determine whether the last command was executed successfully;

If successful, end; otherwise, according to the difference between the actual output current of the power module of the current slave power supply and the output current sent, the master power supply issues a new output current command again.

Preferably, when the system monitors the sudden unloading of the load, the control maintains the output current of the slave power supply;

The main power supply detects that the load changes, and immediately sends a new output current command to the slave power supply, so as to keep the super large power supply system from flowing, and realize the balance between the power supply modules of the master and slave power supplies through the current sharing control. current sharing.

Preferably, when the system detects a sudden load, the main power supply controls the output current of the slave power supply, and the output current of the main power supply is released to the maximum output current, and the sudden increase of the load It is applied to the main power supply, and the current sharing between the power supply modules of the main power supply and the slave power supply is realized through the current sharing control.

Preferably, the predetermined voltage deviation is 0.1 to 1.0V.

The present invention also provides a super-large power system monitoring system, the system is used to monitor the super-large power system described in claim 1, and the super-large power system monitoring system includes:

A monitoring unit, configured to monitor the load condition of the super-large power supply system;

The first control unit is configured to control both the main power supply and the slave power supply to be in a floating charging state when the monitoring unit monitors that the super large power supply system is not under load, and the main power supply and the slave power supply The output current of the power module is in the state of maximum output current;

The second control unit is configured to perform current sharing control when the monitoring unit monitors that the super power supply system is under load.

Preferably, the second control unit includes:

The first calculation subunit obtains the size of the load through the main power supply, and calculates the power supply modules of the main power supply and the slave power supply according to the number of power supply modules reported by the slave power supply and the number of power supply modules carried by the main power supply The output current that should be output;

The first control subunit controls the main power supply to send voltage information after the output voltage of the power module of the main power supply is increased by a predetermined voltage deviation to the slave power supply, and the slave power supply executes the command of the voltage information;

The second control subunit controls the master power supply to deliver an output current to the slave power supply, and the slave power supply controls its own output current to be the output current delivered by the master power supply;

The third control subunit controls the main power supply to issue an output current command of the main power supply.

Preferably, the second control unit further includes:

The judging subunit compares the output current reported by the slave power supply with the main power supply, and judges whether the last command was successfully executed; if successful, end; otherwise, notify the fourth control subunit;

The fourth control subunit, when the judging subunit judges that the last command was not successfully executed, according to the difference between the actual output of the power module of the current slave power supply and the output current sent by the main power supply to the slave power supply, the main power supply is turned off again. send a new output current.

Preferably, when the monitoring unit detects sudden load unloading, the second control unit controls and maintains the output current of the slave power supply;

According to the change of the load detected by the main power supply, the new output current calculated by the first calculation sub-unit is immediately issued to the slave power supply, so as to keep the super large power supply system from flowing, and through the second The current sharing control of the control unit realizes current sharing between the power supply modules of the master and slave power supplies.

Preferably, when the monitoring unit detects a sudden load, the second control unit controls to limit the output current of the slave power supply, and the second control unit controls to release the output current of the main power supply to the maximum output current, and the sudden load The added load is applied to the main power supply, and the current sharing between the power modules of the main power supply and the slave power supply is realized through the current sharing control of the second control unit.

Compared with the prior art, the present invention has the following advantages:

The ultra-large power supply system described in the embodiment of the present invention has at least two sets of power supplies connected in parallel—one set of main power supplies and at least one set of slave power supplies. Because at least two sets of power supplies are connected in parallel, they can communicate with each other. Users can parallel connect other slave power supplies ( Such as communication power supply), so as to achieve expansion.

The super large power supply system provided by the invention only needs to connect the positive and negative busbars of each set of power supply respectively, and the realization process is simple. The ultra-large power supply system described in the embodiment of the present invention can be used to realize expansion of one set of power supply or multiple sets of power supply systems.

Busbar: an output bus that can be divided into multiple branches, with positive and negative polarity. The positive and negative poles of the power module, battery, and load are all connected in parallel on the output bus of the busbar.

The positive and negative poles of the busbar can be called positive and negative busbars.

According to the monitoring method of the ultra-large power supply system in the embodiment of the present invention, due to the voltage deviation between the main power supply and the slave power supply, the slave power supply can be preferentially loaded, so as to realize the automatic current distribution among the power modules including the main power supply and the slave power supply connected in parallel, so as to achieve Current sharing effect, so that the load can be properly distributed between the power supply modules of the main power supply and the slave power supply, without parameter adjustment, and automatic adjustment can be realized.

Furthermore, in the case of a sudden load increase in the ultra-large power system monitoring method described in the embodiment of the present invention, the main power supply can first undertake the newly added load, and then achieve current sharing through a current sharing scheme.

Description of drawings

Fig. 1 is a schematic structural diagram of the ultra-large power supply system according to the first embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the ultra-large power supply system according to the second embodiment of the present invention;

Fig. 3 is an output current-load characteristic curve diagram of the ultra-large power supply system described in the embodiment of the present invention;

Fig. 4 is an output voltage-load characteristic curve diagram of the ultra-large power supply system described in the embodiment of the present invention;

Fig. 5 is a flow chart of the super large power system monitoring method according to the first embodiment of the present invention;

Fig. 6 is a flow chart of the monitoring method for super large power supply system according to the second embodiment of the present invention;

Fig. 7 is a structural diagram of the super large power supply system monitoring system according to the first embodiment of the present invention;

Fig. 8 is a structural diagram of the super large power supply system monitoring system according to the second embodiment of the present invention;

Fig. 9 is a flow chart of the calculation method of the load current according to the embodiment of the present invention;

10 is a flow chart of the method for calculating the output voltage of each module according to the embodiment of the present invention;

Fig. 11 is a flow chart of commands for executing the voltage information from the power supply according to the embodiment of the present invention;

Fig. 12 is an output voltage-load characteristic curve diagram of a conventional power supply system.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

The technical problem to be solved by the present invention is to provide a super-large power supply system and its monitoring method and system, which are used to solve the problems of high cost and unstable power supply caused by the use of separate busbar power supply in the existing super-large power supply system, and the problems of different busbars The problem of inability to communicate between rows can be solved, and the problem of current sharing between system cabinet modules can be further solved.

The ultra-large power supply system described in the embodiment of the present invention can be specifically applied to a communication center computer room to supply power for communication equipment.

Referring to Fig. 1 and Fig. 2, Fig. 1 is a schematic structural diagram of the ultra-large power supply system according to the first embodiment of the present invention; Fig. 2 is a schematic structural diagram of the ultra-large power supply system according to the second embodiment of the present invention.

The ultra-large power supply system described in the first embodiment of the present invention includes: a master power supply and a slave power supply.

The difference between the second embodiment of the present invention and the first embodiment is that the ultra-large power supply system includes: one master power supply and two slave power supplies.

The ultra-large power supply system in the embodiment of the present invention may include a master power supply and at least one slave power supply. The slave power supply can be set as required, specifically one or more. The main power supply must exist and be one.

The positive and negative busbars of the main power supply are respectively connected to the positive and negative busbars of each of the slave power supplies; that is, the main power supply and the slave power supplies are connected in parallel. Communication between master and slave power supplies connected in parallel is possible. When a new secondary power supply needs to be added, it is only necessary to connect the positive and negative busbars of the newly added secondary power supply to the positive and negative busbars of the ultra-large power supply system described in the embodiment of the present invention, so as to facilitate the expansion of the ultra-large power supply system.

The main power supply in the embodiment of the present invention may be provided with a battery; the slave power supply may not be provided with a battery.

When the AC power input (municipal AC power) of the ultra-large power supply system described in the embodiment of the present invention is disconnected, the battery can serve as a backup power supply to directly supply power to the communication equipment.

Since the input voltage of the communication device is 48V direct current, the output voltage of the battery may specifically be 53.8V.

Both the main power supply and the slave power supply may include multiple power supply modules as required, and each power supply module supplies power to a communication device.

The implementation process of the ultra-large power supply system described in the embodiment of the present invention is simple, and only needs to connect the positive and negative busbars of the master and slave power supplies respectively. The ultra-large power supply system described in the embodiment of the present invention can be used to expand the capacity of one set of power supply systems, and can also be used to realize the expansion of multiple sets of power supply systems.

The main power supply and the slave power supply can communicate through a bus. Specifically, the bus may be an RS485 bus. The slave power supply and the main power supply can communicate through a specified private protocol. Communication information includes the following Table 1 and Table 2.

Table 1 Data content and transmission sequence reported from the power supply

Note: 14 means the number of signal numbers [0--14] included, because each module has 15 signals. NUB is the number of single modules.

Table 2 Single information and order of power module

serial number Signal name type of data Data length 1 Power module output current floating point number 4 2 Power module current floating point number 4 3 DC status of the power module E bytes 1 4 AC status of the power module E bytes 1 5 Power module runtime unsigned integer 4 6 Power module failure E bytes 1 7 over temperature E bytes 1 8 overvoltage E bytes 1 9 Power module protection E bytes 1 10 fan failure E bytes 1 11 Power module communication failure E bytes 1 12 Power module power limit E bytes 1 13 Power module AC power failure E bytes 1 14 Power module voltage floating point number 4 15 state of being E bytes 1

The slave power supply can report its own power module number, power module rated current, output voltage, and related alarm status to the master power supply through the RS485 bus.

The main power supply can send control commands to the slave power supply through the RS485 bus, and can indirectly control the power module of the slave power supply by this.

Referring to FIG. 5 , this figure is a flow chart of the super-large power system monitoring method according to the first embodiment of the present invention.

The super large power system monitoring method described in the first embodiment of the present invention is used to monitor the super large power system described in the first embodiment above, and the method includes:

S100. Monitor the load condition of the super large power supply system;

S200. If the super large power supply system has no load, both the master power supply and the slave power supply are in a floating charge state, and the output currents of the power modules of the master power supply and the slave power supply are in a maximum output current state.

Float charging state is the normal working state of the communication power system.

Since the input voltage of the communication equipment is 48V DC, the rated output voltage of the main power supply can be set to 53.5V. This voltage is also the setting value of the system output voltage when the communication power supply system is working normally, that is, the floating charge voltage.

S300. Perform current sharing control if the super large power supply system is under load.

As shown in FIG. 3 , the figure is an output current-load characteristic curve of the ultra-large power supply system according to the embodiment of the present invention. It can be seen from Figure 3 that the module output current of the master power supply is consistent with the output current of the module of the slave power supply as the load changes, achieving a current sharing effect.

Referring to Fig. 4 and Fig. 12, Fig. 4 is the output voltage-load characteristic curve diagram of the ultra-large power supply system according to the embodiment of the present invention; Fig. 12 is the output voltage-load characteristic curve diagram of the existing power supply system

The output voltage of the power supply module in the present invention is consistent with that of the main power supply and the slave power supply regardless of heavy load, normal load or light load.

However, under light load conditions in the prior art, the main power supply cannot output, and under normal load conditions, the output of the main power supply is not consistent with the output of the slave power supply. Only when the load is heavy, as in the present invention, the output of the main power supply and the output of the slave power supply are consistent, that is, all power supply modules can output normally, so that the service life of all power supply modules remains consistent. (Note: The current limit point is the percentage obtained by dividing the target output current of the power module by the rated output current of the power module)

In the ultra-large power supply system in the embodiment of the present invention, when the load changes, the main power supply can respond immediately, and the slave power supply can react with a delay.

Referring to FIG. 6 , FIG. 6 is a flow chart of the super-large power system monitoring method according to the second embodiment of the present invention.

Compared with the first embodiment, the super-large power supply system monitoring method in the second embodiment of the present invention is different in that the current sharing control includes the following steps:

S310. The main power supply obtains the size of the load, and calculates the output current that the power module should output according to the number of power modules reported by the slave power supply and the number of power modules carried by the main power supply;

First obtain all the information from the power supply, the content of the information is shown in Table 1 and Table 2.

If the acquisition is successful, the load current can be calculated according to the method shown in Figure 9, according to the number of power modules of the slave power supply, the rated current of the power module of the slave power supply, the number of power modules of the main power supply, and the rated current of the power module of the main power supply according to The scheme in Figure 10 calculates the final output current of each power module.

Referring to FIG. 9 , this figure is a flow chart of the calculation method of the load current according to the embodiment of the present invention.

The calculation method of the load current described in the embodiment of the present invention may specifically include the following steps:

Judging whether the ultra-large power supply system described in the embodiment of the present invention is started for the first time? If yes, obtain the output current of the main power supply and the charging and discharging current of the battery after initializing the median array; otherwise, directly obtain the output current of the main power supply and the charging and discharging current of the battery;

Then obtain the output current from the power supply;

Calculation: load current = main power output current + slave power output current - battery charge and discharge current;

Perform median filtering to obtain the final load output current;

Displays the load current.

Referring to FIG. 10 , this figure is a flow chart of the method for calculating the output current of each module (power module) according to the embodiment of the present invention.

The method for calculating the output current of each power module described in the embodiment of the present invention may specifically include the following steps:

Calculation: output current fSlaveOutput of the slave power supply = rated current of the power module of the slave power supply * (load current + expected output current of the battery) / (number of power modules of the main power supply * rated output current of the power module of the main power supply + number of power modules of the slave power supply * rated output current from the power module of the power supply)

Obtain the maximum output current fMaxOutput of a single power module;

Obtain the minimum output current fMinOutput of a single power module;

Obtain the average output current fAveOutput of a single power module;

Calculate the ratio of the maximum output current of a single module to the average output current of all modules: fCmpRatio1=abs(fMaxOutput-fAveOutput)/rated current of a single power module

Calculate the ratio of the minimum output current of a single module to the average output current of all modules: fCmpRatio2=abs(fMinOutput-fAveOutput)/rated current of a single power module

Determine whether fCmpRatio1>delta1 or fCmpRatio2>delta1 is true? If fCmpRatio1>delta1 or fCmpRatio2>delta1 is established, it is necessary to continue to judge whether the maximum output current of the main power supply > the maximum output current of the slave power supply is established?

If fCmpRatio1>delta1 or fCmpRatio2>delta1 is not established, then the output voltage and current of the slave power supply fSlaveOutput=fSlaveOutput, and then calculate the output voltage of the main power supply fMasterOutput=the rated output current of the power module of a single main power supply;

If the maximum output current of the main power supply > the maximum output current of the slave power supply, then calculate the output current of the slave power supply fSlaveOutput = fSlaveOutput + delta2; calculate the output current of the main power supply fMasterOutput = the rated output voltage of the power module of a single main power supply;

If the maximum output current of the main power supply > the maximum output current of the slave power supply does not hold, then the output current of the slave power supply fSlaveOutput = fSlaveOutput-delta2; then calculate the output current of the main power supply fMasterOutput = the rated output current of the power module of the main power supply.

Note: Delta1: the maximum allowable current sharing value of a single power module (main power supply, slave power supply), which can be set by the user according to the needs;

Delta2: A single power supply module (master power supply, slave power supply) accumulates or subtracts each time.

S320. The power module of the main power supply sends the voltage information (that is, the voltage regulation point) after the output voltage is increased by a predetermined voltage deviation to the slave power supply, and the slave power supply executes the command of the voltage information, as shown in FIG. 11 Show.

Refer to FIG. 11 , which is a flow chart of commands for executing the voltage information from the power supply according to the embodiment of the present invention.

The process of executing the command of the voltage information from the power supply in the embodiment of the present invention:

Calculation: output voltage from power supply fSlaveOutputVoltage=fFloatVoltage+fVoltageDelta

Main power output voltage fMasterOutputVoltage＝fFloatVoltage

Control the slave power supply output voltage (fSlaveOutputVoltage) through the bus, and then control the main power supply output voltage (fMasterOutputVoltage).

Note: fFloatVoltage: The rated output voltage of the main power supply, which can be set by the user as required. fVoltageDelta: Voltage regulation coefficient of the slave power supply.

The rated output voltage of the slave power supply is the sum of the floating charge voltage and the predetermined voltage deviation (voltage regulation coefficient of the slave power supply). The voltage regulation coefficient of the power supply can be selected, and the user can set it on the interface. The predetermined voltage deviation (voltage regulation coefficient from the power supply) generally ranges from 0.1V to 1.0V, and the default value is 0.5V.

There can be a predetermined voltage deviation between the main power supply and the slave power supply, the output voltage of the slave power supply is higher than the output voltage of the main power supply, and the slave power supply can take priority in loading, so the current automatic distribution between the power modules of the parallel master and slave power supplies can be realized. Achieve the effect of current sharing, so that the load is properly distributed between the power modules of the master and slave power supplies, without parameter adjustment, and automatic adjustment is realized.

S330. The master power supply delivers an output current to the slave power supply, and the slave power supply controls its own output current to be the output current delivered by the master power supply;

S340. The main power supply controls itself to release the output current to the maximum output current. That is, the main power supply controls to release the output current of the main power supply to the maximum output current.

After the step of the main power supply controlling itself to release the output current to the maximum output current, it may also include (not shown in the figure):

S350. The slave power supply reports the output current to the main power supply;

S360. The master power supply compares the output current reported by the slave power supply, and judges whether the last command is executed successfully;

If successful, end; otherwise, according to the difference between the actual output current of the power module of the current slave power supply and the output current sent, the master power supply issues a new output current command again.

When the super-large power supply system detects the sudden unloading of the load, the slave power supply will not perform any control action before receiving the new output current command of the main power supply, and will maintain the original output current of the slave power supply. The main power supply detects that the load has changed, and immediately sends a new output current command to the slave power supply after the calculation of the scheme in Figure 10, so as to keep the system from over-current, and realize the switching between the power modules of the master and slave power supplies through the current sharing control. average flow between

In the case of a sudden load increase, the main power supply can take the newly added load first, and then achieve current sharing through the current sharing scheme.

When the super large power supply system detects the sudden load situation, the output current of the slave power supply has been limited (the output current of the slave power supply is limited by the control of the main power supply), and the output current of the main power supply is limited When the maximum output current is released, the suddenly added load is applied to the main power supply, and then the current sharing between the power modules of the main power supply and the slave power supply is realized through the current sharing control.

Refer to Fig. 7, which is a structural diagram of the monitoring system of the ultra-large power supply system according to the first embodiment of the present invention.

The ultra-large power system monitoring system described in the first embodiment of the present invention is used to monitor the aforementioned ultra-large power system, and the ultra-large power system monitoring system includes:

A monitoring unit 1, configured to monitor the load condition of the super large power supply system;

The first control unit 2 is used to control the main power supply and the slave power supply to be in a floating charging state when the monitoring unit 1 monitors that the super large power supply system is not loaded, and the main power supply and the slave power supply The output current of the power module of the power supply is in the state of maximum output current;

The second control unit 3 is configured to perform current sharing control when the monitoring unit 1 monitors that the super-large power supply system is under load.

Refer to FIG. 8 , which is a structural diagram of the super large power supply system monitoring system according to the second embodiment of the present invention.

The difference between the ultra-large power supply system monitoring system in the second embodiment of the present invention and the first embodiment is that the second control unit 3 includes:

The first calculation subunit 31 obtains the size of the load through the main power supply, and calculates the power of the main power supply and the slave power supply according to the number of power supply modules reported by the slave power supply and the number of power supply modules carried by the main power supply The output current that the module should output;

The first control subunit 32 controls the main power supply to send voltage information after the output voltage of the power module of the main power supply is increased by a predetermined voltage deviation to the slave power supply, and the slave power supply executes the command of the voltage information;

The second control subunit 33 controls the master power supply to deliver an output current to the slave power supply, and the slave power supply controls its own output current to be the output current delivered by the master power supply;

The third control subunit 34 controls the command issued by the main power supply to itself to output current.

The second control unit 3 further includes:

The judging subunit (not shown in the figure), compares the output current reported by the slave power supply by the main power supply, and judges whether the last command was executed successfully; if successful, then end; otherwise notify the fourth control subunit;

The fourth control subunit (not shown in the figure), when the judging subunit judges that the last command was not executed successfully, according to the actual output of the power supply module of the current slave power supply and the output current sent by the main power supply to the slave power supply If there is a difference, the main power supply sends a new output current again.

When the monitoring unit 1 detects the sudden unloading of the load, the second control unit 3 controls and maintains the output current of the slave power supply, and sends the first calculation subunit immediately according to the change of the load detected by the main power supply 31 The calculated new output current is sent to the slave power supply to keep the super large power supply system from flowing, and the current sharing control between the master and slave power supply modules is realized through the current sharing control of the second control unit 3 .

When the monitoring unit 1 detects a sudden load, the output current of the secondary power supply has been limited by the second control unit 3, and the second control unit 3 controls the output current of the main power supply to the maximum output The sudden load is applied to the main power supply, and the current sharing control between the main and slave power supply modules is realized through the current sharing control of the second control unit 3 .

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the methods and technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent of equivalent change Example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (13)

1. a super large power-supply system, is characterized in that, described system comprises:

Main power source and at least one is from power supply;

The positive and negative busbar of described main power source to be describedly connected from the positive and negative busbar of power supply respectively with each;

Described main power source is communicated by bus from power supply with described;

If described super large power-supply system not bringing onto load time, described main power source and be describedly all in floating charge state from power supply, and the output current of described main power source and the described power module from power supply is in maximum output current state;

If during described super large power-supply system bringing onto load, carry out sharing control;

The flow process of described sharing control is:

Described main power source obtains the size of load, according to the described power module number that reports from power supply and described main power source with power module number, calculate the electric current that power module should export;

Information of voltage after output voltage is increased predetermined voltage deviation by the power module of described main power source is sent to described from power supply, the described order performing described information of voltage from power supply;

Described main power source issue output current give described from power supply, described from Energy control self output current be the output current that described main power source issues;

Described main power source controls self to decontrol and outputs current to maximum output current.

2. super large power-supply system according to claim 1, is characterized in that,

Described main power source is provided with battery; Described from power supply without battery.

3. super large power-supply system according to claim 1, is characterized in that, describedly communicates by specifying proprietary protocol from power supply with main power source.

4. super large power-supply system according to claim 1, is characterized in that, described from power supply by the power module number from power supply, from the power module rated current of power supply, output voltage, and alarm status reports described main power source by described bus; Described main power source issues control command to described from power supply by described bus.

5. a super large power-supply system method for supervising, is characterized in that, described method is for monitoring system according to claim 1, and described method comprises:

Monitor described super large power-supply system loading condition;

If described super large power-supply system not bringing onto load time, described main power source and be describedly all in floating charge state from power supply, and the output current of the power module of described main power source and the described power module from power supply is in maximum output current state;

If during described super large power-supply system bringing onto load, carry out sharing control;

Described sharing control comprises the following steps:

Described main power source obtains the size of load, according to the described power module number that reports from power supply and described main power source with power module number, calculate the electric current that power module should export;

Information of voltage after output voltage is increased predetermined voltage deviation by the power module of described main power source is sent to described from power supply, the described order performing described information of voltage from power supply;

Described main power source issue output current give described from power supply, described from Energy control self output current be the output current that described main power source issues;

Described main power source controls self to decontrol and outputs current to maximum output current.

6. super large power-supply system method for supervising according to claim 5, is characterized in that, described main power source comprises after controlling self to decontrol and outputing current to the step of maximum output current:

Described reporting from power supply outputs current to described main power source;

The relatively more described output current reported from power supply of described main power source, in judgement, whether subcommand runs succeeded;

If success, then terminate; Otherwise according to the actual output current of the current power module from power supply with send out the difference of output current, described main power source issues new output current order again.

7. super large power-supply system method for supervising according to claim 5, is characterized in that,

When described system monitoring is to prominent situation of unloading load, control to maintain the described output current from power supply;

Described main power source monitors load and changes, and issues new output current order immediately to described from power supply, keeps described super large power-supply system not overcurrent, the current-sharing between the power module being realized master and slave power supply by described sharing control.

8. super large power-supply system method for supervising according to claim 5, is characterized in that,

When described system monitoring is to the situation of shock load, the output current from power supply is stated in described main power source control limit residence, the output current of described main power source is decontroled to maximum output current, the described load of impact is applied to described main power source, the current-sharing between the power module being realized master and slave power supply by described sharing control.

9. super large power-supply system method for supervising according to claim 5, is characterized in that, described predetermined voltage deviation is 0.1 to 1.0V.

10. a super large power-supply system supervisory control system, is characterized in that, described system is for monitoring super large power-supply system according to claim 1, and described super large power-supply system supervisory control system comprises:

Monitoring means, for monitoring described super large power-supply system loading condition;

First control unit, for monitor at described monitoring means described super large power-supply system not bringing onto load time, control described main power source and be describedly all in floating charge state from power supply, and described main power source and the described power module output current from power supply are in maximum output current state;

Second control unit, during for monitoring described super large power-supply system bringing onto load at described monitoring means, carries out sharing control;

Described second control unit comprises:

First computation subunit, obtains the size of load by described main power source, according to the described power module number that reports from power supply and described main power source institute charged number of modules, calculate the output current that described main power source and the described power module from power supply should export;

First controls subelement, control described main power source the power module output voltage of main power source is increased predetermined voltage deviation after information of voltage be sent to described from power supply, the described order performing described information of voltage from power supply;

Second control subelement, control described main power source issue output current give described from power supply, described from Energy control self output current be the output current that described main power source issues;

3rd controls subelement, controls the order that the output current of main power source provided by described main power source.

11. super large power-supply system supervisory control systems according to claim 10, it is characterized in that, described second control unit comprises further:

Judgment sub-unit, by the relatively more described output current reported from power supply of described main power source, in judgement, whether subcommand runs succeeded; If success, then terminate; Otherwise notify that the 4th controls subelement;

4th controls subelement, when on described judgment sub-unit judges, subcommand does not run succeeded, according to the current power module from power supply actual export and main power source issue the difference of the output current from power supply, described main power source issues new output current again.

12. super large power-supply system supervisory control systems according to claim 10, is characterized in that,

When described monitoring means monitors prominent situation of unloading load, the second control unit controls to maintain the described output current from power supply;

Detect that load changes according to described main power source, issue that described first computation subunit calculates immediately new output current to described from power supply, keep described super large power-supply system not overcurrent, and current-sharing between the power module being realized master and slave power supply by the sharing control of described second control unit.

13. super large power-supply system supervisory control systems according to claim 10, is characterized in that,

When described monitoring means monitors the situation of shock load, the output current from power supply is stated in second control unit control limit residence, second control unit control decontrol described main power source output current to maximum output current, the described load of impact is applied to described main power source, the current-sharing between the power module being realized master and slave power supply by the sharing control of described second control unit.