Generator set parallel operation control system
The feeder circuit breaker of the parallel bus cabinet is directly controlled by the generator control module, which solves the problem of using a high-cost bus controller in the prior art, and realizes a low-cost and efficient solution for parallel machine control of the generator set.
Patent Information
- Application Number
- CN202421515656.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-29
AI Technical Summary
The existing generator set parallel control system requires the use of a high-cost busbar controller to control the feeder circuit breaker of the parallel busbar, resulting in complex system structure and high implementation cost.
The generator control module is used to connect to the feeder circuit breaker of the parallel bus cabinet through its multiple input and output ports, so as to realize the closing and opening control of the feeder circuit breaker of the parallel bus cabinet, avoiding the use of a bus connection controller.
The power unit is divided and closed control is realized, saving investment in the busbar controller, the system structure is simple, the implementation cost is low, and the system is improved.
Smart Images
Figure CN222802556U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of generators, in particular to a generator set parallel control system. Background Art
[0002] With the continuous growth of electricity demand, a single generator set is often unable to meet the demand for continuous, stable, and large-capacity power supply. Through parallel operation, the output power of multiple generator sets can be superimposed, thereby increasing the power supply capacity and meeting higher power demand. Through parallel operation, multiple generator sets can also back up each other, ensuring that when one generator set fails, other generator sets can continue to supply power, thereby improving the reliability of power supply. The parallel operation of generator sets requires parallel operation through a parallel combiner. However, when a conventional parallel combiner is used, a busbar controller is required to specifically control the parallel combiner feeder circuit breaker to perform corresponding closing and opening state actions according to the energized state of the busbar of the parallel combiner, and the cost of the busbar controller is relatively high. Utility Model Content
[0003] The utility model aims to provide a generator set parallel control system, which has a simple structure and low implementation cost and can realize the opening and closing control of the generator set parallel without a bus tie controller.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a generator set parallel control system, including a parallel combiner cabinet, a plurality of generator sets and a generator control module, the unit start and stop control line of the generator set is connected to the corresponding generator control module, the output line of the generator set is connected to the parallel combiner cabinet to supply power to the load through the parallel combiner cabinet, the generator control module has multiple input and output ports, the output port of the generator control module is connected to the feeder circuit breaker closing and opening function control port on the parallel combiner cabinet through a control line, and the input port of the generator control module is connected to the feeder circuit breaker closing and opening state feedback port on the parallel combiner cabinet through a sampling line.
[0005] Furthermore, it also includes several outgoing line cabinets, the output line of the generator set is connected to the corresponding outgoing line cabinet, an output port of the generator control module is connected to the outgoing line cabinet through a control line, the output line of the outgoing line cabinet is connected to the incoming line end of the parallel machine cabinet, and the other output port of the generator control module is connected to the feeder end of the parallel machine cabinet through a control line.
[0006] Furthermore, the generator control module controls the closing and opening actions of the feeder circuit breaker on the parallel combiner cabinet through its output port, so that the feeder circuit breaker on the parallel combiner cabinet is closed when the generator set is running to supply power to the load, and is opened when the generator set is stopped to cut off the load.
[0007] Furthermore, the generator control module adopts the deep sea controller DSE8610.
[0008] Furthermore, the feeder circuit breaker on the parallel combiner cabinet is a molded case circuit breaker or an air circuit breaker with an electric operating mechanism.
[0009] Furthermore, the generator set is a diesel generator set.
[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a generator set parallel control system, which does not use a bus tie controller, and controls the closing and opening actions of the paralleling cabinet feeder circuit breaker according to the state of the paralleling cabinet circuit breaker corresponding to the busbar energization condition through the generator control module, thereby saving the investment in the bus tie controller. Therefore, the system structure is simple and the implementation cost is low. Therefore, the present invention has strong practicality and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a system implementation principle block diagram of an embodiment of the utility model;
[0012] Figure 2 It is a system electrical schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0014] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0015] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0016] like Figure 1-2As shown, this embodiment provides a generator set parallel control system, including a parallel combiner cabinet, several generator sets and a generator control module, the generator set start and stop control line is connected to the corresponding generator control module, the output line of the generator set is connected to the parallel combiner cabinet, so as to supply power to the load through the parallel combiner cabinet, the generator control module has multiple input and output ports, the output port of the generator control module is connected to the feeder circuit breaker closing and opening function control port on the parallel combiner cabinet through a control line, and the input port of the generator control module is connected to the feeder circuit breaker closing and opening state feedback port on the parallel combiner cabinet through a sampling line. The generator control module sends out the control signal required by the combiner cabinet according to the operating state of the generator set and the current working state of the parallel combiner cabinet, that is, the closing and opening state of the feeder end circuit breaker on the parallel combiner cabinet obtained by the input port corresponds to the energized state of the busbar, controls the corresponding action of the parallel combiner cabinet, and automatically completes the load power supply or cuts off the load.
[0017] In this embodiment, the generator set parallel control system also includes a plurality of outgoing line cabinets, the output lines of the generator sets are connected to the corresponding outgoing line cabinets, an output port of the generator control module is connected to the outgoing line cabinet through a control line, the output line of the outgoing line cabinet is connected to the incoming line end of the paralleling cabinet, and another output port of the generator control module is connected to the feeder end of the paralleling cabinet through a control line.
[0018] The generator control module controls the closing and opening actions of the feeder circuit breaker on the parallel combiner cabinet through its output port, so that the feeder circuit breaker on the parallel combiner cabinet is closed when the generator set is running to supply power to the load, and is opened when all the generator sets are stopped to cut off the load.
[0019] In this embodiment, the generator control module adopts the deep sea controller DSE8610. The two output ports and one input port of the deep sea controller DSE8610 correspond to the closing and opening function control and closing and opening state feedback of the circuit breaker of the parallel machine combiner cabinet respectively; the PLC in the deep sea controller DSE8610 controls the two output ports according to the feedback of the input port to control the closing and opening of the feeder circuit breaker in the parallel machine combiner cabinet according to the current operation requirements. Different generator control modules are connected through communication lines.
[0020] In this embodiment, the feeder circuit breaker on the parallel combiner cabinet is a molded case circuit breaker or an air circuit breaker with an electric operating mechanism.
[0021] In this embodiment, the generator set is a diesel generator set.
[0022] In this system, the control circuit of the parallel combiner cabinet is composed of the parallel combiner cabinet feeder section circuit breaker and a generator control module with multiple input and output ports; the generator control module is connected to the parallel combiner cabinet through the use port; each use port of the generator control module corresponds to the control of the circuit breaker at the feeder end of the parallel combiner cabinet, so that the generator control module controls the module output port through the set PLC to control the closing and opening of the circuit breaker at the feeder end of the parallel combiner cabinet, and completes closing when multiple generator sets are running and opening when all are stopped.
[0023] In this embodiment, the feeder end circuit breaker of the paralleling cabinet is an air circuit breaker. When the generator set is started, the circuit breaker at the unit end is closed. At this time, the busbar is energized. The deep-sea controller DSE8610 determines that the feeder circuit breaker of the paralleling cabinet is in the open state through the closing and opening feedback signal, and outputs the closing signal of the feeder circuit breaker of the paralleling cabinet, so that the feeder circuit breaker of the paralleling cabinet is closed to supply power to the load. When all the parallel generator sets stop running, the deep-sea controller DSE8610 determines that the feeder circuit breaker of the paralleling cabinet is in the closed state through the closing and opening feedback signal, and outputs the opening signal of the feeder circuit breaker of the paralleling cabinet to cut off the load.
[0024] This system can achieve the function of isolating the load without using a bus tie controller, so that the parallel combiner cabinet can be closed when multiple generator sets are running in a short period of time, and opened when all generator sets are stopped, thus saving a bus tie controller, saving costs and achieving economical operation.
[0025] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.
Claims
1. A generator set parallel control system, characterized in that: It includes a parallel machine combiner cabinet, several generator sets and a generator control module. The start and stop control lines of the generator sets are connected to the corresponding generator control modules. The output lines of the generator sets are connected to the parallel machine combiner cabinet to supply power to the load through the parallel machine combiner cabinet. The generator control module has multiple input and output ports. The output port of the generator control module is connected to the feeder circuit breaker closing and opening function control port on the parallel machine combiner cabinet through a control line, and the input port of the generator control module is connected to the feeder circuit breaker closing and opening state feedback port on the parallel machine combiner cabinet through a sampling line.
2. The generator set parallel control system according to claim 1, characterized in that: It also includes several outgoing line cabinets, the output lines of the generator set are connected to the corresponding outgoing line cabinets, an output port of the generator control module is connected to the outgoing line cabinet through a control line, the output line of the outgoing line cabinet is connected to the incoming line end of the parallel machine cabinet, and the other output port of the generator control module is connected to the feeder end of the parallel machine cabinet through a control line.
3. The generator set parallel control system according to claim 1, characterized in that: The generator control module controls the closing and opening actions of the feeder circuit breaker on the parallel combiner cabinet through its output port, so that the feeder circuit breaker on the parallel combiner cabinet is closed when the generator set is running to supply power to the load, and is opened when the generator set is stopped to cut off the load.
4. The generator set parallel control system according to claim 1, characterized in that: The generator control module adopts the deep sea controller DSE8610.
5. The generator set parallel control system according to claim 1, characterized in that: The feeder circuit breaker on the parallel combiner cabinet is a molded case circuit breaker or an air circuit breaker with an electric operating mechanism.
6. The generator set parallel control system according to claim 1, characterized in that: The generator set is a diesel generator set.