CN217789314U

CN217789314U - Multi-mode generator set

Info

Publication number: CN217789314U
Application number: CN202221669695.9U
Authority: CN
Inventors: 陈传勇; 喻小涛; 华攸
Original assignee: Tellhow Power Technology Co ltd
Current assignee: Tellhow Power Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-11
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to the technical field of diesel generating sets, in particular to a multi-mode generator set, which comprises a first set, a second set and a third set; the first unit, the second unit and the third unit comprise first circuit breakers; the outlet ends of the three groups of first circuit breakers are connected with each other; and the outlet ends of the three groups of first circuit breakers are connected with loads. The utility model provides a multi-mode generator unit chooses three groups of units for use and makes three groups of units parallel operation, opens and shuts through the circuit breaker to three groups of units, can realize multiple operating condition such as island unit/parallel operation, commercial power self-switching self-starting operation and commercial power self-starting + parallel operation power management.

Description

Multi-mode generator set

Technical Field

The utility model relates to a diesel generating set technical field especially relates to a multi-mode generator set.

Background

The generator set is used as an emergency standby power supply and widely applied to the fields of power systems, power plants, industrial and mining enterprises, public facilities, data centers and the like. The structure of the generator set can refer to the Chinese utility model patent with the application number of 201220485541.4 and the name of silence diesel generator. The generator set needs to meet application requirements of various application scenarios, such as island single machine/parallel operation, AMF + ATS functional application, AMF + synchronization function, and the like. Because a single generator set is limited by factors such as low power, poor reliability guarantee capability and the like, the requirement of a high-power emergency power utilization place cannot be met, and under the condition, a mode of parallel operation of a plurality of generator sets is required. At present, the main modes of parallel operation of the diesel generating set are multi-machine parallel connection and single-machine grid connection. The multi-machine parallel mode automatically distributes load according to the running state of the whole system, and the output electric energy of each generator set cannot be flexibly allocated. The single machine grid-connected mode is a mode that a generator set outputs a fixed power value, and the output power is adjusted by a city network or other systems according to the load, so that the output power is fixed and cannot be flexibly adjusted. Because the existing system can only realize one operation mode, the system has the problems of single power supply mode and poor practicability.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a multi-mode generator set with strong practicability is provided, and multiple operation modes can be realized.

In order to solve the technical problem, the utility model discloses a technical scheme be: a multi-mode generator set comprises a first set, a second set and a third set;

the first unit, the second unit and the third unit comprise first circuit breakers;

the outlet ends of the three groups of first circuit breakers are connected with each other;

and the outlet ends of the three groups of first circuit breakers are connected with loads.

Furthermore, the three-phase breaker further comprises a main cable, and the outlet ends of the three groups of first breakers are connected with each other through the main cable.

Furthermore, the parallel operation CAN communication line is further included, and the second unit and the third unit are connected through the parallel operation CAN communication line.

Further, first unit still includes the generator, the generator of first unit pass through the leader cable with the first circuit breaker of first unit is connected, the first circuit breaker of first unit pass through the copper bar with the first circuit breaker of second unit is connected.

Furthermore, the parallel operation CAN communication line is further included, the second unit comprises a second circuit breaker, the leading-out terminal of the first circuit breaker of the first unit and the leading-out terminal of the second circuit breaker of the second unit are connected through a main cable, the leading-out terminal of the first circuit breaker of the first unit and the leading-out terminal of the second circuit breaker of the second unit are both connected with a load, and the first unit and the second unit are connected through the parallel operation CAN communication line.

The beneficial effects of the utility model reside in that: the utility model provides a multi-mode generator unit chooses three groups of units and makes three groups of units parallel operation, opens and shuts through the circuit breaker to three groups of units, can realize multiple operating condition such as island unit/parallel operation, commercial power self-switching self-starting operation and commercial power self-starting + parallel operation power management.

Drawings

Fig. 1 is a schematic structural diagram of a multi-mode generator set according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of the multi-mode generator set according to the embodiment of the present invention;

description of reference numerals:

1. a first unit; 11. a first circuit breaker; 2. a second unit; 21. a second circuit breaker; 3. and a third unit.

Detailed Description

In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The utility model provides a multi-mode generator unit is used on the diesel generator unit.

Referring to fig. 1 to 2, the multi-mode generator set of the present invention includes a first set 1, a second set 2 and a third set 3;

the first unit 1, the second unit 2 and the third unit 3 comprise a first circuit breaker 11;

the outlet ends of the three groups of first circuit breakers 11 are connected with each other;

and the outlet ends of the three groups of first circuit breakers 11 are all connected with loads.

From the above description, the beneficial effects of the present invention are: the utility model provides a multi-mode generator unit chooses three groups of units and makes three groups of units parallel operation, opens and shuts through the circuit breaker to three groups of units, can realize multiple operating condition such as island unit/parallel operation, commercial power self-switching self-starting operation and commercial power self-starting + parallel operation power management.

In an alternative embodiment, a main cable is further included, and the outlet terminals of the three sets of first circuit breakers 11 are connected with each other through the main cable.

In an optional embodiment, the system further comprises a parallel machine CAN communication line, and the second unit 2 and the third unit 3 are connected through the parallel machine CAN communication line.

In an optional embodiment, the first unit 1 further includes a generator, the generator of the first unit 1 is connected to the first circuit breaker 11 of the first unit 1 through a main cable, and the first circuit breaker 11 of the first unit 1 is connected to the first circuit breaker 11 of the second unit 2 through a copper bar.

In an optional embodiment, the parallel operation CAN communication line is further included, the second unit 2 includes a second circuit breaker 21, the outlet terminal of the first circuit breaker 11 of the first unit 1 is connected with the outlet terminal of the second circuit breaker 21 of the second unit 2 through a main cable, the outlet terminal of the first circuit breaker 11 of the first unit 1 and the outlet terminal of the second circuit breaker 21 of the second unit 2 are both connected with a load, and the first unit 1 and the second unit 2 are connected through the parallel operation CAN communication line.

The utility model discloses a multi-mode generator set is at the during operation, the unit switches to when fixed power mode, choose 3 units for use, first unit, the second unit, the leading-out terminal of the first circuit breaker of third unit passes through the main cable and connects, and connect to the load, second unit and third unit pass through parallel operation CAN communication line and connect, operate first unit with fixed power mode, fixed power is for example set up to 50KW, all the other second units and third unit are in normal mode operation, semi-automatic mode is all arranged in to 3 units, the manual first circuit breaker who starts second unit and third unit in proper order, third unit adjusts generating voltage and frequency and female arranging reaches automatic first circuit breaker in back of synchronizing, second unit and third unit parallel operation this moment, give the system and add 500KW load, at this moment second unit and third unit carry out the load equipartition, start first unit and make its parallel operation, first unit this moment, the second unit, the third unit takes 50kW respectively, the KW 225KW, 225KW load operation.

When the unit is switched to an AMF + ATS functional mode, a generator of a first unit is connected with a first breaker of the first unit through a main cable, a wire outlet end of the first breaker of the first unit is connected with a wire inlet end of a second breaker of a second unit through a copper bar, the first breaker of the first unit and the second breaker of the second unit can only be switched on through electrical interlocking, a mains supply is connected into the first breaker of a third unit, a mains supply switch breaker is switched on after the fault is confirmed, the unit is switched to an automatic mode, when the three-phase voltage of the mains supply is normal, relays K1, K2 and K3 attract each other, a time relay KT is controlled to be electrified, and the second breaker is automatically switched on after short delay; the commercial power is disconnected, the relay K1 loses power, the normally open electric shock is disconnected, and the second circuit breaker is tripped in an undervoltage mode; meanwhile, the relay loses power, the normally closed electric shock is closed, the first unit is automatically started after receiving the starting signal, and the first breaker is automatically switched on after the power generation is normal. If the commercial power is recovered to be normal, the first breaker automatic switching-off unit is shut down after time delay confirmation, and the second breaker is automatically switched on after short time delay.

When the unit switches to AMF + synchronous function mode, choose 2 units (first unit, second unit) for use, the leading-out terminal of the first circuit breaker of first unit, second unit passes through the main cable and connects to the load, and first unit and second unit pass through parallel operation CAN communication line and connect, and the priority is established to 1 and 2, sets for and stops the power value: if the reserved power is not enough, the power value of 1 machine set is started to be 200KW, and the power of 1 machine set is stopped to be 300KW. The commercial power is connected into a commercial power switch breaker of the first unit, the commercial power switch is switched on after no error is confirmed, then 2 units are switched to an automatic mode, and the second breaker is automatically switched on after short time delay. The commercial power is cut off, the first unit is automatically started, when the power generation parameters are normal, the first breaker is automatically switched on to slowly load the unit, and when the power exceeds 300KW, the second unit is automatically started and switched on; the 2 machine sets are operated in parallel and equally divide the load. And the load is slowly reduced, when the load is less than 200KW, the second unit of the unit is automatically opened and stopped, and the first unit is loaded. The commercial power is recovered, the remote control start-stop signal K1 of the first unit is disconnected, the first circuit breaker automatically opens the brake, the first unit is shut down, and after short time delay, the second circuit breaker automatically closes the brake.

The utility model discloses an between the above-mentioned many diesel generating set, can realize the operation demand of multiple operating modes such as island unit/parallel operation, AMF + ATS function, AMF + synchro function through the special control module of unit, satisfy the user demand of customer under different operating modes such as lease.

Referring to fig. 1 to fig. 2, a first embodiment of the present invention is: a multi-mode generator set comprises a first set, a second set and a third set;

The three-phase circuit breaker is characterized by further comprising main cables, and the outlet ends of the three groups of first circuit breakers are connected with one another through the main cables. The parallel operation CAN communication line is further included, and the second unit and the third unit are connected through the parallel operation CAN communication line. The first unit further comprises a generator, the generator of the first unit is connected with the first circuit breaker of the first unit through a main cable, and the first circuit breaker of the first unit is connected with the first circuit breaker of the second unit through a copper bar. Still include parallel operation CAN communication line, the second unit includes the second circuit breaker, the leading-out terminal of the first circuit breaker of first unit with the leading-out terminal of the second circuit breaker of second unit passes through the main cable and connects, the leading-out terminal of the first circuit breaker of first unit with the leading-out terminal of the second circuit breaker of second unit all connects the load, first unit and second unit pass through parallel operation CAN communication line and connect.

To sum up, the utility model provides a multi-mode generator unit chooses three groups of units for use and makes three groups of units parallel operation, opens and shuts through the circuit breaker to three groups of units, can realize multiple operating condition such as island unit/parallel operation, commercial power self-switching self-starting operation and commercial power self-starting + parallel operation power management.

The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A multi-mode generator set is characterized by comprising a first set, a second set and a third set; the first unit, the second unit and the third unit comprise first circuit breakers; the outlet ends of the three groups of first circuit breakers are connected with each other; and the outlet ends of the three groups of first circuit breakers are connected with loads.

2. The multimode generator set of claim 1, further comprising a main cable, wherein the outlet ends of the three sets of first circuit breakers are interconnected by the main cable.

3. The multimode generator set according to claim 2, further comprising a parallel machine CAN communication line, wherein the second set and the third set are connected through the parallel machine CAN communication line.

4. The multi-mode generator set of claim 2, wherein the first set further comprises a generator, the generator of the first set is connected to the first circuit breaker of the first set through a main cable, and the first circuit breaker of the first set is connected to the first circuit breaker of the second set through a copper bar.

5. The multimode generator set according to claim 2, further comprising a parallel machine CAN communication line, wherein the second set comprises a second circuit breaker, the outlet of the first circuit breaker of the first set is connected with the outlet of the second circuit breaker of the second set through a main cable, the outlets of the first circuit breaker of the first set and the second circuit breaker of the second set are both connected with a load, and the first set and the second set are connected through the parallel machine CAN communication line.