CN118112456A - Power supply state identification device, identification method and power supply system - Google Patents

Abstract

The embodiment of the invention discloses a power supply state identification device, an identification method and a power supply system. The power state recognition device includes: the load type selection module is used for selecting the load type of the load; the control module is respectively connected with the load type selection module and the three-phase alternating current power supply, and is used for detecting the power supply state of the three-phase alternating current power supply in real time and determining whether the operation state of the three-phase alternating current power supply is abnormal or not according to the detected power supply state and the load type; and the state indicating module is connected with the control module and used for indicating the running state of the three-phase alternating current power supply. According to the technical scheme, the control module and the state indication module can accurately monitor and display the power supply state of the three-phase alternating current power supply in real time when the power supply system works, the reliability and the safety of the system are improved, the indicator lamp does not need to be replaced according to the single-phase load, the construction and acceptance difficulty is reduced, and the maintenance is convenient. Meanwhile, hidden danger of the ring network can be detected, and running risk is reduced.

Description

Power supply state identification device, identification method and power supply system

Technical Field

The embodiment of the invention relates to the technical field of power equipment, in particular to a power supply state identification device, an identification method and a power supply system.

Background

In order to ensure the reliability of power supply of a power supply system for a station in a transformer substation, an important load usually adopts a double-power supply mode.

In the existing transformer substation alternating current power distribution cabinet, a single-phase live indicator lamp is additionally arranged on the three-phase alternating current air-break load side and used for displaying the live condition of a load, and for a three-phase power supply load, the function of the single-phase live indicator lamp is not affected by the phase of the single-phase live indicator lamp. However, when the load is a single-phase power supply load, the load is connected to the first phase of the first power supply system and the first phase of the second power supply system respectively, the second phase and the third phase of the power supply system are disconnected, if the live indicator lamp of the first power supply system is connected to the first phase and the live indicator lamp of the second power supply system is connected to the third phase, the problem that the phases are not corresponding exists, and when the alternating current of the first power supply system is turned on and off, the single-phase live indicator lamp is turned on no matter whether the alternating current is connected to the load or not on the load side of the alternating current. Therefore, the single-phase indicator lamp does not correspond to the single-phase load and does not affect the electrified indication function, so that a construction unit does not consider the problem that the single-phase electrified indicator lamp does not correspond to the single-phase load.

For the second set of power supply system, when the alternating current in the second set of power supply system is empty to open, because the live indicator lamp of the second set of power supply system is connected with the phase of the connection and does not correspond, the live indicator lamp is not on, but in fact, the load side of the first phase in the second set of power supply system can be electrified through the looped network, and because the live indicator lamp can not correctly indicate the electrification condition, the live indication fault occurs, and potential safety hazards exist.

Disclosure of Invention

The embodiment of the invention provides a power state identification device, an identification method and a power supply system, which are used for solving the problem that a single-phase indicator lamp has electrified indication faults due to non-correspondence of phases in a dual-power supply mode.

In a first aspect, a power state recognition device is provided, and the power state recognition device is applied to a power supply system, wherein the power supply system comprises a three-phase alternating current power supply, an air switch and a load which are sequentially connected in series; the power state recognition device includes:

The load type selection module is used for selecting the load type of the load; wherein the load types include single-phase power supply loads and three-phase power supply loads;

the control module is respectively connected with the load type selection module and the three-phase alternating current power supply, and is used for detecting the power supply state of the three-phase alternating current power supply in real time and determining whether the running state of the three-phase alternating current power supply is abnormal or not according to the detected power supply state and the load type;

the state indicating module is connected with the control module and is used for indicating the running state of the three-phase alternating current power supply.

Optionally, the operation state of the three-phase ac power supply includes: normal operation state, single-phase operation state, open-phase operation state and full-phase operation state;

The state indicating module comprises a first state indicating lamp, a second state indicating lamp, a third state indicating lamp and a fourth state indicating lamp, wherein each state indicating lamp is connected with the control module, and one state indicating lamp corresponds to one running state.

Optionally, the power state identifying device further includes a power selecting module, the power selecting module is connected between the three-phase ac power supply and the control module, and the power selecting module is configured to select one phase of the three-phase ac power supply to supply power to the control module according to the load type.

Optionally, the power supply selection module comprises a single-pole three-throw switch and a first dial switch;

The three input ends of the single-pole three-throw switch are respectively connected with a first phase, a second phase and a third phase of the three-phase alternating current power supply, and the output end of the single-pole three-throw switch is connected with the control module;

The first dial switch is connected with the control end of the single-pole three-throw switch.

Optionally, the power state recognition device further comprises a three-phase power indication module;

The three-phase power supply indication module is connected between the three-phase alternating current power supply and a neutral line and is used for indicating the power supply state of the three-phase alternating current power supply;

The three-phase power supply indication module comprises a first resistor, a second resistor, a third resistor, a first power supply indication lamp and a second power supply indication lamp, wherein the first end of the first resistor is connected with a first phase of the three-phase alternating current power supply, the second end of the first resistor is connected with the first end of the first power supply indication lamp, and the second end of the first power supply indication lamp is connected with the neutral line; the first end of the second resistor is connected with a second phase of the three-phase alternating current power supply, the second end of the second resistor is connected with the first end of the second power supply indicator lamp, and the second end of the second power supply indicator lamp is connected with the neutral line; the first end of the third resistor is connected with a third phase of the three-phase alternating current power supply, the second end of the third resistor is connected with the first end of the third power supply indicator lamp, and the second end of the third power supply indicator lamp is connected with the neutral line;

the first power indicator lamp, the second power indicator lamp and the third power indicator lamp have different light-emitting colors.

Optionally, the power state recognition device further comprises an alarm module, wherein the alarm module is connected with the control module and is used for outputting an alarm signal when the operation state of the three-phase alternating current power supply is abnormal;

the power state identification device further comprises a silencing module, wherein the silencing module is connected with the alarm module and used for resetting the alarm module after the alarm module outputs the alarm signal.

Optionally, the power state identifying device further includes a housing, the load type selecting module and the state indicating module are disposed on a first surface of the housing, and a second surface disposed opposite to the first surface of the housing is provided with a connection terminal and a neutral terminal of the three-phase ac power supply;

the first surface of the shell is also provided with a reset switch, and the reset switch is connected with the silencing module;

the load type selection module includes a second dial switch.

In a second aspect, a power state identifying method is provided, where the power state identifying method includes a power state identifying device provided by any embodiment of the present invention;

The power supply state identification method comprises the following steps:

Controlling the load type selection module to select the load type of the load;

the control module is controlled to detect the power supply state of the three-phase alternating current power supply in real time, and whether the operation state of the three-phase alternating current power supply is abnormal or not is determined according to the detected power supply state and the load type;

and controlling the state indicating module to indicate the running state of the three-phase alternating current power supply.

Optionally, the controlling the control module to detect the power supply state of the three-phase ac power in real time, and determining whether the operation state of the three-phase ac power is abnormal according to the detected power supply state and the load type includes:

the control module is controlled to detect the power supply state of the three-phase alternating current power supply in real time;

if the power supply state is consistent with the load type, determining that the operation state of the three-phase alternating current power supply is normal;

if the power supply state is inconsistent with the load type, determining that the operation state of the three-phase alternating current power supply is abnormal;

The power state recognition device further comprises a power selection module;

before determining the operation state of the three-phase alternating current power supply, the power supply state identification method further comprises:

and controlling the power supply selection module to select one phase of the three-phase alternating current power supply to supply power to the control module according to the load type.

In a third aspect, a power supply system is provided, where the power supply system includes the power state identifying device provided by any embodiment of the present invention;

The power supply system further comprises a first three-phase alternating current power supply, a first air switch, a load, a second three-phase alternating current power supply and a second air switch, wherein the first air switch is connected between the first three-phase alternating current power supply and a first terminal row, the first terminal row is connected with the load, the second air switch is connected between the second three-phase alternating current power supply and a second terminal row, and the second terminal row is connected with the load;

One side of the first terminal row connected with the first air switch is connected with one power state identification device, and one side of the second terminal row connected with the second air switch is connected with the other power state identification device.

According to the technical scheme provided by the embodiment of the invention, the power supply state identification devices are respectively arranged on two sides of the two-way power supply system, the control module in each side of the power supply state identification device is respectively connected with the load type selection module and the corresponding three-phase alternating current power supply, when a load is connected into the power supply system, the load type of the load is selected through the load type selection module and is input into the control module, the control module detects the power supply state of the three-phase alternating current power supply in real time, and then compares the power supply state with the preselected load type to determine whether the running state of the three-phase alternating current power supply is abnormal or not, and the current running state of the three-phase alternating current power supply is displayed through the state indication module. Compared with the prior art, the technical scheme provided by the embodiment is that the load type is preselected through the load type selecting module, whether the running state of the power supply is abnormal or not is determined through the control module according to the detected power supply state and the load type of the three-phase alternating current power supply, the current running state of the power supply is indicated through the state indicating module, the charged condition of the load side can be judged through the indication result of the state indicating module, the condition that the indicator lamp cannot display the charged condition correctly due to the fact that the indicator lamp is not corresponding to the condition of single-phase charged load is not needed in the construction process, and the reliability and the safety of the system are improved. Meanwhile, hidden danger of the ring network can be detected, and running risk is reduced.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a power status recognition device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention;

fig. 7 is a schematic front view of a housing of a power status recognition device according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of a back structure of a housing of a power status recognition device according to an embodiment of the present invention;

FIG. 9 is a flowchart of a power state identification method according to an embodiment of the present invention;

FIG. 10 is a flowchart of another power state identification method according to an embodiment of the present invention;

Fig. 11 is a flowchart of another power state identifying method according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present invention, and referring to fig. 1, a power state identifying device 400 provided in this embodiment may be applied to a power supply system, where the power supply system includes a three-phase ac power supply, an air switch, and a load L sequentially connected in series; the power supply system can be a dual-power supply system and is provided with two sets of power supplies. For example, a first set of power supplies includes a first three-phase ac power supply 100 and a first air switch 200, and a second set of power supplies includes a second three-phase ac power supply 101 and a second air switch 201. Each set of power supply is connected with a power supply state identification device 400.

Optionally, the power supply system further comprises a first terminal strip 300 and a second terminal strip 301.

Wherein the first terminal block 300 and the second terminal block 301 are used for connecting the power supply system with the load L.

The power state recognition device 400 includes:

A load type selection module 1 for selecting a load type of the load L; wherein the load types include single-phase power supply loads and three-phase power supply loads; single-phase power load refers to a power supply mode using one phase line and neutral line of a three-phase ac power source to transmit electric power, such as a general socket, a lighting device, a home appliance, and the like. The three-phase power supply load refers to a power supply mode in which electric power is transmitted through phase lines and neutral lines, which are displaced 120 degrees from each other by three phase lines of a three-phase ac power supply, such as factories, shops, large-sized machine equipment, and the like. The actual application scenarios of the single-phase power supply load and the three-phase power supply load are not particularly limited here. The neutral line is a common intersection of three phases in a three-phase ac power supply, i.e., a line from which the neutral point is drawn.

The control module 2 is respectively connected with the load type selection module 1 and the three-phase alternating current power supply, and the control module 2 is used for detecting the power supply state of the three-phase alternating current power supply in real time and determining whether the operation state of the three-phase alternating current power supply is abnormal or not according to the detected power supply state and the load type.

The state indicating module 3 is connected with the control module 2, and the state indicating module 3 is used for indicating the running state of the three-phase alternating current power supply.

The three-phase alternating current power supply is used for supplying power to the load L and the control module 2, the air switch is used for controlling the on-off of a connecting path between the three-phase alternating current power supply of the circuit and the load L, and the safety and the stability of the system can be ensured. In a dual-power supply system, only a single power supply is generally used for supplying power at the same time, and when one power supply fails, the power supply is quickly switched to the other power supply.

Specifically, an air switch on one side is closed, and the three-phase alternating current power supply supplies power normally. Taking the case that the first air switch 200 is closed and the second air switch 201 is opened, selecting a load type matched with an actual load by the load type selecting module 1, inputting the load type to the control module 2, when the first three-phase alternating current power supply 100 works normally, detecting the power supply state of the first three-phase alternating current power supply 100 in real time by the control module 2, inputting the monitoring result to the control module 2, judging whether the current power supply state of the first three-phase alternating current power supply 100 is consistent with the load type by the control module 2 through comparing the pre-input load type and the real-time monitoring result, and further indicating the comparison result by the state indicating module 3. The power supply state of the three-phase alternating current power supply refers to the three-phase electrification condition of the power supply, and if the three-phase alternating current power supply is electrified in only one phase, the power supply state is single-phase power supply; if the three-phase alternating current power supply is electrified only by two phases, the power supply state is phase-failure power supply; if three phases of the three-phase alternating current power supply are electrified, the power supply state is full-phase power supply. Illustratively, when the load L is selected to be a single-phase power supply load by the load type selection module 1, if the control module 2 detects that the current power supply state of the three-phase ac power supply is single-phase power supply, the state indication module 3 is displayed as normal; if the control module 2 detects that the current three-phase alternating current power supply state is open-phase or full-phase power supply, the state indication module 3 displays abnormality. When the load L is selected as a three-phase power supply load by the load type selection module 1, if the control module 2 detects that the current power supply state of the three-phase alternating current power supply is three-phase power supply, the state indication module 3 displays that the power supply is normal; if the control module 2 detects that the current power supply state of the three-phase alternating current power supply is single-phase power supply or phase-failure power supply, the state indication module 3 displays abnormality.

It should be understood that in the dual-power supply system, when the first set of power supplies normally supply power to the load L, the second set of power supply load sides are charged as well due to the ring network, so that the power supply state of the power supply state identification device on the second set of power supply load sides is the same as the power supply state of the power supply state identification device on the first set of power supply load sides. Illustratively, when the first set of power supply is used for supplying power, the second set of power supply is disconnected, the three-phase power supply indicating module 5 connected with the first set of power supply indicates the current power supply state of the three-phase alternating-current power supply (i.e., the first three-phase alternating-current power supply 100), and because of the ring network, the indication state of the three-phase power supply indicating module 5 connected with the second set of power supply system is the same as the power supply state of the first set of power supply system, so that the electrification condition of the load L is further judged according to the indication result.

According to the technical scheme provided by the embodiment of the invention, the power supply state identification devices 400 are respectively arranged on two sides of the two-way power supply system, the control module 2 in each side of the power supply state identification device 400 is respectively connected with the load type selection module 1 and the corresponding three-phase alternating current power supply, when the load L is connected into the power supply system, the load type of the load L is selected through the load type selection module 1 and is input into the control module 2, the control module 2 detects the power supply state of the three-phase alternating current power supply in real time, and then compares the power supply state with the preselected load type to determine whether the running state of the three-phase alternating current power supply is abnormal or not, and the current running state of the three-phase alternating current power supply is displayed through the state indication module 3. Compared with the prior art, the technical scheme provided by the embodiment is that the load type is selected in advance through the load type selection module 1, whether the running state of the power supply is abnormal or not is determined through the control module according to the detected power supply state and the load type of the three-phase alternating current power supply, the current running state of the power supply is indicated through the state indication module 3, the charged condition of the load side can be judged through the indication result of the state indication module 3, the condition that the charged condition cannot be correctly displayed due to the fact that the indicator lamp is not corresponding to the single-phase charged condition of the load L is not needed in the construction process, and the reliability and the safety of the system are improved. Meanwhile, hidden danger of the ring network can be detected, and running risk is reduced.

Optionally, the control module 2 may include a central processing unit (Central Processing Unit, CPU) to implement logic control functions, as well as other arithmetic processing functions.

The following embodiments will each be described by taking the power state recognition device 400 on the first three-phase ac power supply 100 side as an example.

Optionally, the operating state of the three-phase ac power source includes: normal operation state, single-phase operation state, open-phase operation state, and full-phase operation state.

When the load type selection module 1 is a single-phase power supply load or a three-phase power supply load, the power supply state of the three-phase alternating current power supply detected by the control module 2 in real time is consistent with the pre-selected load type. Illustratively, when the load type module 1 selects the load L as the single-phase power supply load, if the power supply state of the three-phase ac power supply detected by the control module 2 is also single-phase power supply, the operation state of the three-phase ac power supply is determined to be a normal operation state, and the state indication module 3 displays as normal; when the load type module 1 selects the load L as the three-phase power supply load, if the power supply state of the three-phase alternating current power supply detected by the control module 2 is full-phase power supply, the running state of the three-phase alternating current power supply is judged to be a normal running state, and the state indicating module 3 displays that the running state is normal.

The single-phase operation state, the open-phase operation state and the full-phase operation state refer to operation states under the condition that the load type of the load L selected by the load type selecting module 1 is inconsistent with the power supply state of the three-phase alternating current power supply detected by the control module 2 in real time. For example, when the load type of the load L is a three-phase power supply load, the load L is selected as the three-phase power supply load by the load type module selection 1, and if the control module 2 detects that the power supply state of the three-phase ac power supply is single-phase power supply, it is determined that the operation state of the three-phase ac power supply is single-phase operation state, and the indication result of the state indication module 3 is single-phase. If the control module 2 detects that the power supply state of the three-phase alternating current power supply is the phase-missing power supply, the operation state of the three-phase alternating current power supply is judged to be the phase-missing operation state, and the indication result of the state indication module 3 is the phase-missing.

When the load type of the load L is single-phase power supply load, the load L is selected as the single-phase power supply load through the load type module 1, and if the control module 2 detects that the power supply state of the three-phase alternating current power supply is a phase-failure running state, the indication result of the state indication module 3 is a phase failure. If the control module 2 detects that the power supply state of the three-phase alternating current power supply is a full-phase operation state, the indication result of the state indication module 3 is full-phase.

Fig. 2 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention, referring to fig. 2, optionally, the status indication module 3 includes a first status indicator lamp 31, a second status indicator lamp 32, a third status indicator lamp 33 and a fourth status indicator lamp 34, where each status indicator lamp is connected to the control module 2, and one status indicator lamp corresponds to one running status.

Specifically, the normal operation state, the single-phase operation state, the open-phase operation state, and the full-phase operation state may correspond to the first status indicator lamp 31, the second status indicator lamp 32, the third status indicator lamp 33, and the fourth status indicator lamp 34, respectively. Illustratively, when the first three-phase ac power source 100 is in a normal operating state, the first status indicator lamp 31 is on; when the operation state of the first three-phase ac power supply 100 is single-phase, the second status indicator lamp 32 is turned on; when the operation state of the first three-phase ac power supply 100 is a phase loss, the third status indicator lamp 33 is turned on; when the first three-phase ac power supply 100 is in full phase in operation, the fourth status indicator lamp 34 is turned on. The present embodiment provides only one of the correspondence relationships, and is not specifically limited herein.

Alternatively, the light emitting colors of the first status indicator lamp 31, the second status indicator lamp 32, the third status indicator lamp 33, and the fourth status indicator lamp 34 may be different to intuitively display the current operation status of the three-phase ac power supply.

According to the technical scheme provided by the embodiment, different running states of the three-phase alternating current power supply are further represented by the state indicator lamp, so that abnormal conditions in the power supply system can be found and identified in time, and the reliability and safety of the power supply system are improved. And the power state recognition device can lighten the corresponding state indicator lamp according to the running states of different three-phase alternating current power supplies, so that a user can intuitively know the current power supply state of the power supply system, and fault diagnosis and elimination are convenient. Meanwhile, the operation convenience and the working efficiency of a user are improved.

Fig. 3 is a schematic structural diagram of another power status recognition device according to an embodiment of the present invention, referring to fig. 3, the power status recognition device 400 further includes a power selection module 4, where the power selection module 4 is connected between a three-phase ac power source and the control module 2, and the power selection module 4 is configured to select one phase of the three-phase ac power source to supply power to the control module 2 according to a load type.

Optionally, the power supply selection module 4 includes a single pole three throw switch 41 and a first dial switch 42; three input ends of the single-pole three-throw switch 41 are respectively connected with a first phase A, a second phase B and a third phase C of a three-phase alternating current power supply, and an output end of the single-pole three-throw switch 41 is connected with the control module 2; the first dial switch 42 is connected to the control terminal of the single pole, triple throw switch 41.

The single pole three throw switch 41 can be used to switch the phase of the three-phase ac power source connected to the control module 2, so as to implement that one phase of the three-phase ac power source is used as the power supply of the control module 2. The first dial switch 42 is used for setting the working state of the single pole three throw switch 41 to change the gating path of the single pole three throw switch 41.

Specifically, the load type is selected by the load type selecting module 1, and the input end of the single-pole three-throw switch 41 is connected with one of the first three-phase ac power supplies 100 through the first dial switch 42 according to the load type, so that the first three-phase ac power supply 100 supplies power to the control module 2 normally. Illustratively, when the type of the load L is selected as a single-phase power supply load by the load type selection module 1, a one-phase power supply that supplies power to the load L may be selected as the power supply source of the control module 2; when the load type selection module 1 selects the type of load L to be a three-phase power supply load, any one of the phases of the first three-phase ac power supply 100 may be selected to supply power to the control module 2.

According to the technical scheme provided by the embodiment, the first dial switch 42 is connected with the single-pole three-throw switch 41, so that a proper power supply can be selected to supply power to the control module 2 according to different load types, other power supplies are not required to be introduced, the circuit structure is simplified, meanwhile, the working state of the single-pole three-throw switch 41 is set by the first dial switch 42, the operation can be more convenient, the reliability and stability of the control module 2 are improved, and even if one phase of the three-phase alternating current power supply fails, the normal operation of the control module 2 can be ensured by switching the power supply mode.

Fig. 4 is a schematic structural diagram of another power state recognition device according to an embodiment of the present invention, and referring to fig. 4, the power state recognition device 400 further includes a three-phase power indication module 5 based on the above embodiments; the three-phase power indication module 5 is connected between the three-phase ac power source and the neutral line N, and the three-phase power indication module 5 is used for indicating the power supply state of the three-phase ac power source.

The three-phase power supply indication module 5 comprises a first resistor R1, a second resistor R2, a third resistor R3, a first power supply indication lamp D1, a second power supply indication lamp D2 and a third power supply indication lamp D3, wherein a first end of the first resistor R1 is connected with a first phase A of a three-phase alternating current power supply, a second end of the first resistor R1 is connected with a first end of the first power supply indication lamp D1, and a second end of the first power supply indication lamp D1 is connected with a neutral line N; the first end of the second resistor R2 is connected with the second phase B of the three-phase alternating current power supply, the second end of the second resistor R2 is connected with the first end of the second power indicator lamp D2, and the second end of the second power indicator lamp D2 is connected with the neutral line N; the first end of the third resistor R3 is connected with a third phase C of the three-phase alternating current power supply, the second end of the third resistor R3 is connected with the first end of the third power indicator lamp D3, and the second end of the third power indicator lamp D3 is connected with the neutral line N; wherein, the first power indicator lamp D1, the second power indicator lamp D2 and the third power indicator lamp D3 have different light emitting colors.

The first resistor R1, the second resistor R2 and the third resistor R3 are used for limiting current so as to protect a later-stage circuit, and the first power indicator lamp D1, the second power indicator lamp D2 and the third power indicator lamp D3 are used for indicating whether the phase where the power indicator lamp is located is electrified or not.

Alternatively, the light emission colors of the first, second and third power indication lamps D1, D2 and D3 are one of blue light, green light and red light, respectively. The first power indicator D1 emits blue light, the second power indicator D2 emits green light, the third power indicator D3 emits red light, and when any two or three of the three-phase ac power supplies are turned on, the three-phase power indicator module 5 displays light of other colors according to the principle of superposition of the three primary colors. For example, when the first phase a and the second phase B are charged, they appear as cyan; when the second phase B and the third phase C are charged, they appear yellow; when the first phase a and the third phase C are charged, they appear purple; when the first phase a, the second phase B and the third phase C are all charged, they appear white. The color correspondence relation of the three-phase alternating current power supply indicator lamp is not particularly limited in this embodiment.

Specifically, the first power indicator lamp D1, the second power indicator lamp D2 and the third power indicator lamp D3 are respectively connected with the first phase a, the second phase B and the third phase C of the first three-phase ac power supply 100, and are used for indicating whether at least one phase of the first three-phase ac power supply 100 is electrified. Illustratively, when the power indicator light is displayed in blue, it indicates that the first phase a, the second phase B, and the third phase C of the first three-phase ac power source 100 are charged; when the power indicator is displayed as green, it indicates that the second phase B of the first three-phase ac power source 100 is charged and the first phase a and the third phase C are not charged; when the power indicator is displayed in red, it indicates that the third phase C of the first three-phase ac power source 100 is charged and that the first phase a and the second phase B are not charged; when the power indicator is displayed in cyan, both the first phase a and the second phase B of the first three-phase ac power supply 100 are charged, and the third phase C is not charged; when the power indicator is displayed as yellow, it indicates that both the second phase B and the third phase C of the first three-phase ac power supply 100 are charged, and the first phase a is not charged; when the power indicator light is displayed as purple, it indicates that the first phase a and the third phase C of the first three-phase ac power supply 100 are charged and the second phase B is not charged; when the power indicator is displayed as white, the first phase a, the second phase B, and the third phase C of the first three-phase ac power supply 100 are all charged.

According to the technical scheme provided by the embodiment, the power indicator lamps with different luminous colors are respectively connected between the three-phase alternating-current power supply and the neutral line N, the electrified condition of each phase of the three-phase alternating-current power supply can be correctly displayed, and the power indicator lamps are set to different colors, so that a user can intuitively know the current state of the power supply system, and potential safety hazards and ring network hidden hazards are avoided. Meanwhile, the luminous color of the power indicator lamp is set to be three primary colors, and the superposition principle of the colors can be utilized, so that the system structure is simplified, and the adjustability is stronger.

Fig. 5 is a schematic structural diagram of another power state recognition device according to an embodiment of the present invention, and referring to fig. 5, on the basis of the foregoing embodiments, the power state recognition device 400 further includes an alarm module 6, where the alarm module 6 is connected to the control module 2, and the alarm module 6 is configured to output an alarm signal when an operation state of the three-phase ac power supply is abnormal.

Specifically, the load type selecting module 1 selects a load type as a single-phase power supply load or a three-phase power supply load, the load type is input to the control module 2, the control module 2 detects the operation state of the first three-phase ac power supply 100 in real time and compares the detection result with the load type, and the state indicating module 3 further indicates the processed comparison result. If the preselected load type is inconsistent with the actual power supply state of the first three-phase alternating current power supply 100, an alarm reminding is performed through the alarm module 6.

Optionally, the power state identifying device 400 further includes a silencing module 7, where the silencing module 7 is connected to the alarm module 6, and the silencing module 7 is configured to reset the alarm module 6 after the alarm module 6 outputs an alarm signal.

Due to the existence of the silencing module 7, the alarm module 6 can be automatically reset when an alarm signal is output through the reset function of the silencing module 7.

Optionally, the automatic reset comprises time delay reset, and after a period of preset time delay, the system automatically restores to a normal power supply state after a fault or abnormality occurs; or, fault detection and reset, wherein the state of each key parameter of the system or the equipment is monitored, and when a fault or an abnormality is detected, a reset mechanism is automatically triggered to restore a normal power supply state. The present embodiment is not particularly limited thereto.

Alternatively, the alarm module 6 may comprise a buzzer.

According to the technical scheme provided by the embodiment, the alarm module 6 and the silencing module 7 are arranged, so that the control module 2 alarms through the alarm module 6 when detecting that the actual running state of the three-phase alternating current power supply is inconsistent with the load type, and the safety of equipment and personnel is protected. And the alarm module 6 can realize real-time monitoring and reminding functions, and once an abnormal condition is detected, an alarm signal is immediately sent out, so that potential loss is reduced. Meanwhile, the alarm module 6 is automatically reset through the silencing module 7, so that the system can be ensured to quickly recover the normal power supply state after the problem is solved, the downtime and production interruption are reduced, and the reliability and stability of the system are improved.

Fig. 6 is a schematic structural diagram of another power state identifying device according to an embodiment of the present invention, and referring to fig. 6, the power state identifying device provided in this embodiment includes: the system comprises a load type selection module 1, a control module 2, a state indication module 3, a power supply selection module 4, a three-phase power supply indication module 5, an alarm module 6 and a silencing module 7.

Specifically, the load type of the load L is selected by the load type selecting module 1, and the control module 2 is connected with one of the first three-phase ac power supplies 100 by the power supply selecting module 4, so that the first three-phase ac power supply 100 supplies power to the control module 2 normally. The control module 2 obtains the load type, detects the running state of the first three-phase alternating current power supply 100 in real time, and the control module 2 obtains a comparison result by comparing the detected running state of the first three-phase alternating current power supply 100 with the load type, and the state indication module 3 further indicates the processed comparison result. Meanwhile, the power supply state of the first three-phase alternating current power supply 100 is indicated by the three-phase power supply indication module 5. If the preselected load type is inconsistent with the actual state of the first three-phase alternating current power supply 100, the alarm module 6 is used for alarming, and the silencing module 7 is used for automatically resetting the alarm module 6 after the alarm module 6 outputs an alarm signal.

According to the technical scheme provided by the embodiment, through the load type selection module 1 and the power supply selection module 4, the control module 2 can be connected to a proper phase, so that the power supply quality of the three-phase alternating current power supply is ensured, and abnormal work caused by the problems of insufficient power supply or surplus power supply and the like is avoided. The control module 2 can detect the running state of the three-phase alternating current power supply in real time and compare the running state with a preselected load type, and the state indicating module 3 further indicates the processed comparison result, so that an operator can know the running state of the system in real time and take measures in time, and unnecessary shutdown and production interruption are avoided. When the preselected load type is inconsistent with the actual state, the alarm module 6 can timely send out an alarm signal to remind an operator of paying attention to the problem, so that potential safety risks or system faults are avoided, and safety of equipment and personnel is protected.

Fig. 7 is a schematic front structural view of a housing of a power state recognition device according to an embodiment of the present invention, and fig. 8 is a schematic back structural view of a housing of a power state recognition device according to an embodiment of the present invention. Referring to fig. 7 and 8, the power state recognition device 400 further includes a housing, the load type selection module 1 and the state indication module 3 are disposed on a first surface 501 of the housing, and a second surface 502 disposed opposite to the first surface 501 of the housing is provided with a connection terminal and a neutral line N terminal of a three-phase ac power supply; the wiring terminals correspond to the A phase, the B phase or the C phase of the three-phase alternating current power supply respectively. The first surface 501 of the shell is also provided with a reset switch 8, and the reset switch 8 is connected with the silencing module 7; the load type selection module 1 comprises a second dial switch.

The first surface 501 and the second surface 502 are opposite sides of the housing, for example, the first surface 501 is a front surface of the housing, which can be used to make it convenient for a worker to observe the power supply state of the three-phase ac power supply. The second surface 502 is the back of the housing, on which the three-phase ac power terminals and neutral N terminals are provided, and may be used for device power and load L power condition monitoring.

Optionally, the first surface 501 of the housing is provided with a first dial switch 42 for selecting one of the three phases of ac power to power the control module 2 according to the load type.

Optionally, the first surface 501 of the housing is provided with a three-phase power indication module 5 for indicating the power status of the three-phase ac power supply.

Specifically, the first surface 501 of the housing is provided with a load type selection module 1, a status indication module 3, a reset switch 8, a three-phase power indication module 5 and a power selection module 4, so as to identify the status of the first three-phase ac power 100 in real time and display the status at the corresponding position of the housing. At the first surface of the housing, the first status indicator lamp 31, the second status indicator lamp 32, the third status indicator lamp 33 and the fourth status indicator lamp 34 included in the status indicator module 3 may be disposed in a middle area of the first surface 501 of the housing, where each indicator lamp is sequentially arranged, and a corresponding character identifier is marked below each status indicator lamp, for example, a "normal" character is marked below the first status indicator lamp 31, a "single-phase" character is marked below the second status indicator lamp 32, a "open-phase" character is marked below the third status indicator lamp 33, and a "full-phase" character is marked below the fourth status indicator lamp 34, so as to facilitate observation. The three-phase power indication module 5 may be disposed above the first surface of the housing, and each power indication lamp is marked with a corresponding text identifier, for example, a first power indication lamp D1, a second power indication lamp D2, and a third power indication lamp D3. The first dial switch 42 may be disposed in a lower left area of the housing, the first dial switch 42 may be marked with words "a", "B" and "C" above the first dial switch 42, corresponding to the first phase a, the second phase B and the third phase C of the first three-phase ac power supply 100, the second dial switch 11 may be disposed in a lower right area of the first surface 501 of the housing, the second dial switch 11 may be marked with words "single phase" and "full phase" above the second dial switch 11, corresponding to different load types, and the second dial switch may further include a reset switch 8, which may be disposed in an upper right area of the first surface 501 of the housing, and may perform alarm reset through the reset switch 8 when an alarm occurs. Here, the reset switch 8 may be a key switch, and provides a trigger signal for the silencing module 7 through the key switch, so as to control the silencing module 7 to reset the alarm module 6.

Alternatively, the control module 2, the single pole three throw switch 41, the alarm module 6 and the muffler module 7 may be provided inside the housing.

According to the technical scheme provided by the embodiment, the three-phase alternating current power supply state can be detected, identified and indicated in real time, so that the safety of the system can be improved. Meanwhile, operators can timely find out abnormal power supply of the three-phase alternating current power supply, potential safety risks and equipment damage are prevented, and safety of equipment and personnel is protected.

Optionally, the present invention further provides a power state identifying method, which may be applied to the power state identifying device in any of the foregoing embodiments, and fig. 9 is a flowchart of a power state identifying method provided in an embodiment of the present invention, and referring to fig. 9, the power state identifying method includes the following steps:

s901, controlling a load type selection module to select the load type of the load.

S902, the control module detects the power supply state of the three-phase alternating current power supply in real time, and determines whether the running state of the three-phase alternating current power supply is abnormal or not according to the detected power supply state and the load type.

S903, a control state indicating module indicates the operation state of the three-phase alternating current power supply.

According to the technical scheme provided by the embodiment of the invention, the power supply state identification devices 400 are respectively arranged on two sides of the two-way power supply system, the control module 2 in each side of the power supply state identification device 400 is respectively connected with the load type selection module 1 and the corresponding three-phase alternating current power supply, when the load L is connected into the power supply system, the load type of the load L is selected through the load type selection module 1 and is input into the control module 2, the control module 2 detects the power supply state of the three-phase alternating current power supply in real time, and then compares the power supply state with the preselected load type to determine whether the running state of the three-phase alternating current power supply is abnormal or not, and the current running state of the three-phase alternating current power supply is displayed through the state indication module 3. Compared with the prior art, the technical scheme provided by the embodiment is that the load type is selected in advance through the load type selection module 1, whether the running state of the power supply is abnormal or not is determined through the control module according to the detected power supply state and the load type of the three-phase alternating current power supply, the current running state of the power supply is indicated through the state indication module 3, the charged condition of the load side can be judged through the indication result of the state indication module 3, the condition that the charged condition cannot be correctly displayed due to the fact that the indicator lamp is not corresponding to the single-phase charged condition of the load L is not needed in the construction process, and the reliability and the safety of the system are improved. Meanwhile, hidden danger of the ring network can be detected, and running risk is reduced.

Fig. 10 is a flowchart of another power state identifying method according to an embodiment of the present invention, referring to fig. 10, on the basis of the above embodiment, optionally, step S902 specifically includes:

S101, a control module detects the power supply state of the three-phase alternating current power supply in real time.

And S102, if the power supply state is consistent with the load type, determining that the operation state of the three-phase alternating current power supply is normal.

And S103, if the power supply state is inconsistent with the load type, determining that the operation state of the three-phase alternating current power supply is abnormal.

Optionally, before step S902, the method further includes:

And S104, the control power supply selection module selects one phase of the three-phase alternating current power supply to supply power to the control module according to the load type.

According to the technical scheme provided by the embodiment, the control module 2 detects the power supply state of the three-phase alternating current power supply in real time and is further represented by the state indicator lamp, so that abnormal conditions in the power supply system can be found and identified in time, and the reliability and safety of the power supply system are improved. Meanwhile, the power supply selection module 4 selects a proper power supply to supply power to the control module according to different load types, other power supplies are not required to be introduced, the circuit structure is simplified, and the reliability and stability of the control module 2 are improved.

Fig. 11 is a flowchart of another power status recognition method according to an embodiment of the present invention, and referring to fig. 11, specifically, the load type selection module 1 selects a load type of the load L as a single-phase power supply load or a three-phase power supply load, and the control power supply selection module 4 selects one of phases a, B or C of the first three-phase ac power supply 100 to supply power to the control module 2 according to the load type. The control module 2 acquires the load type and detects the running state of the first three-phase alternating current power supply 100 in real time, and the control module 2 further detects whether the running state of the first three-phase alternating current power supply 100 is consistent with the load type and further indicates the result through the state indication module 3, wherein the power supply state of the first three-phase alternating current power supply 100 is indicated by the three-phase power supply indication module 5. If the detection results are consistent, the operation state of the first three-phase ac power supply 100 is normal, and the normal lamp of the state indication module 3 is turned on. If the detection results are inconsistent, the running state of the first three-phase alternating current power supply 100 is abnormal, and the one-way lamp, the phase-missing lamp or the full-phase lamp of the state indication module 3 is on, so that alarm reminding is carried out. The present embodiment includes the identification method of the power state identification device provided by any embodiment of the present invention, and therefore, the present invention also has the advantages provided by any embodiment described above.

Optionally, the invention further provides a power supply system. With continued reference to fig. 1, on the basis of the above embodiments, the power supply system includes the power state recognition device 400 in any of the above embodiments. The power supply system further comprises a first three-phase alternating current power supply 100, a first air switch 201, a load, a second three-phase alternating current power supply 101 and a second air switch 201, wherein the first air switch 200 is connected between the first three-phase alternating current power supply 100 and a first terminal row 300, the first terminal row 300 is connected with a load L, the second air switch 201 is connected between the second three-phase alternating current power supply 101 and a second terminal row 301, and the second terminal row 301 is connected with the load L; one side of the first terminal row 300 connected to the first air switch 200 is connected to a power state recognition device 400, and one side of the second terminal row 301 connected to the second air switch 201 is connected to another power state recognition device 400.

Wherein the first terminal block 300 and the second terminal block 301 are used to safely and reliably connect the first three-phase ac 100 and the second three-phase ac 101 to the load L, and form an electrical connection.

Alternatively, the terminal block is usually provided with a fixed wiring hole or socket, and can be directly inserted into or fixed to the electric wire, without welding or other complicated connection modes, so that the circuit wiring process can be simplified, the wiring efficiency can be improved, and the maintenance and the replacement can be facilitated. The present embodiment is not particularly limited thereto.

Optionally, the power state recognition device 400 further includes a three-phase power indication module 5; the three-phase power indication module 5 is connected between the three-phase ac power source and the neutral line, and the three-phase power indication module 400 is used for indicating the power supply state of the three-phase ac power source.

Specifically, the power supply system uses two independent power sources to supply power to the system, so as to supply power to the load L, and the three-phase power indication module 5 is connected to the first three-phase ac power source 100 and the second three-phase ac power source 101 respectively, so as to indicate the current state of the three-phase ac power source in real time.

According to the technical scheme provided by the embodiment of the invention, the power supply state identification devices 400 are respectively arranged on two sides of the two-way power supply system, the control module 2 in each side of the power supply state identification device 400 is respectively connected with the load type selection module 1 and the corresponding three-phase alternating current power supply, when a load L is connected into the power supply system, the load type is selected through the load type selection module 1 and is input into the control module 2, the control module 2 detects the power supply state of the three-phase alternating current power supply in real time, and then compares the power supply state with the preselected load type to determine whether the running state of the three-phase alternating current power supply is abnormal or not, and the current running state of the three-phase alternating current power supply is displayed through the state indication module 3. Compared with the prior art, the technical scheme provided by the embodiment is that the load type is selected in advance through the load type selection module 1, whether the running state of the power supply is abnormal or not is determined through the control module according to the detected power supply state and the load type of the three-phase alternating current power supply, the current running state of the power supply is indicated through the state indication module 3, the charged condition of the load side can be judged through the indication result of the state indication module 3, the condition that the charged condition cannot be correctly displayed due to the fact that the indicator lamp is not corresponding to the single-phase charged condition of the load L is not needed in the construction process, and the reliability and the safety of the system are improved. Meanwhile, hidden danger of the ring network can be detected, and running risk is reduced.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The power supply state identification device is characterized by being applied to a power supply system, wherein the power supply system comprises a three-phase alternating current power supply, an air switch and a load which are sequentially connected in series; the power state recognition device includes:

The load type selection module is used for selecting the load type of the load; wherein the load types include single-phase power supply loads and three-phase power supply loads;

the control module is respectively connected with the load type selection module and the three-phase alternating current power supply, and is used for detecting the power supply state of the three-phase alternating current power supply in real time and determining whether the running state of the three-phase alternating current power supply is abnormal or not according to the detected power supply state and the load type;

the state indicating module is connected with the control module and is used for indicating the running state of the three-phase alternating current power supply.

2. The power state recognition device according to claim 1, wherein the operating state of the three-phase alternating current power supply includes: normal operation state, single-phase operation state, open-phase operation state and full-phase operation state;

The state indicating module comprises a first state indicating lamp, a second state indicating lamp, a third state indicating lamp and a fourth state indicating lamp, wherein each state indicating lamp is connected with the control module, and one state indicating lamp corresponds to one running state.

3. The power state identification device of claim 1, further comprising a power selection module coupled between the three-phase ac power source and the control module, the power selection module configured to select one of the three-phase ac power sources to power the control module based on the load type.

4. The power state identification device of claim 3, wherein the power selection module comprises a single pole, triple throw switch and a first dial switch;

The three input ends of the single-pole three-throw switch are respectively connected with a first phase, a second phase and a third phase of the three-phase alternating current power supply, and the output end of the single-pole three-throw switch is connected with the control module;

The first dial switch is connected with the control end of the single-pole three-throw switch.

5. The power state recognition device of claim 1, further comprising a three-phase power indication module;

The three-phase power supply indication module is connected between the three-phase alternating current power supply and a neutral line and is used for indicating the power supply state of the three-phase alternating current power supply;

The three-phase power supply indication module comprises a first resistor, a second resistor, a third resistor, a first power supply indication lamp, a second power supply indication lamp and a third power supply indication lamp, wherein the first end of the first resistor is connected with a first phase of the three-phase alternating current power supply, the second end of the first resistor is connected with the first end of the first power supply indication lamp, and the second end of the first power supply indication lamp is connected with the neutral line; the first end of the second resistor is connected with a second phase of the three-phase alternating current power supply, the second end of the second resistor is connected with the first end of the second power supply indicator lamp, and the second end of the second power supply indicator lamp is connected with the neutral line; the first end of the third resistor is connected with a third phase of the three-phase alternating current power supply, the second end of the third resistor is connected with the first end of the third power supply indicator lamp, and the second end of the third power supply indicator lamp is connected with the neutral line;

the first power indicator lamp, the second power indicator lamp and the third power indicator lamp have different light-emitting colors.

6. The power state recognition device according to claim 1, further comprising an alarm module connected to the control module, the alarm module being configured to output an alarm signal when an operation state of the three-phase ac power supply is abnormal;

the power state identification device further comprises a silencing module, wherein the silencing module is connected with the alarm module and used for resetting the alarm module after the alarm module outputs the alarm signal.

7. The power state recognition device according to claim 6, further comprising a housing, wherein the load type selection module and the state indication module are provided on a first surface of the housing, and a second surface provided opposite to the first surface of the housing is provided with a connection terminal and a neutral terminal of the three-phase alternating current power supply;

the first surface of the shell is also provided with a reset switch, and the reset switch is connected with the silencing module;

the load type selection module includes a second dial switch.

8. A power state recognition method, characterized by being applied to the power state recognition device according to any one of claims 1 to 7;

The power supply state identification method comprises the following steps:

Controlling the load type selection module to select the load type of the load;

the control module is controlled to detect the power supply state of the three-phase alternating current power supply in real time, and whether the operation state of the three-phase alternating current power supply is abnormal or not is determined according to the detected power supply state and the load type;

and controlling the state indicating module to indicate the running state of the three-phase alternating current power supply.

9. The power state recognition method according to claim 8, wherein the controlling the control module to detect a power supply state of the three-phase ac power in real time, and determining whether an operation state of the three-phase ac power is abnormal according to the detected power supply state and the load type comprises:

the control module is controlled to detect the power supply state of the three-phase alternating current power supply in real time;

if the power supply state is consistent with the load type, determining that the operation state of the three-phase alternating current power supply is normal;

if the power supply state is inconsistent with the load type, determining that the operation state of the three-phase alternating current power supply is abnormal;

The power state recognition device further comprises a power selection module;

before determining the operation state of the three-phase alternating current power supply, the power supply state identification method further comprises:

and controlling the power supply selection module to select one phase of the three-phase alternating current power supply to supply power to the control module according to the load type.

10. A power supply system comprising the power supply state identifying apparatus of any one of claims 1 to 7;

The power supply system further comprises a first three-phase alternating current power supply, a first air switch, a load, a second three-phase alternating current power supply and a second air switch, wherein the first air switch is connected between the first three-phase alternating current power supply and a first terminal row, the first terminal row is connected with the load, the second air switch is connected between the second three-phase alternating current power supply and a second terminal row, and the second terminal row is connected with the load;

One side of the first terminal row connected with the first air switch is connected with one power state identification device, and one side of the second terminal row connected with the second air switch is connected with the other power state identification device.