CN114362343A - Power distribution control device, system and method - Google Patents
Power distribution control device, system and method Download PDFInfo
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- CN114362343A CN114362343A CN202111622573.4A CN202111622573A CN114362343A CN 114362343 A CN114362343 A CN 114362343A CN 202111622573 A CN202111622573 A CN 202111622573A CN 114362343 A CN114362343 A CN 114362343A
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Abstract
A power distribution control device, a power distribution control system and a power distribution control method relate to the technical field of power supply systems, and the device comprises: comprises three pairs of buses and an on-off control component; each pair of buses is powered by different paths of commercial power circuits, each bus in each pair of buses is electrically connected with one bus in the other pair of buses, and the two buses connected to the same pair of buses do not belong to the same pair of buses; the on-off control component is electrically connected with the bus and comprises a first on-off control component, a second on-off control component, a third on-off control component and a fourth on-off control component. According to the invention, three mains supplies are introduced, and two sections of buses are hung under each mains supply, so that the three mains supplies are mutually standby in pairs, and the average utilization rate of power resources is improved on the premise of not reducing the operation safety of a power supply system.
Description
Technical Field
The embodiment of the invention relates to the technical field of power supply systems, in particular to a power distribution control device, a power distribution control system and a power distribution control method.
Background
At present, a conventional mains supply circuit usually adopts a 1+1 redundant technical scheme with an additional generator, as shown in fig. 1, in a normal state, only one section of bus is hung under each mains supply circuit, if a first-path mains supply circuit fails, a second-path mains supply circuit provides electric energy for a first-path mains supply circuit load through an interconnection switch, if a second-path mains supply circuit fails, the first-path mains supply circuit provides electric energy for the second-path mains supply circuit load through the interconnection switch, and if the first-path mains supply circuit and the second-path mains supply circuit fail simultaneously, the generator provides electric energy for the first-path mains supply circuit and the second-path mains supply circuit load.
Therefore, the average utilization rate of each line of the commercial power circuit under the technical scheme must be controlled below 50%, otherwise, when another line of the commercial power circuit fails and cannot supply power, a problem occurs due to excess load, and therefore, how to improve the average utilization rate of each line of the commercial power circuit on the premise of not reducing the operation safety of a power supply system is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a power distribution control device, a power distribution control system and a power distribution control method.
In a first aspect, the invention provides a power distribution control device, comprising three pairs of buses and an on-off control component; wherein the content of the first and second substances,
each pair of buses is powered by different paths of commercial power circuits, each bus in each pair of buses is electrically connected with one bus in the other pair of buses, and two buses connected to the same pair of buses do not belong to the same pair of buses;
the on-off control component is electrically connected with the bus and comprises a first on-off control component, a second on-off control component, a third on-off control component and a fourth on-off control component;
the first on-off control component is used for controlling the connection between the bus and the mains supply circuit for supplying power;
the second on-off control component is used for controlling the circuit connection between the bus and the bus;
the third on-off control component is used for controlling the circuit connection between the bus and the generator;
and the fourth breaking control component is used for controlling the circuit connection between the bus and the load.
In some embodiments, the on-off control component is specifically: any one or more of a circuit breaker and a power control switch.
In some embodiments, the bus-bar switching device further includes a control unit, connected to the on-off control components, and configured to control the on-off states of the on-off control components according to the power supply conditions of the mains circuits on different paths, so that at most one power supply power of the bus bar at any time is available.
In some embodiments, the control unit is further configured to monitor an operating state of a line in which the on-off control component is located.
In a second aspect, the present invention provides a power distribution control system, including the apparatus of the first aspect, further including: a generator for providing electrical power.
In some embodiments, the number of generators is N, where N is an integer greater than or equal to 1.
In some embodiments, the sum of the power of the loads mounted under each pair of busbars is balanced with each other.
In some embodiments, the loads have three groups, each group of the loads respectively transmitting power by two bus bars connected by the second on-off control member.
In a third aspect, the present invention provides a power distribution control method, which employs the system of any one of the second aspect, and the method includes:
if the normal power supply of all the buses is changed into the condition that one pair of buses cannot transmit power, the other two pairs of buses transmit power to the pair of buses which cannot transmit power through the second on-off control parts respectively;
if the normal power supply of all the buses is changed into the condition that two pairs of buses cannot transmit power, the generator is started, and the generator and the other pair of buses which can transmit power jointly transmit power for the two pairs of buses which cannot transmit power;
and if the normal power supply of all the buses is changed into that the three pairs of buses cannot transmit power, starting the generator, and providing power for the three pairs of buses by the generator through the third on-off control part.
In some embodiments, the method comprises:
if the three pairs of buses cannot transmit power, the three pairs of buses are changed into the state that the one pair of buses recovers power transmission, and the generator continues to supply power to the two pairs of buses which do not recover power transmission;
if the three pairs of buses cannot transmit power, after the power transmission is restored by one pair of buses, the power transmission of the other pair of buses is restored, the two pairs of buses which have been restored to the power transmission supply power to the other pair of buses which cannot transmit power together through the second on-off control component;
if the three pairs of buses cannot transmit electric power, the three pairs of buses are changed into two pairs of buses which resume power transmission, and the two pairs of buses which resume power transmission respectively transmit electric power for the pair of buses which cannot transmit electric power through the second on-off control component; if the two pairs of buses cannot transmit power, the power transmission is changed to be recovered by one pair of buses, and the other two pairs of buses capable of transmitting power transmit power for the buses incapable of transmitting power through the second on-off control parts;
if one pair of buses cannot transmit power, the utility power circuit where the pair of buses are located is changed to recover power transmission, and after the other two pairs of buses transmitting power are respectively disconnected from the second on-off control parts of the pair of buses, the power transmission of the pair of buses is recovered.
According to the technical scheme of the embodiment of the invention, two buses are hung under each commercial power, and the two commercial powers are connected with one bus of the other commercial power through the second on-off control component, so that two commercial powers of three paths are mutually redundant and spare, when a certain commercial circuit cannot supply power, the other two commercial powers supply the power, the average load carried by the technical scheme is at most 67% of the capacity of the current commercial power circuit, compared with 50% in the prior art, the average utilization rate of power resources can be improved on the premise of not reducing the operation safety of a power supply system.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram of a power distribution system of the prior art.
Fig. 2 is a schematic diagram of a power distribution control apparatus and a system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the state and sequence of the relevant on-off control component when the scene 1 is changed to the scene 3 according to the embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a state and a sequence of related on-off control components when the scene 1 is changed to the scene 10 according to the embodiment of the present invention.
Fig. 5 is a schematic diagram of the state and sequence of the relevant on-off control component when the scene 1 is changed to the scene 11 according to the embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating the state and sequence of the relevant on-off control components when the scene 11 is changed to the scene 13 according to the embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating the state and sequence of the relevant on-off control component when the scene 13 is changed to the scene 4 according to the embodiment of the present invention.
Fig. 8 is a schematic diagram of the state and sequence of the relevant on-off control component when the scene 11 is changed to the scene 3 according to the embodiment of the present invention.
Fig. 9 is a schematic diagram illustrating the state and sequence of the relevant on-off control component when the scene 7 is changed to the scene 4 according to the embodiment of the present invention.
Fig. 10 is a schematic diagram illustrating the state and sequence of the relevant on-off control component when the scene 3 is changed to the scene 1 according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It is to be understood that the terms first, second, and the like in the description of the embodiments of the invention are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.
At present, a traditional mains supply circuit usually adopts a redundancy technical scheme of 1+1 and additionally adding a generator, as shown in fig. 1, wherein L1 and L2 represent two buses, FK1 and FK2 represent control switches of the generator and the two buses, K1-2 represents a tie switch of the bus 1 connected with the bus 2, only one section of bus is mounted under each mains supply circuit in a normal state, that is, K1-2 is in an off state, a first-path mains supply circuit normally provides power for the bus L1 through a switch K1, and a second-path mains supply circuit normally provides power for the bus L2 through a switch K2.
If the first line of commercial power circuit is in fault, the second line of commercial power circuit supplies electric energy to the first line of commercial power circuit load through the interconnection switch, namely, if the first line of commercial power circuit cannot supply electric power to the bus L1, the K1 is disconnected at the moment, and the K1-2 is conducted, and the second line of commercial power circuit supplies electric power to the bus L1 through the K1-2 while supplying electric power to the bus L2; if the second commercial power circuit fails, the first commercial power circuit supplies electric energy to the load of the second commercial power circuit through the interconnection switch, namely if the second commercial power circuit cannot supply electric power to the bus L2, the K2 is switched off, and the K1-2 is switched on, and the first commercial power circuit supplies electric power to the bus L1 and simultaneously supplies electric power to the bus L2 through the K1-2; if the first commercial circuit and the second commercial circuit are failed at the same time, the generator provides electric energy for loads of the first commercial circuit and the second commercial circuit, namely, if the first commercial circuit and the second commercial circuit can not provide electric power, the switches K1 and K2 are switched off, the generator is started, the switches FK1 and FK2 are switched on, and at the moment, the generator provides electric power for the buses L1 and L2.
According to the technical scheme, when two commercial power circuits work normally, the average load of each commercial power circuit is only 50% of the current commercial power circuit at most, namely the average utilization rate of one commercial power circuit needs to be controlled below 50% and cannot be increased, otherwise, when the other commercial power circuit is abnormal, the current commercial power circuit cannot provide enough loading capacity for the other commercial power circuit, uncontrollable abnormity is generated, and safety problems occur.
Therefore, how to improve the utility of the utility power on the premise of ensuring the safety of the circuit is a technical problem to be solved at present.
In order to solve the technical problem, an embodiment of the present invention provides a power distribution control device, including three pairs of buses and an on-off control component; wherein the content of the first and second substances,
each pair of buses is powered by different paths of commercial power circuits, each bus in each pair of buses is electrically connected with one bus in the other pair of buses, and two buses connected to the same pair of buses do not belong to the same pair of buses;
the on-off control component is electrically connected with the bus and comprises a first on-off control component, a second on-off control component, a third on-off control component and a fourth on-off control component;
the first on-off control component is used for controlling the connection of the bus and a mains supply circuit for supplying power;
a second on-off control part for controlling the circuit connection between the bus bar and the bus bar;
the third on-off control component is used for controlling the circuit connection between the bus and the generator;
and the fourth breaking control component is used for controlling the circuit connection between the bus and the load.
The following is illustrated by way of specific examples, with reference to fig. 2.
In the figure, L1-L6 respectively represent 6 buses, K represents an on-off control component, the number after K represents the number of the bus connected with the bus, the number after K represents the serial number of the on-off control component, if the number after K has three digits, the middle digit is 2, the second on-off control component between the buses is represented, and the first digit and the third digit represent the number of the buses connected with each other.
The three pairs of buses are respectively L1-L2, L3-L4 and L5-L6, the paired buses are supplied with power by three different paths of mains circuits, and respectively serve as a first path of mains circuit, a second path of mains circuit and a third path of mains circuit, the paired buses are supplied with power, each bus in each pair of buses is electrically connected with one bus in the other pair of buses, and two buses connected to the same pair of buses do not belong to the same pair of buses, namely, the bus L1 is connected with the bus L6 through a second on-off control component K1-2-6, the L1 and the L6 do not belong to the same pair of buses, and for example, the bus L2 is connected with the bus L3 through the second on-off control component K2-2-3, the buses L2 and the L3 do not belong to the same pair of buses, and the rest are not listed again, and a person skilled in the art can read information from fig. 2.
Taking the bus L1 as an example, the on-off control component K is electrically connected with the bus L1 and comprises a first on-off control component K1-1, a second on-off control component K1-2-6, a third on-off control component K1-3 and a fourth on-off control component K1-4; taking a bus L1 as an example, the first on-off control component K1-1 is used for controlling the connection between the bus L1 and a first path of mains supply circuit for supplying power; a second on-off control part K1-2-6 for controlling the circuit connection between the bus bar L1 and the bus bar L6; the third on-off control component K1-3 is used for controlling the circuit connection between the bus L1 and the generator; and the fourth breaking control component K1-4 is used for controlling the circuit connection between the bus L1 and the load. The remaining bus bars L2-L6 are connected in the same manner as the bus bar L1 and are not listed here.
According to the technical scheme, two buses are hung under each commercial power, and the two commercial powers are connected with one bus of the other commercial power through the second on-off control component, so that the three commercial powers are redundant and standby, when a certain commercial circuit cannot supply power, the other two commercial powers supply the commercial power, the technical scheme enables the average load to be 67% of the capacity of the current commercial power circuit at most, and compared with the prior art, the average utilization rate of power resources is improved on the premise of not reducing the operation safety of a power supply system, and the power supply system is safe to operate.
The working mode and the mode of calculating the utilization rate are as follows, when one of the two paths of circuits fails or cannot supply power due to other reasons, taking the power failure of the first path of commercial power circuit as an example, then the first on-off component K1-1 of the bus L1 is switched off, the second on-off control component K1-2-6 is switched on, the bus L1 of the first path of commercial power circuit obtains power through the second on-off control component K1-2-6, and the third path of commercial power circuit supplies power for the bus L1; the first on-off component K2-1 of the bus L2 is disconnected, the second on-off component K2-2-3 is connected, the bus L2 of the first path of commercial power circuit obtains power through the second on-off control component K2-2-3, and the second path of commercial power circuit supplies power to the bus L2. The purpose of disconnecting the first on-off control component K1-1 and the first on-off control component K2-1 and then connecting the second on-off control component K1-2-6 and the second on-off control component K2-2-3 is to prevent the first path of mains supply from suddenly recovering power supply, and the bus L1 and the bus L2 are respectively powered by the third path of mains supply circuit and the second path of mains supply circuit at the moment so that the bus has two power supply powers to cause abnormity, and only one power of each bus is required to be supplied at any moment. That is, when one of the two commercial power circuits cannot supply power, that is, one pair of buses on which one commercial power circuit is mounted cannot transmit power, the other two pairs of buses transmit power to the pair of buses that cannot transmit power through the respective second on-off control components.
If two commercial power circuits in the two commercial power circuits are in fault, a first commercial power circuit and a second commercial power circuit are simultaneously in fault, and after a bus L1, a bus L2, a bus L3 and a first on-off control part K1-1, a first on-off control part K2-1, a first on-off control part K3-4 and a first on-off control part K4-1 hung on the two commercial power circuits are disconnected, the generator is started; the second technical scheme is that a third commercial power circuit supplies power to a bus L1 of the first commercial power circuit through a second on-off control component K1-2-6 of a bus L6, the bus L2, the bus L3, a third on-off component K2-3, a third on-off component K3-3 and a third on-off component K4-3 of a bus L4 are turned on, and a generator supplies power to the bus L2, the bus L3 and the bus L4; that is to say, when two-way mains supply circuit breaks down, the generator starts, and the generator and another pair of buses capable of transmitting power transmit power for two pairs of buses incapable of transmitting power together.
If the three mains supply circuits simultaneously have faults, the first on-off control components K1-1, K2-1, K3-1, K4-1, K5-1 and K6-1 of all the buses are closed, the generator is started, all the fourth pass-section components K1-3, K2-3, K3-3, K4-3, K5-3 and K6-3 are started, the generator replaces all the mains supply circuits to provide power for all the buses, namely, if all the three pairs of buses cannot transmit power, the generator is started, and the generator provides power for the three pairs of buses through the third on-off control component.
It can be seen that, when an abnormality occurs in any one of the commercial power circuits, three buses are hung at most, that is, each bus needs to share 1/3 of the total capacity of the current single-line commercial power circuit in full load, so that in daily practical use, two buses should share 2/3 of the total capacity of the previous single-line commercial power circuit at most, and the rest 1/3 capacity is used as a backup, even if an abnormality occurs, the power of the load hung under another bus can be rapidly borne, so that the current commercial power circuit cannot run in an overload manner, and the safety of the power supply system is further ensured, therefore, the technical scheme enables the average load carried at most at ordinary times to be 67% of the capacity of the current commercial power circuit, compared with 50% in the prior art, 17% is improved, and an enough safety guarantee mechanism is provided, so that the abnormality of each commercial power circuit can be safely handled, the reliability is high, has promoted commercial power resource utilization ratio.
Optionally, as one embodiment, the on-off control component specifically includes: any one or more of a circuit breaker and a power control switch. The on-off component can be various switches, such as a commonly used circuit breaker and the like, the circuit breaker can be controlled manually or by a circuit, and the circuit breaker can also be a circuit breaker with special purposes, such as a current-limiting circuit breaker and the like, so that the circuit breaker can be used for switching among circuits, can also protect the current circuit from overload, and can prevent various safety problems caused by overload; of course, the on-off control component can also be a power control switch, such as a remote power control switch, and the like, and can be used for switching between circuits, and can also be matched with intelligent management and control to realize automatic switching control on the circuits through a computer network.
Optionally, as an embodiment, the power supply system further includes a control unit connected to the on-off control unit, and configured to control the on-off state of each on-off control unit according to power supply conditions of the mains circuits on different paths, so that power supply power of the bus at any time is supplied by one of the mains circuits or by the generator.
The control unit can be electrically connected with the on-off control components, can also be connected through a network or other forms, and only needs to control the on-off state of each on-off control component according to the power supply conditions of the commercial power circuits on different paths, so that the power supply power of the bus at any time is only one at most.
If each on-off control component is a circuit breaker, the control unit can be a PLC control circuit, the control unit is electrically connected with the circuit breakers, whether the state of each circuit breaker is on or off is judged by collecting switching signals of each circuit breaker, circuit signals of each mains supply circuit are collected to judge whether power supply abnormality occurs in each mains supply circuit, if the power supply abnormality occurs, a control signal representing the switching state of each circuit breaker is sent to control each circuit breaker, and power supply electric power of a bus at any moment is ensured to be supplied by one mains supply or a generator.
If each on-off control component is a remote power control switch, the remote power control switch can detect the state of the current circuit and/or the state of current and the like and can report the information, the reported information also comprises self state information and the like, the control unit can be a server, a central control room and various control equipment, more specifically, the control unit can be a power management program and the like running in a computer, the on-off state of the power control switch and the running state of the circuit where the power control switch is located are judged by acquiring the information reported to the server by the remote power control switch, and a control signal representing the state of each remote power control switch is sent to control each remote control switch according to the state of each mains supply circuit.
When the commercial power circuit breaks down, the control unit controls the on-off state, namely the on-off state, of each on-off control component according to whether the power supply condition of different commercial power circuits can supply power or cannot supply power, and the fact that the power supply power of the bus at any moment is only one at most is determined.
Optionally, as an embodiment, the control unit is further configured to monitor a working state of a line in which the on-off control component is located.
The intelligent devices at present have various functions, such as the remote power control switch can detect the current condition of the current circuit, the current can be detected, the current working state of the on-off circuit can be judged according to the current, therefore, the control unit can monitor the working state of the circuit of the on-off control component through the detection of the current circuit of the remote power control switch, and also can monitor other devices which are positioned in the same circuit with the device of the on-off control component, such as current and voltage detection devices, to monitor the working state of the circuit on which the on-off control component is positioned, whether the working state of the circuit where the on-off control component is located changes unexpectedly is determined by monitoring the working state of the circuit where the on-off control component is located, and then the next action is determined, so that intelligent control is achieved.
Optionally, as an embodiment, there is further provided a power distribution control system, including the power distribution control apparatus provided in any of the above examples, further including: a generator for providing electrical power. The number of the motors is N, and N is an integer greater than or equal to 1.
When two mains supply circuits are in fault and cannot provide power for the hanging-down bus, the generator needs to be started to provide power supplement for the current circuit, optionally, the power of the generator is close to the capacity of a certain one of the mains supply circuits, so that the current circuit can be matched, the number of the generators can be N, N is an integer greater than or equal to 1, namely, the generators with reasonable number are matched according to the current circuit condition, so that when all the mains supply circuits cannot supply power, the generators can still provide enough power to enable the hanging load of all the buses to work normally.
Optionally, as an embodiment, the sum of the power of the loads mounted under each pair of buses is balanced with each other. That is, the capacities of the respective mains circuits are balanced with each other. In practice, the power of the load hung below each bus bar can be dynamically changed at every moment, and when the capacities of the mains circuits are balanced, if the power cannot be supplied, any one or any one of the generators can supply power to the power distribution control system according to the matched capacity of the generator, so that the safety of the power distribution control system is improved.
Alternatively, as one of the embodiments, the loads have three groups, and each group of loads transmits power by two buses connected through the second on-off control member, respectively.
The following description will be made by specific examples.
See figure 2. The loads are divided into three groups, namely a load 1, a load 2 and a load 3, wherein each group of loads is respectively transmitted with power by two buses L1-L6, L2-L3 and L4-L5 which are connected through a second on-off control component K1-2-6, a second on-off control component K2-2-3 and a second on-off control component K4-2-5, namely the load A is divided into the loads 1A and 1B, the load 1A is provided with power by a bus L6, the load 1B is provided with power by a bus L1, the load 2 is divided into the loads 2A and 2B, the load 2A is provided with power by a bus L2, the load 2B is provided with power by a bus L3, the load 3 is divided into the loads 3A and 3B, the load 3A is provided with power by a bus L5, and the load 3B is provided with power by a bus L4. In practice, the load is usually multiple, the same group of loads is powered by two mains circuits respectively, such as various sockets and various lamps located in the same room, and different sockets and lamps do not belong to the same mains circuit; if the server room is used, one part of the servers is powered by one line of the mains supply circuit, and the other part of the servers is powered by the other line of the mains supply circuit, when one line of the circuits fails, the short-time power failure can occur, so that the situation that the loads located in the same geographical position cannot be completely unavailable due to the power failure of one line of the mains supply circuit is ensured, the continuous operation of part of the loads is ensured, and the stability of the loads is improved.
Optionally, as one of the embodiments, there is also provided a power distribution control method, using the system in the foregoing embodiment, where the method includes:
if one pair of buses cannot transmit electric power, the other two pairs of buses transmit electric power for the pair of buses which cannot transmit electric power through the second on-off control parts respectively;
if the two pairs of buses cannot transmit electric power, the generator is started, and the generator and the other pair of buses which can transmit electric power jointly transmit electric power for the two pairs of buses which cannot transmit electric power;
if the three pairs of buses can not transmit electric power, the generator is started, and the generator provides electric power for the three pairs of buses through the third on-off control component.
The above examples can be seen as specific examples, and for better illustration, see table 1 below.
TABLE 1 schematic diagram of ON/OFF states of on/off control members under various scenes
Table 1 shows on/off states of the on/off control members in various scenes, where the on state is 1 and the off state is 0.
When three mains supply circuits are normal, namely in a scene 1, the first on-off control component K1-1, the first on-off control component K2-1, the first on-off control component K3-1, the first on-off control component K4-1, the first on-off control component K5-1 and the first on-off control component K6-1 are in an on state, each bus L1-L6 is powered by the mains supply circuit of each circuit, when the first mains supply fails, the scene 1 is changed to a scene 2, the first on-off control component K1-1 and the first on-off control component K2-1 are disconnected, the second on-off control component K2-2-3 and the second on-off control component K1-2-6 are switched on, and the second mains supply circuit and the third mains supply circuit provide power for the bus L1 and the bus L2 of the first mains supply circuit.
The sequence of the on and off of the respective on/off control members is shown in fig. 3. Fig. 3 is a schematic diagram of the state and sequence of the on-off control unit when scene 1 changes to scene 3.
The sequence of the on and off of each on-off control component is based on that at most one power supply power can be provided at any time of the bus, the bus can not have power supply power, but two or more power supply powers can not be provided for supplying power to the bus at the same time so as to prevent abnormity, and a person skilled in the art can determine the sequence of the on and off of each on-off control component by combining the principle that table 1 and the principle that two power supply powers can not appear at any time of any bus.
When the first path of commercial power circuit has a fault, the bus is disconnected with the first path of commercial power circuit for power supply, namely the first on-off control component K1-1 and the first on-off control component K2-1 are disconnected, and then the second on-off control component K1-2-6 and the second on-off control component K1-2-3 are switched on. The situation that two paths of electricity are simultaneously supplied to a bus at the position of the bus to cause abnormity can be effectively avoided if the first path of commercial power circuit suddenly recovers power supply in the process of switching from a scene to a scene II.
If the two pairs of buses cannot transmit electric power, the generator is started, and the generator and the other pair of buses which can transmit electric power jointly transmit electric power for the two pairs of buses which cannot transmit electric power; supposing that the first and second commercial power circuits are failed at the same time, referring to table 1 and fig. 4, it can be confirmed from table 1 that two technical solutions can be implemented when the two circuits are failed, the description of the embodiment of the present invention taking the change from scene 1 to scene 10 is also described, and of course, the change from scene 1 to scene 9 may also be performed, and a person skilled in the art may set the two technical solutions according to specific actual requirements.
When the scene 1 is changed into the scene 10, the first on-off control component K1-1, the first on-off control component K2-1, the first on-off control component K3-1 and the first on-off control component K4-1 are disconnected, after the generator is started, the third on-off control component K1-3, the third on-off control component K2-3 and the third on-off control component K3-3 are connected, the second on-off control component K4-2-5 is connected, the bus L1, the bus L2 and the bus L3 are powered by the generator, and the bus L4 is powered by the bus L5 hung below the third mains circuit through the second on-off control component K4-2-5.
Similarly, when the other two paths fail to supply power at the same time, that is, when the scene 1 is changed to the scene 5, the scene 6, the scene 7, or the scene 8, the on/off of the on/off control component is shown in table 1, which is not illustrated here.
When the three pairs of buses can not transmit electric power, the generator is started, the generator provides electric power for the three pairs of buses through the third on-off control component, that is, when the scene 1 is changed to the scene 11, referring to table 1 and fig. 5, the first on-off control component K1-1, the first on-off control component K2-1, the first on-off control component K3-1, the first on-off control component K4-1, the first on-off control component K5-1, and the first on-off control component K6-1 are turned off, the generator is started, the third on-off control component K1-3, the third on-off control component K2-3, the third on-off control component K3-3, the third on-off control component K4-3, the third on-off control component K5-3, and the third on-off control component K6-3 are turned on, and the generator supplies power to the three pairs of buses through the third on-off control component.
Optionally, as an embodiment, if the three pairs of buses cannot transmit power and the one pair of buses recovers power transmission, the generator continues to supply power to the two pairs of buses that do not recover power transmission; if it is assumed that the first commercial power circuit is recovered to be normal, and the second commercial power circuit and the third commercial power circuit are not yet powered, the working scene is changed from the scene 11 to the scene 13, as shown in table 1 and fig. 6, after the third on-off control component K1-3 and the third on-off control component K2-3 are disconnected, the first on-off control component K1-1 and the first on-off control component K2-1 are turned on.
If the three pairs of buses can not transmit power, after the power transmission is restored by one pair of buses, the power transmission is restored by the other pair of buses, the generator stops running, and the other pair of buses which do not restore the power transmission are supplied with power by the two pairs of buses which restore the power transmission through the respective second on-off control parts;
taking the above embodiment as an example, if all three pairs of buses cannot transmit power, when the first line of commercial power circuit is recovered, the second line of commercial power circuit is recovered again, the working scenario is changed from scenario 13 to scenario 4, as shown in table 1 and fig. 7, the third on-off control component K3-3, the third on-off control component K4-3, the third on-off control component K5-3, and the third on-off control component K6-3 are turned off, the first on-off control component K3-1 and the first on-off control component K4-1 are turned on, the second on-off control component K4-2-5 and the second on-off control component K1-2-6 are turned on, and the first commercial power circuit and the second commercial power circuit which have recovered power supply a pair of buses hung under the third commercial power circuit which has not recovered power transmission through the respective second on-off control components.
If the three pairs of buses cannot transmit power, the two pairs of buses are changed into two pairs of buses which can recover power transmission, and the two pairs of buses which can recover power transmission transmit power for the pair of buses which cannot transmit power together through the second on-off control component; if it is assumed that the first and third commercial power circuits are recovered to normal, that is, the scene 11 is changed to the scene 3, see table 1 and fig. 8, all the third on-off control components are turned off, the generator stops operating, the first on-off control components of the first and second commercial power circuits are turned on, the two pairs of buses L1-L2 and L5-L6 for power transmission are recovered, and power is transmitted for the bus L3 and the bus L4 through the second on-off control components K2-2-3 and K4-2-5.
When the two pairs of buses cannot transmit electric power and the transmission of electric power is resumed by changing to one pair of buses, the other two pairs of buses capable of transmitting electric power transmit electric power to the buses incapable of transmitting electric power through the second on-off control means. Supposing that the second and third commercial power circuits cannot supply power, the first commercial power circuit supplies power normally, and at this time, the second commercial power circuit recovers power supply, that is, when the working scene is changed from 7 to 4, see table 1 and fig. 9, the third on-off control component is turned off, the generator stops operating, the second on-off control component K2-2-3 is turned off, the first on-off control component K3-1 and K4-1 are turned on, and the second on-off control components K4-2-5 and K6-2-1 are turned on, so that the first and second commercial power circuits capable of transmitting power transmit power to the buses L5 and L6 of the third commercial power circuit through the second on-off control component K4-2-5 and the second on-off control component K6-2-1.
If one pair of buses cannot transmit power, the utility power circuit where the pair of buses are located is changed to recover power transmission, and after the other two pairs of buses transmitting power are respectively disconnected from the second on-off control parts of the pair of buses, the power transmission of the pair of buses is recovered.
If the first commercial power circuit and the third commercial power circuit can normally supply power, but the second commercial power circuit cannot supply power, and at this time, the second commercial power circuit recovers power supply, that is, when the working scene is changed from scene 3 to scene 1, see table 1 and fig. 10, after the second on-off control component K2-2-3 and the second on-off control component K4-2-5 are disconnected, the first on-off control component K3-1 and the first on-off control component K4-1 are connected, and the second commercial power circuit recovers power supply.
It should be noted that the switching of some scenes in table 1 is sometimes sequential, scenes 11, 12, and 13 are application scenes after one line of utility power is recovered after three lines of utility power are failed simultaneously based on scene 11, and scenes 5, 6, 7, 8, 9, and 10 are application scenes when another line of utility power is failed after one line of utility power is failed, or two lines of utility power are failed simultaneously.
The following description will be made by specific examples.
If the first and second commercial power circuits fail to supply power, and if the precondition is that three commercial power circuits cannot supply power, the third commercial power circuit recovers to supply power, and the first and second commercial power circuits still cannot supply power, the scene 14 is assumed; if the precondition is that three paths of mains supply are normally supplied, and then a first path of mains supply circuit and a second path of mains supply circuit cannot supply power, the system belongs to a scene 7 or a scene 8; if the precondition is that the first path of commercial power circuit cannot supply power, and then the second path of commercial power circuit cannot supply power, the scene 7 or 8 is the premise. Although the first and second commercial power circuits cannot supply power, the application scenes are different due to different preconditions, and the states of the on-off control components and the state of the generator are not completely the same. As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. The power distribution control device is characterized by comprising three pairs of buses and an on-off control component; wherein the content of the first and second substances,
each pair of buses is powered by different paths of commercial power circuits, each bus in each pair of buses is electrically connected with one bus in the other pair of buses, and two buses connected to the same pair of buses do not belong to the same pair of buses;
the on-off control component is electrically connected with the bus and comprises a first on-off control component, a second on-off control component, a third on-off control component and a fourth on-off control component;
the first on-off control component is used for controlling the connection between the bus and the mains supply circuit for supplying power;
the second on-off control component is used for controlling the circuit connection between the bus and the bus;
the third on-off control component is used for controlling the circuit connection between the bus and the generator;
and the fourth breaking control component is used for controlling the circuit connection between the bus and the load.
2. The device according to claim 1, characterized in that said on-off control means are in particular: any one or more of a circuit breaker and a power control switch.
3. The device according to claim 1, further comprising a control unit connected to the on-off control component for controlling the on-off state of each on-off control component according to the power supply condition of the utility power circuit on different paths, so that at most one power supply power of the bus at any time is only one.
4. The device of claim 3, wherein the control unit is further configured to monitor an operating state of a circuit in which the on-off control component is located.
5. A power distribution control system comprising the power distribution control apparatus according to any one of claims 1 to 4, further comprising: a generator for providing electrical power.
6. The system of claim 5, wherein the number of generators is N, N being an integer greater than or equal to 1.
7. The system of claim 5, wherein the sum of the power of the loads mounted under each pair of busbars is balanced with each other.
8. The system according to claim 7, characterized in that said loads have three groups, each group of said loads being respectively supplied with electric power by two busbars connected by a second on-off control member.
9. A power distribution control method using the system according to any one of claims 5 to 8, the method comprising:
if the normal power supply of all the buses is changed into the condition that one pair of buses cannot transmit power, the other two pairs of buses transmit power to the pair of buses which cannot transmit power through the second on-off control parts respectively;
if the normal power supply of all the buses is changed into the condition that two pairs of buses cannot transmit power, the generator is started, and the generator and the other pair of buses which can transmit power jointly transmit power for the two pairs of buses which cannot transmit power;
and if the normal power supply of all the buses is changed into that the three pairs of buses cannot transmit power, starting the generator, and providing power for the three pairs of buses by the generator through the third on-off control part.
10. The method of claim 9, wherein the method comprises:
if the three pairs of buses can not transmit power, the power transmission is changed to be recovered by one pair of buses, and the generator continues to supply power to the two pairs of buses which do not recover the power transmission;
if the three pairs of buses cannot transmit power, after the power transmission is restored by one pair of buses, the power transmission of the other pair of buses is restored, the two pairs of buses which have been restored to the power transmission supply power to the other pair of buses which cannot transmit power together through the second on-off control component;
if the three pairs of buses cannot transmit electric power, the three pairs of buses are changed into two pairs of buses which resume power transmission, and the two pairs of buses which resume power transmission respectively transmit electric power for the pair of buses which cannot transmit electric power through the second on-off control component;
if the two pairs of buses cannot transmit power, the power transmission is changed to be recovered by one pair of buses, and the other two pairs of buses capable of transmitting power transmit power for the buses incapable of transmitting power through the second on-off control parts;
if the pair of buses cannot transmit power, the utility power circuit where the pair of buses are located is changed to resume power transmission, and after the other two pairs of buses transmitting power are respectively disconnected from the second on-off control parts of the pair of buses, the power transmission of the pair of buses is resumed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622573.4A CN114362343A (en) | 2021-12-28 | 2021-12-28 | Power distribution control device, system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622573.4A CN114362343A (en) | 2021-12-28 | 2021-12-28 | Power distribution control device, system and method |
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| CN114362343A true CN114362343A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111622573.4A Pending CN114362343A (en) | 2021-12-28 | 2021-12-28 | Power distribution control device, system and method |
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| CN (1) | CN114362343A (en) |
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