CN102761423A - Control method of rectifying modules in communication power supply system - Google Patents
Control method of rectifying modules in communication power supply system Download PDFInfo
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Abstract
The invention provides a control method of rectifying modules in a communication power supply system. The control method includes an efficiency control mechanism and/or round robin mechanism. The efficiency control mechanism includes: setting efficiency shutdown load rate and efficiency start-up load rate; and monitoring the number of current operating rectifying modules and current operation load rate of the current operation rectifying modules, and adjusting the number of the operating rectifying modules to lead the rectifying modules to operate in a high efficiency interval. The round robin mechanism includes: setting a standby round robin period or operating round robin period of the rectifying modules; and monitoring standby time or the standby rectifying modules or operating time of the operating rectifying modules, and awaking the standby rectifying modules when judging that standby time of the standby rectifying modules is larger than the standby round robin period or leading the operating rectifying modules to sleep when judging that operating time of the operating rectifying modules is larger than the operating round robin period. Compared with the prior art, the control method ensures that the rectifying modules to operate in the high efficiency interval as far as possible and can prolong operating life cycle of the rectifying modules.
Description
Technical Field
The present invention relates to power supply technologies, and in particular, to a method for managing and controlling a rectifier module in a communication power supply system.
Background
With the rapid development of the communication industry, the energy consumption of the communication industry is increased day by day, the communication industry stands at the wave tip of an air opening for energy conservation and emission reduction, and the energy efficiency becomes an important performance index of a communication product. Currently, various communication power manufacturers mainly strive to develop a high-efficiency power module to replace the low-efficiency power module so as to reduce the operation cost of operators.
According to the general efficiency curve of the existing rectifier module, when the rectifier module works under light load, the working efficiency is lower, and electric energy is seriously wasted; the efficiency is also low during heavy load, and the workload of the existing rectifier module is increased, so that the service life of the rectifier module is influenced.
In general, in a communication power supply system, a relatively large redundancy design is adopted, and the output capacity of a configured rectifier module is larger than the use amount of an actual load, which is to ensure that sufficient capacity is used for charging a battery on one hand, and reserve module backup for future system capacity expansion on the other hand. Therefore, in the actual initial operation of the communication power supply system, the load is generally small, which causes most of the rectifier modules to work in a light-load working state, the current output by each rectifier module is only in a range of 10% -20%, and at this time, the working efficiency of the rectifier modules is low.
The conventional communication power supply system has the following defects:
1. the work efficiency of the rectifier module is improved by hardware, and the cost is high.
2. No proper control means is provided to ensure that the rectifier module keeps high working efficiency operation, so that the rectifier module works in a low-efficiency state for a long time. If the use of partial rectification module is manually withdrawn, other modules bear more output energy, and the working efficiency of the power supply system is improved. Clearly, the benefits of such an operation are evident: the circuit loss of the rectifier module is reduced, the output efficiency of the rectifier module is higher, and the energy is saved; the service life of the rectifier module is prolonged. However, the above operation is manually controlled, and thus has a great disadvantage: because the load change needs human intervention to meet the requirement, the extra workload caused by the human intervention is obviously increased on the occasion that the load is changed frequently.
3. And a polling dormancy operation management mechanism of the rectifying module is lacked, so that the service life of the rectifying module is shortened.
4. Due to the fact that proper rectifier module control management is not available, the rectifier modules are frequently switched, the fault rate of the rectifier modules is increased, and the reliability of the system is reduced.
Disclosure of Invention
The invention aims to provide a control method of a rectifier module in a communication power supply system, which is used for solving the problems of low working efficiency, high energy consumption, short operation life cycle, frequent switching of a switch and the like of the rectifier module.
To solve the above and other problems, the present invention provides a method for controlling a rectifier module in a communication power system, which includes an efficiency control mechanism and/or a round robin mechanism; the efficiency management mechanism comprises: setting an efficiency shutdown load rate and an efficiency startup load rate according to the load rate of the rectification module in the high-output efficiency interval; monitoring the number of the current running rectifier modules and the current running load rate of the current running rectifier modules, and adjusting the number of the running rectifier modules according to the number of the current running rectifier modules so that the rectifier modules run in a high-efficiency interval; the round-robin mechanism includes: setting a standby round-robin period or an operation round-robin period of the rectifying module; monitoring the standby time of the rectifier module in standby or the running time of the rectifier module in running, and waking up the rectifier module in standby when the standby time of the rectifier module in standby is judged to be greater than the standby round robin period or sleeping the rectifier module in running when the running time of the rectifier module in running is judged to be greater than the running round robin period.
Optionally, the communication power supply system includes n rectifier modules in a redundant configuration, where n > 2.
Optionally, the redundancy configuration mode is a Y + X redundancy configuration mode, where Y is the number of the primary rectifier modules and X is the number of the standby rectifier modules; when the number n of the rectifier modules is less than or equal to the number Y of the main rectifier modules, X standby rectifier modules are equipped; when the number n of the rectifier modules is larger than the number Y of the main rectifier modules, each Y of the main rectifier modules is provided with X standby rectifier modules.
Optionally, the efficiency management mechanism comprises:
1) setting an efficiency shutdown load rate LR1 and an efficiency startup load rate LR2 according to the load rate of the rectifier module with the highest output efficiency, wherein the efficiency shutdown load rate LR1 is less than the efficiency startup load rate LR 2; acquiring the minimum running rectification module number N1, the current running rectification module number N and the current running load ratio LR which are reliably run in a communication power supply system;
2) comparing the current operation rectification module number N with the minimum operation rectification module number N1; if the number N of the currently-operated rectifying modules is greater than the minimum number N1 of the currently-operated rectifying modules, proceeding to step 3); if the number N of the currently-operated rectifying modules is less than the minimum number N1 of the currently-operated rectifying modules, then the step 10) is carried out; if the number N of the currently-operated rectifying modules is equal to the minimum number N1 of the currently-operated rectifying modules, proceeding to step 6);
3) judging whether the current operation load rate LR is smaller than the efficiency shutdown load rate LR 1; if yes, proceeding to step 4); otherwise, if not, then go to step 6);
4) predicting whether the running load rate LR3 after sleeping a rectifier module is smaller than the efficiency starting load rate LR 2; if yes, proceeding to step 5); otherwise, if not, returning to the step 1);
5) a rectifier module in sleep operation; then, returning to the step 1);
6) judging whether the current operation load rate LR is greater than the efficiency starting load rate LR 2; if yes, proceeding to step 7); otherwise, if not, returning to the step 1);
7) judging whether the number N of the currently running rectifier modules is less than the number N of the rectifier modules configured in the communication power supply system; if yes, proceeding to step 8); otherwise, if not, returning to the step 1);
8) predicting whether the operation load rate LR4 after waking up a rectifier module is greater than the efficiency shutdown load rate LR 1; if yes, go to step 9); otherwise, if not, returning to the step 1);
9) waking up a rectification module in standby; then, returning to the step 1);
10) waking up a rectification module in standby; then, return to step 1).
Optionally, in step 1), the minimum number of operational rectifier modules N1 for reliable operation of the communication power supply system is obtained by automatic calculation; the automatic calculation mode comprises the following steps:
first, at least the required number of rectifier modules N2 is calculated:
the load current is the current load total current, and the RSI is the rated output current of the rectifier module;
and then according to the redundancy configuration mode, calculating the minimum operation rectification module number N1 for reliable operation in the communication power supply system:
wherein N2 is the number of at least required rectifier modules, Y is the number of the main rectifier modules, and X is the number of the standby rectifier modules;
the current operating load rate LR is calculated by the following formula: LR = LI/(N × RSI), where LI is the current load total current and N is the current number of operating rectifier modules; RSI is the rated output current of the rectifier module.
Optionally, waking up the rectifier module in standby or the rectifier module in sleep operation is performed according to a rule that only one rectifier module in standby or one rectifier module in sleep operation can be woken up each time.
Optionally, the method for managing and controlling the rectifier module further includes: the running time TR (i) of each rectifier module is subjected to accumulated timing; performing accumulated timing on the standby time TS (i) of each rectification module; if one rectification module is awakened, one rectification module with the longest standby time is awakened, the standby time TS (i) of the rectification module is cleared, and the running time TR (i) starts to be timed; and if one rectifying module is dormant, the rectifying module with the longest dormant running time is reset, the running time TR (i) of the rectifying module is cleared, and the standby time TS (i) starts to be timed.
Optionally, the round-robin mechanism includes: a-1, setting a corresponding standby round robin period TC1 for each rectifier module; b-1, monitoring the standby time of a rectifier module in standby; c-1, when the standby time TS (i) of one rectifier module i in standby is judged to be larger than the standby round robin period TC1, awakening the rectifier module with the standby time TS (i) larger than the standby round robin period TC1 in the rectifier module, and sleeping the other running rectifier module; then, returning to the step b-1; or a-2, setting a corresponding running round-robin period TC2 for each rectifier module; b-2, monitoring the running time of a rectifier module in running; c-2, when the running time TR (i) of one running rectifier module i is judged to be greater than the running round-robin period TC2, waking up one standby rectifier module, and sleeping the rectifier module with the running time TR (i) greater than the running round-robin period TC 2; then, return to step b-2.
Optionally, the method for managing and controlling the rectifier module further includes: the running time TR (i) of each rectifier module is subjected to accumulated timing; performing accumulated timing on the standby time TS (i) of each rectification module; when the standby time TS (i) of one rectifier module i in standby is judged to be greater than the standby round robin period TC1, clearing the standby time TS (i) of the awakened rectifier module and starting to time the running time TR (i), and clearing the running time TR (i) of the dormant rectifier module and starting to time the standby time TS (i); or, when the running time TR (i) of one rectifier module i in running is judged to be greater than the running round robin period TC2, clearing the running time TR (i) of the dormant rectifier module and starting to time the standby time TS (i), and clearing the standby time TS (i) of the awakened rectifier module and starting to time the running time TR (i).
Optionally, the method for managing and controlling the rectifier module further includes: if the rectifier module in the wake-up standby state or the rectifier module in the sleep operation state cannot be executed, the command confirmation is retransmitted, and the control failure of the rectifier module is reported under the condition that the rectifier module is not executed after the command confirmation is carried out for several times.
As described above, the present invention provides a method for managing and controlling a rectifier module in a communication power supply system, which has the following advantages:
1. in the efficiency control mechanism of the invention, by setting the efficiency shutdown load rate LR1 and the efficiency startup load rate LR2, the rectifier modules of different specifications can be satisfied, and the optimized efficiency management is performed;
2. in the efficiency control mechanism, the number of the currently-operated rectifier modules and the current operation load rate thereof can be monitored, and the number of the operated rectifier modules can be timely adjusted by awakening the rectifier modules in standby or the rectifier modules in sleep operation, so that the rectifier modules can be ensured to operate in a high-efficiency interval as much as possible, and the problem of light-load low-efficiency work or heavy-load overload work in the prior art is solved;
3. in the efficiency control mechanism, the minimum running module number N1 for reliable running is dynamically calculated according to the reliability requirement and the actual loading condition through an automatic calculation mode, so that the problem that the reliability is reduced due to too small manual setting or the system efficiency cannot reach the optimization due to too large manual setting is solved;
4. in the efficiency control mechanism, when the number of the running rectifier modules is adjusted, an adjustment strategy is determined by a method for predicting the load rate, so that the problem that the rectifier modules are frequently switched between a light load area and a heavy load area in a specific environment is solved;
5. in the invention, a round-robin mechanism is adopted, and round-robin can be implemented on the rectifier modules with overlong standby time or overlong running time, so that all the rectifier modules are in the basically same state, and the running life cycle of the rectifier modules and the service life of the whole communication power supply system are prolonged.
Drawings
Fig. 1 is a block diagram of a communication power supply system to which a method for managing and controlling a rectifier module in the communication power supply system is applied.
Fig. 2 is a schematic flow chart of an efficiency control mechanism in the control method of the rectifier module in the communication power supply system according to the present invention.
FIG. 3 is a flowchart illustrating the sleep aspect of the round-robin scheme of the present invention.
FIG. 4 is a flow chart of the round-robin mechanism of the present invention in terms of round-robin operation.
Detailed Description
The inventors of the present invention found that: in the control management of a rectifier module in the existing communication power supply system, the problems of low working efficiency, high energy consumption, complex control, high cost, short operation life cycle, frequent switching of a switch and the like of the rectifier module exist.
Therefore, the inventor of the invention improves the prior art, provides an efficiency control mechanism and an efficiency control mechanism, and utilizes the efficiency control mechanism to timely adjust the number of the operational rectifier modules by monitoring the number of the operational rectifier modules and the current operational load rate thereof, thereby ensuring that the rectifier modules can operate in a high-efficiency interval as much as possible and avoiding the problem of frequent switching; by utilizing the round-robin dormancy mechanism, the round-robin can be implemented on the rectifier module with too long standby time or too long running time, and the running life cycle of the rectifier module is correspondingly prolonged.
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that the control method of the rectifier module provided by the present invention is applied to a communication power supply system. The communication power supply system can be various communication power supply systems or high-voltage communication power supply systems used in a data room.
Fig. 1 shows a block diagram of a communication power supply system. As shown in fig. 1, the communication power supply system includes: an ac power distribution unit 11 that receives ac input; a rectifier module 12 (including a rectifier module 1#, a rectifier module 2#, a rectifier module n #) connected to the ac power distribution unit 11; a storage battery 21 connected to an output terminal of the rectifier module 12; the input end of the direct current power distribution unit 13 is connected with the rectifying module 12 and the storage battery 21, and the output end of the direct current power distribution unit is externally connected with load equipment 22; a direct current voltage sampling circuit 14 connected to the positive and negative ends of the output end of the rectification module 12; a load current sensor 15 connected to an output terminal of the rectifier module 12; and a communication power supply monitoring unit (MCSU) 16 connected to the dc voltage sampling circuit 14, the load current sensor 15, and the rectifier module 12.
In the invention, n rectifier modules (n is more than 2) in a communication power supply system are configured in a Y + X redundancy configuration mode, wherein Y is the number of main rectifier modules, and X is the number of standby rectifier modules; when the number n of the rectifier modules is less than or equal to the number Y of the main rectifier modules, X standby rectifier modules are equipped; when the number n of the rectifier modules is larger than the number Y of the main rectifier modules, each Y of the main rectifier modules is provided with X standby rectifier modules. The dc voltage sampling circuit 14 is used for sampling the output voltage of the rectifier module 12, and in this embodiment, a voltage dividing resistor network is used for sampling the output voltage of the rectifier module 12. The load current sensor 15 is used to sense the total output current of the rectifier module 12. The communication power supply control unit 16 is configured to perform analog-to-digital conversion on the output voltage of the rectifier module 12 sampled by the dc voltage sampling circuit 14 and the total output current of the rectifier module 12 sensed by the load current sensor 15, send a control instruction to obtain the voltage, the current, the operating state, and the alarm condition of the rectifier module 12, and perform on-off (i.e., wake-up/sleep) control on the rectifier module 12 according to the sampling data of the dc voltage sampling circuit 14 and the sensing data of the load current sensor 15.
The method for managing and controlling the rectifier module in the communication power supply system is mainly characterized in that corresponding on-off control is carried out on the rectifier module according to the actual working condition of the rectifier module in the communication power supply system, so that the rectifier module can operate in a higher working efficiency interval for a long time and the operation life cycle of the rectifier module is prolonged under the condition of ensuring that the reliability of a communication unit system is unchanged. Therefore, the method for managing and controlling the rectifier module in the communication power supply system comprises the following steps: a performance management mechanism and a round robin mechanism. The two control mechanisms can be used independently or in combination.
The following describes a control method of the rectifier module in the communication power supply system in detail.
The efficiency management mechanism comprises: setting an efficiency shutdown load rate and an efficiency startup load rate according to the load rate of the rectification module in the high-output efficiency interval; and monitoring the number of the current running rectifier modules and the current running load rate of the current running rectifier modules, and adjusting the number of the running rectifier modules according to the number so that the rectifier modules run in a high-efficiency interval.
Fig. 2 is a schematic flow chart illustrating an efficiency control mechanism in the control method of the rectifier module in the communication power system according to the present invention. The operation steps of the performance management mechanism are described in detail below with reference to fig. 2.
First, for clarity of description, the following parameters are now defined: suppose that the communication power supply system has N rectifier modules, the number of the rectifier modules in current operation is N, the load factor LR in current rectifier module operation, the total current (including the battery current) LI in current load, and the rated output current RSI of the rectifier module.
First, step 201 is executed to set a performance shutdown load rate LR1 and a performance startup load rate LR2 according to a load rate of the rectifier module with the highest output efficiency, wherein the performance shutdown load rate LR1 is smaller than the performance startup load rate LR 2. Next, step S203 is executed.
Step S203, a minimum number of operational rectifier modules N1, a current number of operational rectifier modules N, and a current operational load rate LR that reliably operate in the communication power supply system are obtained. Next, step S205 is executed;
in the present embodiment: the minimum number of operational rectifier modules N1 for reliable operation of the communication power supply system is obtained by automatic calculation. Specifically, the automatic calculation method includes:
first, at least the required number of rectifier modules N2 is calculated:
the number N2 of the rectifier modules is required to be rounded down, LI is the total current of the current load, and RSI is the rated output current of the rectifier modules;
and then according to the Y + X redundancy configuration mode, calculating the minimum operation rectification module number N1 for reliable operation in the communication power supply system:
wherein, N2 is the number of at least required rectifier modules, Y is the number of active rectifier modules, and X is the number of standby rectifier modules.
By using the automatic calculation method, the minimum operation rectification module number N1 which can reliably operate in the communication power supply system can be obtained. In fact, the minimum number of operational rectifier modules N1 for reliable operation is not limited to automatic calculation, and for example, in other applications, a manual configuration may be used.
In contrast, in the manual configuration, the minimum number of operational rectifier modules N1 for reliable operation can be obtained by the following formula:
wherein n is the total number of the rectifier modules, Y is the number of the main rectifier modules, and X is the number of the standby rectifier modules.
In the embodiment, the minimum number of the operation modules N1 for reliable operation can be dynamically calculated by adopting an automatic calculation mode according to the reliability requirement and the actual loading condition, and compared with a manual configuration mode, the problem that the reliability is reduced due to too small manual setting or the system efficiency cannot reach the optimization due to too large manual setting can be avoided.
In addition, the current operating load rate LR is calculated by the following equation:
LR=LI/(N*RSI)
the current load total current is the current load total current, and the current running number of the rectifier modules is the number of the rectifier modules; RSI is the rated output current of the rectifier module.
Step S205, comparing the current running rectification module number N with the minimum running rectification module number N1; if the number N of currently operating rectification modules is greater than the minimum number N1 of operating rectification modules (N > N1), go to step S207; if the current number N of operational rectification modules is equal to the minimum number N1 of operational rectification modules (N is N1), go to step S213; if the current number of operational rectification modules N is less than the minimum number of operational rectification modules N1 (N < N1), the process proceeds to step S221.
Step S207, determining whether the current operating load rate LR is less than the efficiency shutdown load rate LR 1; if yes, indicating that the current rectifier module operates in a light load area, and proceeding to step S209; otherwise, if not, go to step S213;
step S209, predicting whether the operation load rate LR3 after sleeping one rectifier module is smaller than the efficiency startup load rate LR 2; if yes, go to step S211; otherwise, if not, the process returns to step S203. In this embodiment, step S209 is to determine the adjustment strategy by using the method of predicting the load rate. Specifically, in step S209, when the predicted operating load rate LR3 after sleeping one rectifier module is less than the performance startup load rate LR2, it indicates that the predicted operating load rate LR3 after sleeping one rectifier module is located in the high efficiency interval, and therefore, the step S211 is proceeded to adjust the number of the operating rectifier modules; when the predicted operating load rate LR3 after sleeping one rectifier module is greater than the performance startup load rate LR2, it indicates that the predicted operating load rate LR3 after sleeping one rectifier module jumps from the existing light load zone to the subsequent heavy load zone, and therefore, the number of the existing operating rectifier modules is not adjusted, and the step S203 is returned to, thereby avoiding the problem that the rectifier modules are frequently switched between the light load zone and the heavy load zone in a specific environment.
Step S211, the rectifier module with the longest sleep operation time. Then, the process returns to step S203.
In the present embodiment: the rectifier modules in sleep mode are operated according to the rule that only one rectifier module can be in sleep mode each time. The running time TR (i) of each rectifier module is subjected to accumulated timing; performing accumulated timing on the standby time TS (i) of each rectification module; if one rectifying module is dormant, the rectifying module with the longest dormancy operation time is reset, the operation time TR (i) of the rectifying module is cleared, and the standby time TS (i) starts to be timed.
In practical application: the rectifier module with the longest sleep running time specifically comprises: the longest running time TR (i) in each running time of the currently running rectifier modules is obtained to locate which rectifier module i needs to be dormant, and then the located running rectifier module i is dormant. In addition, if the rectifier module in the sleep operation cannot be executed, the command confirmation is retransmitted, and if the rectifier module is not executed after the command confirmation is carried out for several times, the control failure of the rectifier module is reported.
Step S213, judging whether the current operation load rate LR is greater than the efficiency starting load rate LR 2; if yes, indicating that the current rectifier module operates in the heavy load area, and proceeding to step S215; otherwise, if not, the process returns to step S203.
Step S215, judging whether the number N of the currently running rectifier modules is less than the number N of the rectifier modules configured in the communication power supply system; if yes, go to step S217; otherwise, if not, it indicates that there is no room for increasing the number N of currently operating rectifier modules, and the process returns to step S203.
Step S217, predicting whether the operating load rate LR4 after waking up one rectifier module is greater than the efficiency shutdown load rate LR 1; if yes, go to step S219; otherwise, if not, the process returns to step S203. In this embodiment, step S217 is to determine the adjustment strategy by using the method of predicting the load rate. Specifically, in step S217, when the predicted operating load rate LR4 after waking up one rectifier module is greater than the performance shutdown load rate LR1, it indicates that the predicted operating load rate LR4 after waking up one rectifier module is within the high efficiency interval, and therefore, the step S219 is performed to adjust the number of the operating rectifier modules; when the predicted operation load rate LR4 after waking up one rectifier module is smaller than the efficiency shutdown load rate LR1, it indicates that the operation load rate LR4 after waking up one rectifier module is predicted to jump from the existing heavy load region to the subsequent light load region, so that the number of the existing operation rectifier modules is not adjusted, and the step S203 is returned to, thereby avoiding the problem that the rectifier module is frequently switched between the heavy load region and the light load region in a specific environment.
Step S219, the rectifier module with the longest standby time is awakened. Then, the process returns to step S203.
In the present embodiment: the rectifier modules in the wake-up standby mode are performed according to the rule that only one rectifier module can be woken up each time. The running time TR (i) of each rectifier module is subjected to accumulated timing; performing accumulated timing on the standby time TS (i) of each rectification module; if one rectification module is awakened, one rectification module with the longest standby time is awakened, the standby time TS (i) of the one rectification module is cleared, and the running time TR (i) starts to be timed.
In practical application: the rectification module with the longest wake-up standby time specifically comprises: the longest standby time TS (i) in each standby time of the rectifier modules in the current standby state is obtained firstly to locate which rectifier module i needs to be awakened, and then the located rectifier module i in the standby state is awakened. In addition, if the rectifier module in the wake-up standby state cannot be executed, the command confirmation is retransmitted, and if the rectifier module is not executed after the command confirmation is performed for several times, the failure of the control of the rectifier module is reported.
In step S221, if the number N of currently operating rectifier modules is less than the minimum number N1 of operating rectifier modules, the rectifier module with the longest standby time is awakened. Then, the process returns to step S203.
In the present embodiment: the rectifier modules in the wake-up standby mode are performed according to the rule that only one rectifier module can be woken up each time. The running time TR (i) of each rectifier module is subjected to accumulated timing; performing accumulated timing on the standby time TS (i) of each rectification module; if one rectification module is awakened, one rectification module with the longest standby time is awakened, the standby time TS (i) of the one rectification module is cleared, and the running time TR (i) starts to be timed.
In practical application: the rectification module with the longest wake-up standby time specifically comprises: the longest standby time TS (i) in each standby time of the rectifier modules in the current standby state is obtained firstly to locate which rectifier module i needs to be awakened, and then the located rectifier module i in the standby state is awakened. In addition, if the rectifier module in the wake-up standby state cannot be executed, the command confirmation is retransmitted, and if the rectifier module is not executed after the command confirmation is performed for several times, the failure of the control of the rectifier module is reported.
The control method of the rectifier modules in the communication power supply system further provides a round-robin mechanism to reasonably distribute the working states (dormancy and operation) of the rectifier modules. The round-robin mechanism includes: setting a standby round-robin period or an operation round-robin period of the rectifying module; monitoring the standby time of the rectifier module in standby or the running time of the rectifier module in running, and waking up the rectifier module in standby when judging that the standby time of one rectifier module in standby is greater than the standby round robin period or waking up the rectifier module in standby when judging that the running time of one rectifier module in running is greater than the running round robin period.
Fig. 3 is a flow chart illustrating the sleep aspect of the round-robin scheme of the present invention. As shown in fig. 3, the round robin sleep method includes:
in step S301, a corresponding standby duty cycle TC1 is set for each rectifier module.
Step S303, the standby time of the rectifier module in standby is monitored. In the present embodiment, the standby time ts (i) of each rectifier module is counted up.
Step S305, determining whether the standby time ts (i) of the rectifier module is greater than the standby duty cycle TC1, if yes, proceeding to step S307; otherwise, if not, the process returns to step S303.
In step S307, one of the rectifier modules having a standby time ts (i) longer than the standby duty cycle TC1 is awakened, and the other rectifier module is put to sleep. Then, the process returns to step S303. In the embodiment, when the standby time ts (i) of one rectifier module i in standby is judged to be greater than the standby round robin period TC1, the rectifier module i to be awakened is located, the rectifier module i is awakened, the standby time ts (i) of the awakened rectifier module i is cleared, and the running time tr (i) of the rectifier module i starts to be timed; in addition, the operating time tr (i) of the other rectifier module which is dormant in operation is cleared and the standby time ts (i) is started to be timed.
Fig. 4 is a flow chart showing the round-robin operation of the round-robin mechanism of the present invention. As shown in fig. 3, the round-robin operation method includes:
in step S401, a corresponding running round-robin period TC2 is set for each rectifier module.
Step S403, monitoring the operating time of the rectifier module in operation. In the present embodiment, the operating time tr (i) of each rectifier module is cumulatively counted.
Step S405, judging whether the running time TR (i) of the rectifier module in operation is greater than the running round-robin period TC2, if so, going to step S407; otherwise, if not, the process returns to step S403.
In step S407, one of the rectifier modules in standby mode is awakened, and the other rectifier module whose operation time tr (i) is greater than the operation duty cycle TC2 is put to sleep. Then, the process returns to step S403. In the embodiment, when the running time tr (i) of one rectifier module i in operation is judged to be greater than the running round robin period TC2, the rectifier module i needing to be dormant is located, the rectifier module i is dormant, the running time tr (i) of the dormant rectifier module i is cleared, and the standby time ts (i) is counted; in addition, the standby time ts (i) of the rectifier module that wakes up in standby is cleared and its running time tr (i) is clocked.
It should be noted that, in the above-mentioned flowchart of the round-robin scheme of the present invention shown in fig. 3 and the flowchart of the round-robin scheme of the present invention shown in fig. 4, it can be seen that the steps of the round-robin scheme are: firstly, one rectifier module in the sleep state is awakened, and then one rectifier module in the operation state is in the sleep state. The benefits of this are: the overload of other rectifier modules in operation caused by awakening/sleeping the rectifier modules in cycle can be avoided, and the stable and reliable operation of a communication power supply system is ensured.
The following describes a technical application of the method for controlling a rectifier module according to the present invention in an efficiency control mechanism.
In this embodiment, n rectifier modules (for example, n is 20) are arranged in the communication power supply system, the rated output voltage of the rectifier modules is 270Vdc, the rated output current RSI =20A, and the output efficiency of the rectifier modules is the highest when the load factor is 45% to 75%, so the following settings can be made: the efficiency shutdown load rate LR1 is 45%, the efficiency startup load rate LR2 is 75%, and the sleep cycle period TC1 is =7 days.
If the embodiment is applied to a certain telecom IDC machine room, the Y + X redundancy configuration mode adopts a 10+1 redundancy configuration mode, and when the number n of the rectifier modules is less than or equal to 10, 1 standby rectifier module is provided; when the number n of the rectifier modules is more than 10, 1 standby rectifier module is equipped for every 10 main rectifier modules. In this embodiment, n is 20, and thus, 1 standby rectifier module is provided for every 10 main rectifier modules.
A. Minimum number of running modules N1 configuration:
1) in an automatic calculation mode:
first, at least the required number of rectifier modules N2 is calculated,
secondly, according to the redundancy configuration mode, the minimum operation rectification module number N1 for reliable operation in the communication power supply system is calculated,
for example: when LI =90A, N2=5, N1= 6;
when LI =290A, N2=15, N1= 17.
2) In the manual configuration mode:
for example: when N =20, it is recommended to set N1= 3. In practical application, the minimum number of the operational rectification modules N1 can be set according to the needs.
3) When the minimum running rectification module number N1 is less than 2, N1= 2; when the minimum number of operational rectifier modules N1 > N, N1= N.
B. And (3) operating an adjustment strategy of the number of the rectification modules:
the current rectifier module operating load rate LR = LI/(N × RSI);
predicting an operating load rate LR3= LI/((N-1) × RSI) after sleeping a rectifier module;
predicting an operating load rate LR4= LI/((N +1) × RSI) after waking up a rectifier module;
if LR < LR1, LR3 < LR2, and N > N1, the rectifier modules with the longest sleep operation time are arranged one by one. For example: currently N =20, LI =90A, then: the current rectifier module operation load rate LR = LI/(N × RSI) =90/(20 × 20) =0.225=22.5%, which is calculated by adopting an automatic calculation mode
Therefore, the rectifier module with the longest operation time in sleep operation is started until N =10, and then LR = LI/(N × RSI) =90/(10 × 20) =0.45=45% = LR 1. In contrast, assuming that the minimum number of operational rectifier modules N1=11 set in the manual mode is used, the rectifier modules having the longest operational time will be put to sleep one by one until N =11, and at this time, the operational rectifier modules cannot be put to sleep continuously because N = N1 although LR is 40.9% < LR 1. Therefore, the minimum number of the operation modules N1 which can operate reliably can be dynamically calculated by adopting the automatic calculation mode according to the reliability requirement and the actual loading condition, and compared with a manual configuration mode, the problem that the reliability is reduced due to too small manual setting or the system efficiency cannot reach the optimization due to too large manual setting can be avoided.
If LR is greater than LR2, LR4 is greater than LR1, and N1 is greater than or equal to N and less than N, the rectification modules with the longest standby time are awakened one by one. For example: current N =11, LI =190A, then: the current rectifier module operation load rate LR = LI/(N × RSI) =190/(11 × 20) =0.864=86.4%, which is calculated by adopting an automatic calculation mode
Therefore, the rectifier modules with the longest standby time in standby are awakened one by one until N =13, at which time LR = LI/(N × RSI) =190/(13 × 20) =0.731=73.1% < LR2= 75%.
If N is less than N1, awakening the rectification modules with the longest standby time one by one until N is more than or equal to N1. For example: LI =90A, if N1=6 is calculated in the automatic calculation mode, N must be 6 or more.
C. The rectification module round-robin dormancy control step:
if the standby time TS (i) of the rectifier module i is greater than the sleep round-robin period TC1, waking up the rectifier module i in standby. For example: if the standby time TS (i) =7.1 days > the sleep round robin period TC1=7 days, the rectifier module i in standby is awakened, the standby time TS (i) of the rectifier module i is cleared, and the running time TR (i) starts to be timed; in addition, still include: the other rectifier module in operation is put to sleep, the operation time TR (i) of the other rectifier module in sleep is cleared, and the standby time TS (i) is started to be timed.
In summary, the present invention provides a method for controlling a rectifier module in a communication power supply system, which has the following advantages:
1. in the efficiency control mechanism of the invention, by setting the efficiency shutdown load rate LR1 and the efficiency startup load rate LR2, the rectifier modules of different specifications can be satisfied, and the optimized efficiency management is performed;
2. in the efficiency control mechanism, the number of the currently-operated rectifier modules and the current operation load rate thereof can be monitored, and the number of the operated rectifier modules can be timely adjusted by awakening the rectifier modules in standby or the rectifier modules in sleep operation, so that the rectifier modules can be ensured to operate in a high-efficiency interval as much as possible, and the problem of light-load low-efficiency work or heavy-load overload work in the prior art is solved;
3. in the efficiency control mechanism, the minimum running module number N1 of the system is dynamically calculated according to the reliability requirement and the actual loading condition through an automatic calculation mode, so that the problem that the reliability is reduced due to too small manual setting or the system efficiency cannot reach the optimization due to too large manual setting is avoided;
4. in the efficiency control mechanism, when the number of the running rectifier modules is adjusted, an adjustment strategy is determined by a method for predicting the load rate, so that the problem that the rectifier modules are frequently switched between a light load area and a heavy load area in a specific environment is solved;
5. in the invention, a round-robin mechanism is adopted, and the round-robin can be implemented on the rectifier modules with overlong standby time or overlong running time, so that all the rectifier modules are in the basically same state, and the running life cycle of the rectifier modules and the service life of the whole communication power supply system are prolonged.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A control method for a rectifier module in a communication power supply system is characterized in that:
the control method comprises an efficiency control mechanism and/or a round robin mechanism;
the efficiency management mechanism comprises:
setting an efficiency shutdown load rate and an efficiency startup load rate according to the load rate of the rectification module in the high-output efficiency interval;
monitoring the number of the current running rectifier modules and the current running load rate of the current running rectifier modules, and adjusting the number of the running rectifier modules according to the number of the current running rectifier modules so that the rectifier modules run in a high-efficiency interval;
the round-robin mechanism includes:
setting a standby round-robin period or an operation round-robin period of the rectifying module;
monitoring the standby time of the rectifier module in standby or the running time of the rectifier module in running, and waking up the rectifier module in standby when the standby time of the rectifier module in standby is judged to be greater than the standby round robin period or sleeping the rectifier module in running when the running time of the rectifier module in running is judged to be greater than the running round robin period.
2. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 1, wherein the communication power supply system comprises n rectifier modules in a redundant configuration mode, wherein n > 2.
3. The management and control method for the rectifier modules in the communication power supply system according to claim 2, characterized in that the redundancy configuration mode is a Y + X redundancy configuration mode, wherein Y is the number of the primary rectifier modules and X is the number of the standby rectifier modules; when the number n of the rectifier modules is less than or equal to the number Y of the main rectifier modules, X standby rectifier modules are equipped; when the number n of the rectifier modules is larger than the number Y of the main rectifier modules, each Y of the main rectifier modules is provided with X standby rectifier modules.
4. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 2, wherein the performance management and control mechanism comprises:
1) setting an efficiency shutdown load rate LR1 and an efficiency startup load rate LR2 according to the load rate of the rectifier module with the highest output efficiency, wherein the efficiency shutdown load rate LR1 is less than the efficiency startup load rate LR 2; acquiring the minimum running rectification module number N1, the current running rectification module number N and the current running load ratio LR which are reliably run in a communication power supply system;
2) comparing the current operation rectification module number N with the minimum operation rectification module number N1; if the number N of the currently-operated rectifying modules is greater than the minimum number N1 of the currently-operated rectifying modules, proceeding to step 3); if the number N of the currently-operated rectifying modules is less than the minimum number N1 of the currently-operated rectifying modules, then the step 10) is carried out; if the number N of the currently-operated rectifying modules is equal to the minimum number N1 of the currently-operated rectifying modules, proceeding to step 6);
3) judging whether the current operation load rate LR is smaller than the efficiency shutdown load rate LR 1; if yes, proceeding to step 4);
otherwise, if not, then go to step 6);
4) predicting whether the running load rate LR3 after sleeping a rectifier module is smaller than the efficiency starting load rate LR 2; if yes, proceeding to step 5); otherwise, if not, returning to the step 1);
5) a rectifier module in sleep operation; then, returning to the step 1);
6) judging whether the current operation load rate LR is greater than the efficiency starting load rate LR 2; if yes, proceeding to step 7);
otherwise, if not, returning to the step 1);
7) judging whether the number N of the currently running rectifier modules is less than the number N of the rectifier modules configured in the communication power supply system; if yes, proceeding to step 8); otherwise, if not, returning to the step 1);
8) predicting whether the operation load rate LR4 after waking up a rectifier module is greater than the efficiency shutdown load rate LR 1; if yes, go to step 9); otherwise, if not, returning to the step 1);
9) waking up a rectification module in standby; then, returning to the step 1);
10) waking up a rectification module in standby; then, return to step 1).
5. The method for managing and controlling rectifier modules in a communication power supply system according to claim 4, wherein in step 1), the minimum number of operational rectifier modules N1 for reliable operation of the communication power supply system is obtained by automatic calculation; the automatic calculation mode comprises the following steps:
first, at least the required number of rectifier modules N2 is calculated:
the load current is the current load total current, and the RSI is the rated output current of the rectifier module;
and then according to the redundancy configuration mode, calculating the minimum operation rectification module number N1 for reliable operation in the communication power supply system:
wherein N2 is the number of at least required rectifier modules, Y is the number of the main rectifier modules, and X is the number of the standby rectifier modules;
the current operating load rate LR is calculated by the following formula:
LR=LI/(N*RSI)
the current load total current is the current load total current, and the current running number of the rectifier modules is the number of the rectifier modules; RSI is the rated output current of the rectifier module.
6. The method for managing and controlling rectifier modules in a communication power supply system according to claim 4 or 5, wherein waking up a rectifier module in standby or a rectifier module in sleep operation is performed according to a rule that only one rectifier module in standby or one rectifier module in sleep operation can be woken up each time.
7. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 6, further comprising:
the running time TR (i) of each rectifier module is subjected to accumulated timing;
performing accumulated timing on the standby time TS (i) of each rectification module;
if one rectification module is awakened, one rectification module with the longest standby time is awakened, the standby time TS (i) of the rectification module is cleared, and the running time TR (i) starts to be timed;
and if one rectifying module is dormant, the rectifying module with the longest dormant running time is reset, the running time TR (i) of the rectifying module is cleared, and the standby time TS (i) starts to be timed.
8. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 2, wherein the round-robin mechanism comprises:
a-1, setting a corresponding standby round robin period TC1 for each rectifier module;
b-1, monitoring the standby time of a rectifier module in standby;
c-1, when the standby time TS (i) of one rectifier module i in standby is judged to be larger than the standby round robin period TC1, awakening the rectifier module with the standby time TS (i) larger than the standby round robin period TC1 in the rectifier module, and sleeping the other running rectifier module; then, returning to the step b-1;
or,
a-2, setting a corresponding running round-robin period TC2 for each rectifier module;
b-2, monitoring the running time of a rectifier module in running;
c-2, when the running time TR (i) of one running rectifier module i is judged to be greater than the running round-robin period TC2, waking up one standby rectifier module, and sleeping the rectifier module with the running time TR (i) greater than the running round-robin period TC 2; then, return to step b-2.
9. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 8, further comprising:
the running time TR (i) of each rectifier module is subjected to accumulated timing;
performing accumulated timing on the standby time TS (i) of each rectification module;
when the standby time TS (i) of one rectifier module i in standby is judged to be greater than the standby round robin period TC1, clearing the standby time TS (i) of the awakened rectifier module and starting to time the running time TR (i), and clearing the running time TR (i) of the dormant rectifier module and starting to time the standby time TS (i); or, when the running time TR (i) of one rectifier module i in running is judged to be greater than the running round robin period TC2, clearing the running time TR (i) of the dormant rectifier module and starting to time the standby time TS (i), and clearing the standby time TS (i) of the awakened rectifier module and starting to time the running time TR (i).
10. The method for managing and controlling the rectifier modules in the communication power supply system according to claim 4 or 8, further comprising: if the rectifier module in the wake-up standby state or the rectifier module in the sleep operation state cannot be executed, the command confirmation is retransmitted, and the control failure of the rectifier module is reported under the condition that the rectifier module is not executed after the command confirmation is carried out for several times.
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