CN117220396A - Online connection expansion device and system of mobile power supply system - Google Patents
Online connection expansion device and system of mobile power supply system Download PDFInfo
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- CN117220396A CN117220396A CN202210639821.4A CN202210639821A CN117220396A CN 117220396 A CN117220396 A CN 117220396A CN 202210639821 A CN202210639821 A CN 202210639821A CN 117220396 A CN117220396 A CN 117220396A
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Abstract
The invention relates to an online connection expansion device and system of a mobile power supply system, which are characterized in that the front end or the rear end of a main inlet switch of a low-voltage distribution box UP is connected with the online connection expansion device of the mobile power supply system in series, an online switching electric control switch and a mobile power supply power terminal are connected by utilizing an online expansion power line, meanwhile, the connecting terminal of the mobile power supply system is connected with the online switching electric control switch, the online connection controller in the online connection expansion device of the mobile power supply system monitors the voltage, frequency and phase parameters of power grid power in real time through a power sampling sensor, controls the synchronization of the mobile power supply system and the power grid power, and controls the on-off of the online switching electric control switch arranged on the online expansion power line, so that the online connection and switching of the mobile power supply system without power failure is realized, and the online connection device has the advantages of simplicity, high efficiency, low cost, high safety, full automation and reliability, and high practical value.
Description
Technical Field
The invention belongs to the technical field of online connection power supply of power supply systems, and particularly relates to an online connection expansion device and an online connection expansion system of a mobile power supply system.
Background
In order to better provide the power guarantee capability, the national power grid is greatly pushed to cancel the power outage operation of the distribution network plan, and the uninterrupted operation of the power utilization load of the low-voltage transformer area is popularized and applied in various places; various implementation modes, such as serial connection and synchronous grid connection, need short-time power failure to finish on-site access operation, and cannot achieve the aim of uninterrupted operation; and the switching is performed through the fast change-over switch, so that a millisecond-level short-time power failure exists, and the risk of load faults is increased.
In order to solve the problems existing in the prior art, further simplify the live working step, increase the application scene of the uninterrupted power operation, promote the uninterrupted power switching reliability and security, the national intellectual property agency discloses a uninterrupted power operation fast switching system and method (CN 113452076B), the scheme adopts a mode of adding the uninterrupted power operation fast switching system equipment to carry out uninterrupted power operation; the technical characteristics are that two bypass power supply paths with two alternative on-off switches are additionally arranged for the original power supply system at the same time, and the bypass power supply system comprises: the intelligent control system comprises a transformer, a low-voltage distribution box, a mobile power generation car, a breaker Q1, a breaker Q2, a change-over switch TSE1, a change-over switch TSE2, a solid-state electronic switch G1, a main control unit M1, a current sensor CT1 and a current sensor CT2, a large number of electric components are added, and the intelligent control system is complex in control and high in cost; particularly, the scheme has complex system structure and connection relation and obvious defects, such as the power switching process is matched by manual operation, and the … closing breaker Q1 penetrates through a mains bypass power supply loop; at the moment, the total incoming line switch of the low-voltage distribution box P1 is manually opened, and at the moment, the load is supplied by a bypass of the circuit breaker Q1 and the change-over switch TSE 1; when the load returns to the commercial power supply, the manual switch-on low-voltage distribution box main inlet switch is also needed, and the switch-off breakers Q1 and Q2 return to the initial state.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides an online connection expansion device and system of a mobile power supply system, comprising: the system comprises an online connection controller, an online switching electric control switch, an online extension power line, a power sampling sensor, a mobile power supply access power terminal, a mobile power supply system connection terminal, a mobile power supply system, an extension device control line, a power supply electric control switch, a power supply power line, a 1 st power supply power line connection terminal and a 2 nd power supply power line connection terminal; the power supply system is characterized in that a 1 st power supply power line connecting terminal of the mobile power supply system on-line connection expansion device is connected with a main incoming line switch of a low-voltage distribution box UP, and a 2 nd power supply power line connecting terminal is connected with a power bus for supplying power to a power load; the mobile power supply system is connected with a mobile power supply power terminal of the mobile power supply system on-line connection expansion device through a mobile power supply system connection terminal; and the online connection controller of the online connection expansion device of the mobile power supply system is connected with the mobile power supply system through the control line of the expansion device, so as to form a system architecture for online controlled interaction switching of the mobile power supply system and the power grid power without power failure.
The on-line connection expansion device and system for the mobile power supply system according to claim 1, wherein the power supply electric control switch of the on-line connection expansion device for the mobile power supply system is respectively connected with a 1 st power supply power line connection terminal and a 2 nd power supply power line connection terminal through power supply power lines; one end of the on-line switching electric control switch is connected to a power supply power line between the power supply electric control switch and a 2 nd power supply power line connecting terminal through an on-line expansion power line, and the other end of the on-line switching electric control switch is connected with a mobile power supply system connecting terminal; the power sampling sensor is connected to a power supply power line between the power supply electric control switch and the 1 st power supply power line connecting terminal; the on-line connection controller is respectively connected with the on-line switching electric control switch, the electric power sampling sensor and the power supply electric control switch through control lines of the expansion device; the mobile power supply system on-line connection expansion device with the uninterrupted operation framework is formed.
The online connection expansion device and system of a mobile power system according to claim 1, wherein the control method for the uninterrupted operation of the online connection expansion device of the mobile power system comprises the following steps:
1) Grid power normal power supply operation: the mobile power supply system is normally connected with the online connection expansion device, the main inlet wire switch of the low-voltage distribution box UP and the power supply electric control switch are closed, and meanwhile, the online switching electric control switch is opened; the power grid power is supplied to a power bus for supplying power to a power load through a main inlet switch and a power supply power line of a low-voltage distribution box UP;
2) The mobile power supply system is connected on line without power failure: the on-line switching electric control switch is controlled to be opened, and the main inlet switch of the low-voltage distribution box UP and the power supply electric control switch are closed; the mobile power supply system connection terminal is connected with a mobile power supply power terminal of the mobile power supply system on-line connection expansion device, the on-line connection controller controls the mobile power supply system to be started, and the power sampling sensor is used for monitoring voltage, frequency and phase parameters of power grid power in real time, controlling synchronization of the mobile power supply system and the power grid power, and controlling the on-line switching electric control switch to be closed and controlling the power supply electric control switch to be opened after synchronization; the mobile power supply system is connected on line without power failure and supplies power for a power bus for supplying power to the power load;
3) The mobile power supply system cuts out on line without power failure: the on-line connection controller monitors voltage, frequency and phase parameters of the power grid power in real time through the power sampling sensor, controls synchronization of the mobile power supply system and the power grid power, controls the power supply electric control switch to be closed by the on-line connection controller after synchronization, controls the on-line switching electric control switch to be opened, and the mobile power supply system is stopped and switched out on line, and is powered by the power grid power to supply power to a power bus for power utilization load.
The invention relates to an online connection expansion device and system of a mobile power supply system, which are characterized in that the front end or the rear end of a main inlet switch of a low-voltage distribution box UP is connected with the online connection expansion device of the mobile power supply system in series, an online switching electric control switch and a mobile power supply power terminal are connected by utilizing an online expansion power line, meanwhile, the connecting terminal of the mobile power supply system is connected with the online switching electric control switch, the online connection controller in the online connection expansion device of the mobile power supply system monitors the voltage, frequency and phase parameters of power grid power in real time through a power sampling sensor, controls the synchronization of the mobile power supply system and the power grid power, and controls the on-off of the online switching electric control switch arranged on the online expansion power line, so that the online connection and switching of the mobile power supply system without power failure is realized, and the online connection device has the advantages of simplicity, high efficiency, low cost, high safety, full automation and reliability, and high practical value.
Drawings
Fig. 1 is a schematic diagram of a mobile power system on-line connection expansion device, a system and a power supply system.
Fig. 2 is a schematic diagram of the construction principle of the on-line connection expansion device of the mobile power system.
Detailed Description
As an embodiment, an online connection expansion device and system for a mobile power system will be described with reference to the accompanying drawings, but the described embodiments are some embodiments, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The technique and scheme of the present invention are not limited to those given in the present embodiment example.
As shown in fig. 1, an online connection expansion device and system for a mobile power system include: the power supply system comprises an online connection controller (11), an online switching electric control switch (12), an online expansion power line (13), a power sampling sensor (14), a mobile power supply access power terminal (15), a mobile power supply system connection terminal (16), a mobile power supply system (17), an expansion device control line (18), a power supply electric control switch (19), a power supply power line (101), a 1 st power supply power line connection terminal (102) and a 2 nd power supply power line connection terminal (103); the power supply system is characterized in that a 1 st power supply power line connecting terminal (102) of the mobile power supply system on-line connection expanding device (100) is connected with a main incoming line switch of a low-voltage distribution box UP, and a 2 nd power supply power line connecting terminal (103) is connected with a power bus for supplying power to an electric load; the mobile power supply system (17) is connected with a mobile power supply power terminal (15) of the mobile power supply system on-line connection expansion device (100) through a mobile power supply system connection terminal (16); and an online connection controller (11) of the online connection expansion device (100) of the mobile power supply system is connected with the mobile power supply system (17) through an expansion device control line (18), so as to form a system architecture of online controlled and interactive switching of the mobile power supply system (17) and the power grid power without power failure.
As shown in fig. 2, the on-line connection expansion device and system for a mobile power supply system are characterized in that a power supply electric control switch (19) of the on-line connection expansion device (100) for the mobile power supply system is respectively connected with a 1 st power supply power line connection terminal (102) and a 2 nd power supply power line connection terminal (103) through a power supply power line (101); one end of the on-line switching electric control switch (12) is connected to a power supply power line (101) between the power supply electric control switch (19) and a 2 nd power supply power line connecting terminal (103) through an on-line extension power line (13), and the other end of the on-line switching electric control switch is connected with a mobile power supply system connecting terminal (16); the power sampling sensor (14) is connected to a power supply power line (101) between the power supply electric control switch (19) and the 1 st power supply power line connecting terminal (102); the on-line connection controller (11) is respectively connected with the on-line switching electric control switch (12), the electric power sampling sensor (14) and the power supply electric control switch (19) through an expansion device control line (18); the mobile power supply system on-line connection expansion device with the uninterrupted operation framework is formed.
The on-line connection expansion device and system of the mobile power supply system are characterized in that the control method for the uninterrupted operation of the on-line connection expansion device (100) of the mobile power supply system is as follows:
1) Grid power normal power supply operation: the mobile power supply system is connected with the expansion device (100) on line normally, the main incoming line switch of the low-voltage distribution box UP and the power supply electric control switch (19) are closed, and meanwhile, the on-line switching electric control switch (12) is opened; the power grid power is supplied to a power bus for supplying power to a power load through a main inlet switch and a power supply power line (101) of a low-voltage distribution box UP and a power supply electric control switch (19);
2) The mobile power supply system (17) is connected on line without power failure: the on-line switching electric control switch (12) is controlled to be switched off, and a main incoming line switch of the low-voltage distribution box UP and the power supply electric control switch (19) are controlled to be switched on; the mobile power supply system connecting terminal (16) is connected with a mobile power supply power terminal (15) of the mobile power supply system online connection expansion device (100), the online connection controller (11) controls the mobile power supply system (17) to be started, and voltage, frequency and phase parameters of power grid power are monitored in real time through the power sampling sensor (14), the synchronization of the mobile power supply system (17) and the power grid power is controlled, and the online connection controller (11) controls the online switching electric control switch (12) to be closed and controls the power supply electric control switch (19) to be opened after the synchronization; the mobile power supply system (17) is connected on line without power failure and supplies power for a power bus for supplying power to an electric load;
3) The mobile power supply system (17) is cut off on line without power failure: the on-line connection controller (11) monitors voltage, frequency and phase parameters of power grid power in real time through the power sampling sensor (14), controls synchronization of the mobile power supply system (17) and the power grid power, controls the power supply electric control switch (19) to be closed by the on-line connection controller (11) after synchronization, controls the on-line switching electric control switch (12) to be disconnected, and the mobile power supply system (17) is stopped and switched out on line, and is powered by the power grid power to supply power to a power bus of the power utilization load.
The invention relates to an online connection expansion device and system of a mobile power supply system, which are characterized in that the front end or the rear end of a main incoming line switch of a low-voltage distribution box UP is connected with the online connection expansion device of the mobile power supply system in series, an online extension power line (13) is utilized to connect an online switching electric control switch (12) and a mobile power supply power terminal (15), meanwhile, a mobile power supply system connecting terminal (16) is connected with the online switching electric control switch (12), an online connection controller (11) in the online connection expansion device of the mobile power supply system is used for monitoring voltage, frequency and phase parameters of power grid power in real time through a power sampling sensor (14), controlling synchronization of the mobile power supply system (17) and the power grid power, and controlling on-off of the online switching electric control switch (12) arranged on the online extension power line (13), so that the online connection and switching of the mobile power supply system without power outage are realized, and the online connection device with the advantages of simplicity, high efficiency, low cost, high safety, full automation and reliability, and high practical value.
It should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the present invention has been described in detail with reference to the examples, it should be understood by those skilled in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the invention.
Claims (3)
1. An online connection expansion device and system of a mobile power supply system, comprising: the system comprises an online connection controller, an online switching electric control switch, an online extension power line, a power sampling sensor, a mobile power supply access power terminal, a mobile power supply system connection terminal, a mobile power supply system, an extension device control line, a power supply electric control switch, a power supply power line, a 1 st power supply power line connection terminal and a 2 nd power supply power line connection terminal; the power supply system is characterized in that a 1 st power supply power line connecting terminal of the mobile power supply system on-line connection expansion device is connected with a main incoming line switch of a low-voltage distribution box UP, and a 2 nd power supply power line connecting terminal is connected with a power bus for supplying power to a power load; the mobile power supply system is connected with a mobile power supply power terminal of the mobile power supply system on-line connection expansion device through a mobile power supply system connection terminal; and the online connection controller of the online connection expansion device of the mobile power supply system is connected with the mobile power supply system through the control line of the expansion device, so as to form a system architecture for online controlled interaction switching of the mobile power supply system and the power grid power without power failure.
2. The on-line connection expansion device and system for the mobile power supply system according to claim 1, wherein the power supply electric control switch of the on-line connection expansion device for the mobile power supply system is respectively connected with a 1 st power supply power line connection terminal and a 2 nd power supply power line connection terminal through power supply power lines; one end of the on-line switching electric control switch is connected to a power supply power line between the power supply electric control switch and a 2 nd power supply power line connecting terminal through an on-line expansion power line, and the other end of the on-line switching electric control switch is connected with a mobile power supply system connecting terminal; the power sampling sensor is connected to a power supply power line between the power supply electric control switch and the 1 st power supply power line connecting terminal; the on-line connection controller is respectively connected with the on-line switching electric control switch, the electric power sampling sensor and the power supply electric control switch through control lines of the expansion device; the mobile power supply system on-line connection expansion device with the uninterrupted operation framework is formed.
3. The online connection expansion device and system of a mobile power system according to claim 1, wherein the control method for the uninterrupted operation of the online connection expansion device of the mobile power system comprises the following steps:
1) Grid power normal power supply operation: the mobile power supply system is normally connected with the online connection expansion device, the main inlet wire switch of the low-voltage distribution box UP and the power supply electric control switch are closed, and meanwhile, the online switching electric control switch is opened; the power grid power is supplied to a power bus for supplying power to a power load through a main inlet switch and a power supply power line of a low-voltage distribution box UP;
2) The mobile power supply system is connected on line without power failure: the on-line switching electric control switch is controlled to be opened, and the main inlet switch of the low-voltage distribution box UP and the power supply electric control switch are closed; the mobile power supply system connection terminal is connected with a mobile power supply power terminal of the mobile power supply system on-line connection expansion device, the on-line connection controller controls the mobile power supply system to be started, and the power sampling sensor is used for monitoring voltage, frequency and phase parameters of power grid power in real time, controlling synchronization of the mobile power supply system and the power grid power, and controlling the on-line switching electric control switch to be closed and controlling the power supply electric control switch to be opened after synchronization; the mobile power supply system is connected on line without power failure and supplies power for a power bus for supplying power to the power load;
3) The mobile power supply system cuts out on line without power failure: the on-line connection controller monitors voltage, frequency and phase parameters of the power grid power in real time through the power sampling sensor, controls synchronization of the mobile power supply system and the power grid power, controls the power supply electric control switch to be closed by the on-line connection controller after synchronization, controls the on-line switching electric control switch to be opened, and the mobile power supply system is stopped and switched out on line, and is powered by the power grid power to supply power to a power bus for power utilization load.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639821.4A CN117220396A (en) | 2022-06-02 | 2022-06-02 | Online connection expansion device and system of mobile power supply system |
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| CN202210639821.4A CN117220396A (en) | 2022-06-02 | 2022-06-02 | Online connection expansion device and system of mobile power supply system |
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