Generator set power transmitter optimization circuit

Abstract

The embodiment of the utility model discloses a generator set power transmitter optimization circuit. In one specific embodiment, the circuit comprises a generator set, a first power transmitter, a second power transmitter, a third power transmitter, a standby power transmitter, a fourth contactor, an eighth contactor and a control module. According to the acquisition circuit of the multiple power transmitters provided by the embodiment of the invention, multi-channel power data monitoring is realized, and stable operation of a generator set is prevented from being influenced when a single power transmitter fails; meanwhile, the utility model also provides a circuit in which the standby power transmitter is put into use, so that the standby power transmitter can be put into use or stopped from being put into use optionally in any required state (such as a fault of a certain power transmitter), and the reliability of power data acquisition is further improved.

Description

Technical Field

[0001] The utility model relates to the field of power transmitter optimization, and more specifically, to a power transmitter optimization circuit for a generator set. Background Art

[0002] Currently, generator set power transmitters frequently malfunction due to aging, voltage fluctuations, or excessive temperatures. This can cause abnormal output data, potentially leading to sudden changes in the generator set load, directly impacting DEH regulation and stable operation. Furthermore, abnormal data can trigger the generator set's protection mechanisms, potentially leading to the unit's disconnection. Utility Model Content

[0003] The purpose of the utility model is to provide a power transmitter optimization circuit for a generator set, so as to solve the problem in the prior art that a power transmitter failure affects the unstable operation of the generator set.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The first aspect of the present invention provides a generator set power transmitter optimization circuit, comprising:

[0006] A generator set, a first power transmitter, a second power transmitter, a third power transmitter, a standby power transmitter, a fourth contactor, an eighth contactor, and a control module;

[0007] The first current monitoring input terminal of the first power transmitter is connected to the first monitored terminal of the generator set; the second current monitoring input terminal of the first power transmitter is connected to the second monitored terminal of the generator set; the first current monitoring output terminal of the first power transmitter is connected to the first current monitoring input terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to the second current monitoring input terminal of the second power transmitter; the first current monitoring output terminal of the second power transmitter is connected to the first current monitoring input terminal of the third power transmitter; and the second current monitoring output terminal of the second power transmitter is connected to the second current monitoring input terminal of the third power transmitter;

[0008] The first current monitoring output end of the third power transmitter is connected to one end of the first normally closed contact of the fourth contactor and one end of the first normally open contact of the fourth contactor; the second current monitoring output end of the third power transmitter is connected to one end of the second normally closed contact of the fourth contactor and one end of the second normally open contact of the fourth contactor; the other end of the first normally closed contact of the fourth contactor is connected to the first current monitoring input end of the standby power transmitter; the other end of the second normally closed contact of the fourth contactor is connected to the second current monitoring input end of the standby power transmitter; the other end of the first normally open contact of the fourth contactor is connected to the first current monitoring output end of the standby power transmitter; the other end of the second normally open contact of the fourth contactor is connected to the second current monitoring output end of the standby power transmitter;

[0009] The three-phase voltage monitoring end of the first power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the second power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the third power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the eighth contactor; the other end of the three-phase normally open contact of the eighth contactor is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set;

[0010] The communication end of the control module is connected to the communication end of the first power transmitter, the communication end of the second power transmitter, the communication end of the third power transmitter and the communication end of the standby power transmitter;

[0011] The common power supply terminal of the control module is connected to the first end of the first power supply, the fourth output terminal of the control module is connected to one end of the coil of the fourth contactor, the eighth output terminal is connected to one end of the coil of the eighth contactor, and the other end of the coil of the fourth contactor and the other end of the coil of the eighth contactor are respectively connected to the second end of the first power supply.

[0012] Preferably, the circuit further comprises a first contactor, a second contactor, a third contactor, a fifth contactor, a sixth contactor and a seventh contactor;

[0013] The first end to be monitored of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first contactor; the other end of the first normally closed contact of the first contactor is connected to the first current monitoring input end of the first power transmitter; the other end of the first normally open contact of the first contactor is connected to the first current monitoring output end of the first power transmitter; the second end to be monitored of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first contactor; the other end of the second normally closed contact of the first contactor is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first contactor is connected to the second current monitoring output end of the first power transmitter;

[0014] The first current monitoring output terminal of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second contactor; the other end of the first normally closed contact of the second contactor is connected to the first current monitoring input terminal of the second power transmitter; the other end of the first normally open contact of the second contactor is connected to the first current monitoring output terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second contactor; the other end of the second normally closed contact of the second contactor is connected to the second current monitoring input terminal of the second power transmitter; the other end of the second normally open contact of the second contactor is connected to the second current monitoring output terminal of the second power transmitter;

[0015] The first current monitoring output terminal of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third contactor; the other end of the first normally closed contact of the third contactor is connected to the first current monitoring input terminal of the third power transmitter; the other end of the first normally open contact of the third contactor is connected to the first current monitoring output terminal of the third power transmitter; the second current monitoring output terminal of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third contactor; the other end of the second normally closed contact of the third contactor is connected to the second current monitoring input terminal of the third power transmitter; the other end of the second normally open contact of the third contactor is connected to the second current monitoring output terminal of the third power transmitter;

[0016] The three-phase voltage monitoring terminal of the first power transmitter is connected to one end of the three-phase normally open contact of the fifth contactor; the other end of the three-phase normally open contact of the fifth contactor is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0017] The three-phase voltage monitoring terminal of the second power transmitter is connected to one end of the three-phase normally open contact of the sixth contactor; the other end of the three-phase normally open contact of the sixth contactor is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0018] The three-phase voltage monitoring terminal of the third power transmitter is connected to one end of the three-phase normally open contact of the seventh contactor; the other end of the three-phase normally open contact of the seventh contactor is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set;

[0019] The first output end of the control module is connected to one end of the coil of the first contactor, the second output end is connected to one end of the coil of the second contactor, the third output end is connected to one end of the coil of the third contactor, the fifth output end is connected to one end of the coil of the fifth contactor, the sixth output end is connected to one end of the coil of the sixth contactor, and the seventh output end is connected to one end of the coil of the seventh contactor; the second end of the first power supply is connected to the other end of the coil of the first contactor, the other end of the coil of the second contactor, the other end of the coil of the third contactor, the other end of the coil of the fifth contactor, the other end of the coil of the sixth contactor, and the other end of the coil of the seventh contactor.

[0020] Preferably, the circuit further comprises a first manual switch, a second manual switch, a third manual switch, a fourth manual switch, a first circuit breaker, a second circuit breaker, a third circuit breaker and a fourth circuit breaker;

[0021] The first monitored end of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first manual switch; the other end of the first normally closed contact of the first manual switch is connected to the first current monitoring input end of the first power transmitter; the other end of the first normally open contact of the first manual switch is connected to the first current monitoring output end of the first power transmitter; the second monitored end of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first manual switch; the other end of the second normally closed contact of the first manual switch is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first manual switch is connected to the second current monitoring output end of the first power transmitter;

[0022] The first current monitoring output terminal of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second manual switch; the other end of the first normally closed contact of the second manual switch is connected to the first current monitoring input terminal of the second power transmitter; the other end of the first normally open contact of the second manual switch is connected to the first current monitoring output terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second manual switch; the other end of the second normally closed contact of the second manual switch is connected to the second current monitoring input terminal of the second power transmitter; the other end of the second normally open contact of the second manual switch is connected to the second current monitoring output terminal of the second power transmitter;

[0023] The first current monitoring output terminal of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third manual switch; the other end of the first normally closed contact of the third manual switch is connected to the first current monitoring input terminal of the third power transmitter; the other end of the first normally open contact of the third manual switch is connected to the first current monitoring output terminal of the third power transmitter; the second current monitoring output terminal of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third manual switch; the other end of the second normally closed contact of the third manual switch is connected to the second current monitoring input terminal of the third power transmitter; the other end of the second normally open contact of the third manual switch is connected to the second current monitoring output terminal of the third power transmitter;

[0024] The first current monitoring output end of the third power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the fourth manual switch; the other end of the first normally closed contact of the fourth manual switch is connected to the first current monitoring input end of the standby power transmitter; the other end of the first normally open contact of the fourth manual switch is connected to the first current monitoring output end of the standby power transmitter; the second current monitoring output end of the third power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the fourth manual switch; the other end of the second normally closed contact of the fourth manual switch is connected to the second current monitoring input end of the standby power transmitter; the other end of the second normally open contact of the fourth manual switch is connected to the second current monitoring output end of the standby power transmitter;

[0025] The three-phase voltage monitoring terminal of the first power transmitter is connected to one end of the three-phase normally open contact of the first circuit breaker; the other end of the three-phase normally open contact of the first circuit breaker is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0026] The three-phase voltage monitoring terminal of the second power transmitter is connected to one end of the three-phase normally open contact of the second circuit breaker; the other end of the three-phase normally open contact of the second circuit breaker is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0027] The three-phase voltage monitoring terminal of the third power transmitter is connected to one end of the three-phase normally open contact of the third circuit breaker; the other end of the three-phase normally open contact of the third circuit breaker is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0028] The three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the fourth circuit breaker; the other end of the three-phase normally open contact of the fourth circuit breaker is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set.

[0029] Preferably, contact surfaces of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the sixth contactor, the seventh contactor and the eighth contactor are gold-plated.

[0030] Preferably, the first manual switch, the second manual switch, the third manual switch and the fourth manual switch are push button switches with two open and two closed contacts respectively.

[0031] Preferably, the circuit further includes a second power supply, a ninth relay and a fault alarm indicator light;

[0032] The ninth output terminal of the control module is connected to one end of the coil of the ninth relay, and the other end of the coil of the ninth relay is connected to the second end of the first power supply;

[0033] The first end of the second power supply is connected to one end of the normally open contact of the ninth relay, the other end of the normally open contact of the ninth relay is connected to one end of the fault alarm indicator light, and the other end of the fault alarm indicator light is connected to the second end of the second power supply.

[0034] Preferably, the first power transmitter, the second power transmitter, the third power transmitter and the standby power transmitter are digital active power transmitters respectively.

[0035] Preferably, the communication end of the control module, the communication end of the first power transmitter, the communication end of the second power transmitter, the communication end of the third power transmitter and the communication end of the standby power transmitter are communication ends of the 485 interface respectively.

[0036] Preferably, the circuit further comprises a first fuse, a second fuse and a third fuse;

[0037] One end of the first fuse is connected to the first monitored terminal of the generator set, and the other end is respectively connected to the first three-phase voltage monitoring terminal of the first power transmitter, the first three-phase voltage monitoring terminal of the second power transmitter, the first three-phase voltage monitoring terminal of the third power transmitter, and the first three-phase voltage monitoring terminal of the standby power transmitter;

[0038] One end of the second fuse is connected to the second monitored terminal of the generator set, and the other end is respectively connected to the second three-phase voltage monitoring terminal of the first power transmitter, the second three-phase voltage monitoring terminal of the second power transmitter, the second three-phase voltage monitoring terminal of the third power transmitter, and the second three-phase voltage monitoring terminal of the standby power transmitter;

[0039] One end of the third fuse is connected to the third end to be detected of the generator set, and the other end is respectively connected to the third three-phase voltage monitoring end of the first power transmitter, the third three-phase voltage monitoring end of the second power transmitter, the third three-phase voltage monitoring end of the third power transmitter and the third three-phase voltage monitoring end of the standby power transmitter.

[0040] Preferably, the first fuse, the second fuse and the third fuse are respectively self-resetting fuses.

[0041] The beneficial effects of the utility model are as follows:

[0042] The utility model provides an acquisition circuit for multiple power transmitters to realize multi-channel monitoring of power data, thereby preventing the stable operation of the generator set from being affected by the failure of a single power transmitter; at the same time, the utility model also provides a circuit for putting a backup power transmitter into use, so that in any required state (such as a failure of a power transmitter), the backup power transmitter can be optionally put into use or stopped from being put into use, thereby further increasing the reliability of power data acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] Figure 1 The optimized circuit diagram of the power transmitter of the generator set according to the first embodiment of the present utility model is shown.

[0045] Figure 2 A circuit diagram showing the connection of the control module of the present invention.

[0046] Figure 3 The optimized circuit diagram of the power transmitter of the generator set according to the second embodiment of the present utility model is shown.

[0047] Figure 4 The optimized circuit diagram of the power transmitter of the generator set according to the third embodiment of the present utility model is shown.

[0048] Figure 5 The circuit diagram of the fault alarm indicator light of the present utility model is shown. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the following detailed description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0050] Example 1

[0051] like Figure 1 As shown, one embodiment of the present invention provides a generator set power transmitter optimization circuit, comprising:

[0052] Generator set, first power transmitter, second power transmitter, third power transmitter, standby power transmitter, fourth contactor KM4, eighth contactor KM8 and control module;

[0053] The first current monitoring input terminal of the first power transmitter is connected to the first terminal to be monitored of the generator set; the second current monitoring input terminal of the first power transmitter is connected to the second terminal to be monitored of the generator set; the first current monitoring output terminal of the first power transmitter is connected to the first current monitoring input terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to the second current monitoring input terminal of the second power transmitter; the first current monitoring output terminal of the second power transmitter is connected to the first current monitoring input terminal of the third power transmitter; and the second current monitoring output terminal of the second power transmitter is connected to the second current monitoring input terminal of the third power transmitter;

[0054] The first current monitoring output end of the third power transmitter is connected to one end of the first normally closed contact of the fourth contactor KM4 and one end of the first normally open contact of the fourth contactor KM4; the second current monitoring output end of the third power transmitter is connected to one end of the second normally closed contact of the fourth contactor KM4 and one end of the second normally open contact of the fourth contactor KM4; the other end of the first normally closed contact of the fourth contactor KM4 is connected to the first current monitoring input end of the standby power transmitter; the other end of the second normally closed contact of the fourth contactor KM4 is connected to the second current monitoring input end of the standby power transmitter; the other end of the first normally open contact of the fourth contactor KM4 is connected to the first current monitoring output end of the standby power transmitter; the other end of the second normally open contact of the fourth contactor KM4 is connected to the second current monitoring output end of the standby power transmitter;

[0055] The three-phase voltage monitoring end of the first power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the second power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the third power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set; the three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the eighth contactor KM8; the other end of the three-phase normally open contact of the eighth contactor KM8 is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set;

[0056] like Figure 2As shown, the communication end of the control module is connected to the communication end of the first power transmitter, the communication end of the second power transmitter, the communication end of the third power transmitter and the communication end of the standby power transmitter;

[0057] The common power supply terminal of the control module is connected to the first terminal L1 of the first power supply, the fourth output terminal of the control module is connected to one end of the coil of the fourth contactor KM4, the eighth output terminal is connected to one end of the coil of the eighth contactor KM8, the other end of the coil of the fourth contactor KM4 and the other end of the coil of the eighth contactor KM8 are respectively connected to the second terminal N1 of the first power supply.

[0058] The first power supply is an external power supply, which supplies power to the control circuit;

[0059] The working principle of the present utility model is as follows: In the initial state, the control module drives the coil of the fourth contactor KM4 to be energized and attracted, so that the first normally open contact and the second normally open contact of the fourth contactor KM4 are closed, and the circuit in which it is located short-circuit the current monitoring circuit of the backup power transmitter. By disconnecting the first normally closed contact and the second normally closed contact of the fourth contactor KM4, the current collection circuit of the backup power transmitter is disconnected. At the same time, the eighth contactor KM8 is not energized, so the voltage collection circuit of the backup power transmitter is disconnected, which makes the backup power transmitter unavailable for use. The control module reads the data of the first transmitter, the second transmitter, and the third transmitter respectively through the 485 interface, generates three redundant signals, and sends them to the voting logic unit of the control module for processing. The voting logic unit votes on these three signals according to a preset rule (i.e., three out of two). If two of the signals meet the conditions (such as reaching a preset threshold), the voting logic unit outputs the signal that meets the conditions and outputs it. When the control module determines that one of the three redundant signals has been in an abnormal state within a preset time (such as not reaching a preset threshold), the coil of the fourth contactor KM4 is driven to be de-energized through the fourth output terminal and the coil of the eighth contactor KM8 is driven to be energized through the eighth output terminal, and the standby power transmitter is put into use. At the same time, the control module starts to collect data from the standby power transmitter and stops collecting data from the abnormal power transmitter.

[0060] The utility model provides an acquisition circuit for multiple power transmitters to realize multi-channel monitoring of power data, thereby preventing the stable operation of the generator set from being affected by the failure of a single power transmitter; at the same time, the utility model also provides a circuit for putting a backup power transmitter into use, so that in any required state (such as a failure of a power transmitter), the backup power transmitter can be optionally put into use or stopped from being put into use, thereby further increasing the reliability of power data acquisition.

[0061] At the same time, the four power transmitters of the present invention, while ensuring data reliability (one of them is a backup power transmitter, and three power transmitters are the minimum value for performing logical judgment of data anomalies), also reduce the high investment cost caused by too many power transmitters.

[0062] Example 2

[0063] In one possible implementation, Figure 3 As shown, the circuit further includes a first contactor KM1, a second contactor KM2, a third contactor KM3, a fifth contactor KM5, a sixth contactor KM6 and a seventh contactor KM7;

[0064] The first end to be monitored of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first contactor KM1; the other end of the first normally closed contact of the first contactor KM1 is connected to the first current monitoring input end of the first power transmitter; the other end of the first normally open contact of the first contactor KM1 is connected to the first current monitoring output end of the first power transmitter; the second end to be monitored of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first contactor KM1; the other end of the second normally closed contact of the first contactor KM1 is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first contactor KM1 is connected to the second current monitoring output end of the first power transmitter;

[0065] The first current monitoring output end of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second contactor KM2; the other end of the first normally closed contact of the second contactor KM2 is connected to the first current monitoring input end of the second power transmitter; the other end of the first normally open contact of the second contactor KM2 is connected to the first current monitoring output end of the second power transmitter; the second current monitoring output end of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second contactor KM2; the other end of the second normally closed contact of the second contactor KM2 is connected to the second current monitoring input end of the second power transmitter; the other end of the second normally open contact of the second contactor KM2 is connected to the second current monitoring output end of the second power transmitter;

[0066] The first current monitoring output end of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third contactor KM3; the other end of the first normally closed contact of the third contactor KM3 is connected to the first current monitoring input end of the third power transmitter; the other end of the first normally open contact of the third contactor KM3 is connected to the first current monitoring output end of the third power transmitter; the second current monitoring output end of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third contactor KM3; the other end of the second normally closed contact of the third contactor KM3 is connected to the second current monitoring input end of the third power transmitter; the other end of the second normally open contact of the third contactor KM3 is connected to the second current monitoring output end of the third power transmitter;

[0067] The three-phase voltage monitoring terminal of the first power transmitter is connected to one end of the three-phase normally open contact of the fifth contactor KM5; the other end of the three-phase normally open contact of the fifth contactor KM5 is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0068] The three-phase voltage monitoring end of the second power transmitter is connected to one end of the three-phase normally open contact of the sixth contactor KM6; the other end of the three-phase normally open contact of the sixth contactor KM6 is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set;

[0069] The three-phase voltage monitoring end of the third power transmitter is connected to one end of the three-phase normally open contact of the seventh contactor KM7; the other end of the three-phase normally open contact of the seventh contactor KM7 is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be detected of the generator set;

[0070] The first output end of the control module is connected to one end of the coil of the first contactor KM1, the second output end is connected to one end of the coil of the second contactor KM2, the third output end is connected to one end of the coil of the third contactor KM3, the fifth output end is connected to one end of the coil of the fifth contactor KM5, the sixth output end is connected to one end of the coil of the sixth contactor KM6, and the seventh output end is connected to one end of the coil of the seventh contactor KM7; the second end N1 of the first power supply is connected to the other end of the coil of the first contactor KM1, the other end of the coil of the second contactor KM2, the other end of the coil of the third contactor KM3, the other end of the coil of the fifth contactor KM5, the other end of the coil of the sixth contactor KM6, and the other end of the coil of the seventh contactor KM7.

[0071] The working principle of this embodiment is as follows: in the initial state, the coils of the first contactor KM1, the second contactor KM2, and the third contactor KM3 are all de-energized, and at the same time, the control module drives the coils of the fifth contactor KM5, the sixth contactor KM6, and the seventh contactor KM7 to be energized, so as to put the first power transmitter, the second power transmitter, and the third power transmitter into use; in Example 1, when the control module detects that the first power transmitter has failed, the control module drives the coil of the first contactor KM1 to be energized through the first output terminal, and drives the fifth contactor KM5 to be de-energized through the fifth output terminal, so that the first power transmitter stops being put into use;

[0072] In this embodiment, the first contactor KM1, the second contactor KM2, the third contactor KM3, the fifth contactor KM5, the sixth contactor KM6 and the seventh contactor KM7 enable the first power transmitter, the second power transmitter and the third power transmitter to dynamically adjust the use status of each power transmitter according to usage requirements (such as a power transmitter failure), and promptly cut off the power transmitter in use (such as a faulty power transmitter) to prevent the cut-off power transmitter from affecting the collection of data from other transmitters, and also facilitate maintenance.

[0073] Example 3

[0074] In one possible implementation, Figure 4 As shown, the circuit further includes a first manual switch SB1, a second manual switch SB2, a third manual switch SB3, a fourth manual switch SB4, a first circuit breaker QF1, a second circuit breaker QF2, a third circuit breaker QF3 and a fourth circuit breaker QF4;

[0075] The first end to be monitored of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first manual switch SB1; the other end of the first normally closed contact of the first manual switch SB1 is connected to the first current monitoring input end of the first power transmitter; the other end of the first normally open contact of the first manual switch SB1 is connected to the first current monitoring output end of the first power transmitter; the second end to be monitored of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first manual switch SB1; the other end of the second normally closed contact of the first manual switch SB1 is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first manual switch SB1 is connected to the second current monitoring output end of the first power transmitter;

[0076] The first current monitoring output terminal of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second manual switch SB2; the other end of the first normally closed contact of the second manual switch SB2 is connected to the first current monitoring input terminal of the second power transmitter; the other end of the first normally open contact of the second manual switch SB2 is connected to the first current monitoring output terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second manual switch SB2; the other end of the second normally closed contact of the second manual switch SB2 is connected to the second current monitoring input terminal of the second power transmitter; the other end of the second normally open contact of the second manual switch SB2 is connected to the second current monitoring output terminal of the second power transmitter;

[0077] The first current monitoring output terminal of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third manual switch SB3; the other end of the first normally closed contact of the third manual switch SB3 is connected to the first current monitoring input terminal of the third power transmitter; the other end of the first normally open contact of the third manual switch SB3 is connected to the first current monitoring output terminal of the third power transmitter; the second current monitoring output terminal of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third manual switch SB3; the other end of the second normally closed contact of the third manual switch SB3 is connected to the second current monitoring input terminal of the third power transmitter; the other end of the second normally open contact of the third manual switch SB3 is connected to the second current monitoring output terminal of the third power transmitter;

[0078] The first current monitoring output terminal of the third power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the fourth manual switch SB4; the other end of the first normally closed contact of the fourth manual switch SB4 is connected to the first current monitoring input terminal of the standby power transmitter; the other end of the first normally open contact of the fourth manual switch SB4 is connected to the first current monitoring output terminal of the standby power transmitter; the second current monitoring output terminal of the third power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the fourth manual switch SB4; the other end of the second normally closed contact of the fourth manual switch SB4 is connected to the second current monitoring input terminal of the standby power transmitter; the other end of the second normally open contact of the fourth manual switch SB4 is connected to the second current monitoring output terminal of the standby power transmitter;

[0079] The three-phase voltage monitoring terminal of the first power transmitter is connected to one end of the three-phase normally open contact of the first circuit breaker QF1; the other end of the three-phase normally open contact of the first circuit breaker QF1 is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0080] The three-phase voltage monitoring terminal of the second power transmitter is connected to one end of the three-phase normally open contact of the second circuit breaker QF2; the other end of the three-phase normally open contact of the second circuit breaker QF2 is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0081] The three-phase voltage monitoring terminal of the third power transmitter is connected to one end of the three-phase normally open contact of the third circuit breaker QF3; the other end of the three-phase normally open contact of the third circuit breaker QF3 is respectively connected to the first terminal to be monitored, the second terminal to be monitored and the third terminal to be detected of the generator set;

[0082] The three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the fourth circuit breaker QF4; the other end of the three-phase normally open contact of the fourth circuit breaker QF4 is respectively connected to the first to-be-monitored end, the second to-be-monitored end and the third to-be-detected end of the generator set.

[0083] In this embodiment, the positions of the relays in the first and second embodiments are replaced or manually operated switches are connected in series, namely, a first manual switch SB1, a second manual switch SB2, a third manual switch SB3, a fourth manual switch SB4, a first circuit breaker QF1, a second circuit breaker QF2, a third circuit breaker QF3, and a fourth circuit breaker QF4;

[0084] This implementation method realizes the online replacement and maintenance of each power transmitter. Figure 4 The first power transmitter is repaired under the following circumstances. In the initial state, the coil of the first contactor KM1 is de-energized, the coil of the fifth contactor KM5 is energized, the normally closed contact of the first manual switch SB1 is closed, the normally open contact is disconnected, and the first circuit breaker QF1 is closed. At this time, in order to realize online replacement of the first power transmitter, the first manual switch SB1 is pressed. At this time, the normally open contacts of the first manual switch SB1 are closed, the normally closed contacts are disconnected, the current acquisition circuit of the first power transmitter is short-circuited and disconnected, and the first circuit breaker is disconnected at the same time. At this time, the voltage acquisition circuit of the first power transmitter is disconnected, and the maintenance personnel can perform 9 online maintenance on the first power transmitter without affecting the operation.

[0085] In one possible implementation, the contact surfaces of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4, the fifth contactor KM5, the sixth contactor KM6, the seventh contactor KM7, and the eighth contactor KM8 are gold-plated. Gold plating of the contacts increases the service life of each contactor.

[0086] In one possible implementation, the first manual switch SB1, the second manual switch SB2, the third manual switch SB3, and the fourth manual switch SB4 are each pushbutton switches with two open and two closed contacts. Pushbutton switches are more convenient to operate than other switches. This embodiment can also employ a multi-contact rotary switch, which will not be described in detail here.

[0087] In one possible implementation, Figure 5 As shown, the circuit also includes a second power supply, a ninth relay KA9 and a fault alarm indicator light GZ;

[0088] The ninth output terminal of the control module is connected to one end of the coil of the ninth relay KA9, and the other end of the coil of the ninth relay KA9 is connected to the second end N1 of the first power supply;

[0089] The first end L2 of the second power supply is connected to one end of the normally open contact of the ninth relay KA9, the other end of the normally open contact of the ninth relay KA9 is connected to one end of the fault alarm indicator light GZ, and the other end of the fault alarm indicator light GZ is connected to the second end N2 of the second power supply.

[0090] In the first embodiment, when the power transmitter fails, the control module drives the coil of the ninth relay KA9 through the ninth output terminal to be energized, and the normally open contact of the ninth relay KA9 is closed, so that the fault alarm indicator light GZ is lit.

[0091] In a possible implementation, the first power transmitter, the second power transmitter, the third power transmitter, and the standby power transmitter are digital active power transmitters.

[0092] In one possible implementation, the communication terminals of the control module, the first power transmitter, the second power transmitter, the third power transmitter, and the backup power transmitter are all 485-port communication terminals. The 485 communication terminal has a communication range of over 500 meters and strong anti-interference capabilities. Therefore, the communication terminals in this novel device use the 485 interface.

[0093] In one possible implementation, the circuit further includes a first fuse FU1, a second fuse FU2, and a third fuse FU3;

[0094] One end of the first fuse FU1 is connected to the first monitored terminal of the generator set, and the other end is respectively connected to the first three-phase voltage monitoring terminal of the first power transmitter, the first three-phase voltage monitoring terminal of the second power transmitter, the first three-phase voltage monitoring terminal of the third power transmitter, and the first three-phase voltage monitoring terminal of the standby power transmitter;

[0095] One end of the second fuse FU2 is connected to the second monitored terminal of the generator set, and the other end is respectively connected to the second three-phase voltage monitoring terminal of the first power transmitter, the second three-phase voltage monitoring terminal of the second power transmitter, the second three-phase voltage monitoring terminal of the third power transmitter, and the second three-phase voltage monitoring terminal of the standby power transmitter;

[0096] One end of the third fuse FU3 is connected to the third end to be detected of the generator set, and the other end is respectively connected to the third three-phase voltage monitoring end of the first power transmitter, the third three-phase voltage monitoring end of the second power transmitter, the third three-phase voltage monitoring end of the third power transmitter and the third three-phase voltage monitoring end of the standby power transmitter.

[0097] Each fuse is used to provide short-circuit protection for the three-phase voltage acquisition port of each power transmitter.

[0098] In one possible implementation, the first fuse FU1, the second fuse FU2, and the third fuse FU3 are each self-resetting fuses. Unlike traditional fuses, self-resetting fuses automatically return to normal conduction after the short-circuit fault is eliminated, eliminating the need for fuse element replacement and saving maintenance costs and time.

[0099] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0100] It should also be noted that, in the description of the present invention, relational terms such as first and second, etc., are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0101] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to enumerate all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A generator set power transmitter optimization circuit, characterized in that: include: A generator set, a first power transmitter, a second power transmitter, a third power transmitter, a standby power transmitter, a fourth contactor, an eighth contactor, and a control module; The first current monitoring input terminal of the first power transmitter is connected to the first monitored terminal of the generator set; the second current monitoring input terminal of the first power transmitter is connected to the second monitored terminal of the generator set; the first current monitoring output terminal of the first power transmitter is connected to the first current monitoring input terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to the second current monitoring input terminal of the second power transmitter; the first current monitoring output terminal of the second power transmitter is connected to the first current monitoring input terminal of the third power transmitter; and the second current monitoring output terminal of the second power transmitter is connected to the second current monitoring input terminal of the third power transmitter; The first current monitoring output end of the third power transmitter is connected to one end of the first normally closed contact of the fourth contactor and one end of the first normally open contact of the fourth contactor; the second current monitoring output end of the third power transmitter is connected to one end of the second normally closed contact of the fourth contactor and one end of the second normally open contact of the fourth contactor; the other end of the first normally closed contact of the fourth contactor is connected to the first current monitoring input end of the standby power transmitter; the other end of the second normally closed contact of the fourth contactor is connected to the second current monitoring input end of the standby power transmitter; the other end of the first normally open contact of the fourth contactor is connected to the first current monitoring output end of the standby power transmitter; the other end of the second normally open contact of the fourth contactor is connected to the second current monitoring output end of the standby power transmitter; The three-phase voltage monitoring end of the first power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be monitored of the generator set; the three-phase voltage monitoring end of the second power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be monitored of the generator set; the three-phase voltage monitoring end of the third power transmitter is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be monitored of the generator set; the three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the eighth contactor; the other end of the three-phase normally open contact of the eighth contactor is respectively connected to the first end to be monitored, the second end to be monitored and the third end to be monitored of the generator set; The communication end of the control module is connected to the communication end of the first power transmitter, the communication end of the second power transmitter, the communication end of the third power transmitter and the communication end of the standby power transmitter; The common power supply terminal of the control module is connected to the first end of the first power supply, the fourth output terminal of the control module is connected to one end of the coil of the fourth contactor, the eighth output terminal is connected to one end of the coil of the eighth contactor, and the other end of the coil of the fourth contactor and the other end of the coil of the eighth contactor are respectively connected to the second end of the first power supply.

2. The generator set power transmitter optimization circuit according to claim 1, characterized in that: The circuit further includes a first contactor, a second contactor, a third contactor, a fifth contactor, a sixth contactor, and a seventh contactor; The first end to be monitored of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first contactor; The other end of the first normally closed contact of the first contactor is connected to the first current monitoring input end of the first power transmitter; The other end of the first normally open contact of the first contactor is connected to the first current monitoring output end of the first power transmitter; The second monitored end of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first contactor; the other end of the second normally closed contact of the first contactor is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first contactor is connected to the second current monitoring output end of the first power transmitter; The first current monitoring output terminal of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second contactor; The other end of the first normally closed contact of the second contactor is connected to the first current monitoring input end of the second power transmitter; the other end of the first normally open contact of the second contactor is connected to the first current monitoring output end of the second power transmitter; the second current monitoring output end of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second contactor; the other end of the second normally closed contact of the second contactor is connected to the second current monitoring input end of the second power transmitter; the other end of the second normally open contact of the second contactor is connected to the second current monitoring output end of the second power transmitter; The first current monitoring output terminal of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third contactor; the other end of the first normally closed contact of the third contactor is connected to the first current monitoring input terminal of the third power transmitter; the other end of the first normally open contact of the third contactor is connected to the first current monitoring output terminal of the third power transmitter; the second current monitoring output terminal of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third contactor; the other end of the second normally closed contact of the third contactor is connected to the second current monitoring input terminal of the third power transmitter; the other end of the second normally open contact of the third contactor is connected to the second current monitoring output terminal of the third power transmitter; The three-phase voltage monitoring end of the first power transmitter is connected to one end of the three-phase normally open contact of the fifth contactor; the other end of the three-phase normally open contact of the fifth contactor is respectively connected to the first to-be-monitored end, the second to-be-monitored end and the third to-be-monitored end of the generator set; The three-phase voltage monitoring end of the second power transmitter is connected to one end of the three-phase normally open contact of the sixth contactor; the other end of the three-phase normally open contact of the sixth contactor is respectively connected to the first to-be-monitored end, the second to-be-monitored end and the third to-be-monitored end of the generator set; The three-phase voltage monitoring end of the third power transmitter is connected to one end of the three-phase normally open contact of the seventh contactor; the other end of the three-phase normally open contact of the seventh contactor is respectively connected to the first to-be-monitored end, the second to-be-monitored end and the third to-be-monitored end of the generator set; The first output end of the control module is connected to one end of the coil of the first contactor, the second output end is connected to one end of the coil of the second contactor, the third output end is connected to one end of the coil of the third contactor, the fifth output end is connected to one end of the coil of the fifth contactor, the sixth output end is connected to one end of the coil of the sixth contactor, and the seventh output end is connected to one end of the coil of the seventh contactor; the second end of the first power supply is connected to the other end of the coil of the first contactor, the other end of the coil of the second contactor, the other end of the coil of the third contactor, the other end of the coil of the fifth contactor, the other end of the coil of the sixth contactor, and the other end of the coil of the seventh contactor.

3. The generator set power transmitter optimization circuit according to claim 2, characterized in that: Contact surfaces of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the sixth contactor, the seventh contactor and the eighth contactor are gold-plated.

4. The generator set power transmitter optimization circuit according to claim 1, characterized in that: The circuit further includes a first manual switch, a second manual switch, a third manual switch, a fourth manual switch, a first circuit breaker, a second circuit breaker, a third circuit breaker, and a fourth circuit breaker; The first monitored end of the generator set is connected to one end of the first normally open contact and one end of the first normally closed contact of the first manual switch; the other end of the first normally closed contact of the first manual switch is connected to the first current monitoring input end of the first power transmitter; the other end of the first normally open contact of the first manual switch is connected to the first current monitoring output end of the first power transmitter; the second monitored end of the generator set is connected to one end of the second normally open contact and one end of the second normally closed contact of the first manual switch; the other end of the second normally closed contact of the first manual switch is connected to the second current monitoring input end of the first power transmitter; the other end of the second normally open contact of the first manual switch is connected to the second current monitoring output end of the first power transmitter; The first current monitoring output terminal of the first power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the second manual switch; the other end of the first normally closed contact of the second manual switch is connected to the first current monitoring input terminal of the second power transmitter; the other end of the first normally open contact of the second manual switch is connected to the first current monitoring output terminal of the second power transmitter; the second current monitoring output terminal of the first power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the second manual switch; the other end of the second normally closed contact of the second manual switch is connected to the second current monitoring input terminal of the second power transmitter; the other end of the second normally open contact of the second manual switch is connected to the second current monitoring output terminal of the second power transmitter; The first current monitoring output terminal of the second power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the third manual switch; the other end of the first normally closed contact of the third manual switch is connected to the first current monitoring input terminal of the third power transmitter; the other end of the first normally open contact of the third manual switch is connected to the first current monitoring output terminal of the third power transmitter; the second current monitoring output terminal of the second power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the third manual switch; the other end of the second normally closed contact of the third manual switch is connected to the second current monitoring input terminal of the third power transmitter; the other end of the second normally open contact of the third manual switch is connected to the second current monitoring output terminal of the third power transmitter; The first current monitoring output end of the third power transmitter is connected to one end of the first normally open contact and one end of the first normally closed contact of the fourth manual switch; the other end of the first normally closed contact of the fourth manual switch is connected to the first current monitoring input end of the standby power transmitter; the other end of the first normally open contact of the fourth manual switch is connected to the first current monitoring output end of the standby power transmitter; the second current monitoring output end of the third power transmitter is connected to one end of the second normally open contact and one end of the second normally closed contact of the fourth manual switch; the other end of the second normally closed contact of the fourth manual switch is connected to the second current monitoring input end of the standby power transmitter; the other end of the second normally open contact of the fourth manual switch is connected to the second current monitoring output end of the standby power transmitter; The three-phase voltage monitoring terminal of the first power transmitter is connected to one end of the three-phase normally open contact of the first circuit breaker; the other end of the three-phase normally open contact of the first circuit breaker is respectively connected to the first to-be-monitored terminal, the second to-be-monitored terminal and the third to-be-monitored terminal of the generator set; The three-phase voltage monitoring terminal of the second power transmitter is connected to one end of the three-phase normally open contact of the second circuit breaker; the other end of the three-phase normally open contact of the second circuit breaker is respectively connected to the first to-be-monitored terminal, the second to-be-monitored terminal and the third to-be-monitored terminal of the generator set; The three-phase voltage monitoring terminal of the third power transmitter is connected to one end of the three-phase normally open contact of the third circuit breaker; the other end of the three-phase normally open contact of the third circuit breaker is respectively connected to the first to-be-monitored terminal, the second to-be-monitored terminal and the third to-be-monitored terminal of the generator set; The three-phase voltage monitoring end of the standby power transmitter is connected to one end of the three-phase normally open contact of the fourth circuit breaker; the other end of the three-phase normally open contact of the fourth circuit breaker is respectively connected to the first to-be-monitored end, the second to-be-monitored end and the third to-be-monitored end of the generator set.

5. The generator set power transmitter optimization circuit according to claim 4, characterized in that: The first manual switch, the second manual switch, the third manual switch and the fourth manual switch are respectively push button switches with two open and two closed contacts.

6. The generator set power transmitter optimization circuit according to claim 1, characterized in that: The circuit also includes a second power supply, a ninth relay, and a fault alarm indicator light; The ninth output terminal of the control module is connected to one end of the coil of the ninth relay, and the other end of the coil of the ninth relay is connected to the second end of the first power supply; The first end of the second power supply is connected to one end of the normally open contact of the ninth relay, the other end of the normally open contact of the ninth relay is connected to one end of the fault alarm indicator light, and the other end of the fault alarm indicator light is connected to the second end of the second power supply.

7. The generator set power transmitter optimization circuit according to claim 1, characterized in that: The first power transmitter, the second power transmitter, the third power transmitter and the standby power transmitter are digital active power transmitters respectively.

8. The generator set power transmitter optimization circuit according to claim 1, characterized in that: The communication end of the control module, the communication end of the first power transmitter, the communication end of the second power transmitter, the communication end of the third power transmitter and the communication end of the standby power transmitter are respectively communication ends of the 485 interface.

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