A GOOSE communication redundancy networking type diesel engine and generator parallel integrated control system and method

Abstract

This invention relates to the field of power system automation and industrial control technology, specifically a GOOSE communication redundant networking integrated control system and method for diesel generator parallel operation. The system includes an integrated main controller, multiple generator sub-controllers, and a dual-redundant GOOSE communication network, conforming to the IEC 61850 standard and employing a publisher / subscriber model. The main controller adopts a hardware hot backup design, and the network uses a dual-star topology and supports PRP / HSR protocols to achieve full-link redundancy. The generator sub-controllers preprocess signals using discrete Fourier transform, and the main controller, based on the synchronous phasor measurement method and PID algorithm, accurately generates parallel operation and load allocation commands, with a GOOSE message transmission time of <4ms. This invention is delivered pre-assembled with standardized modules, enabling rapid on-site deployment. It can allocate load proportionally according to generator capacity and suppress circulating current in real time, shortening the parallel operation cycle by more than 30%, ensuring continuous and stable power supply, and adapting to flexible applications in multiple scenarios.

Description

Technical Field

[0001] This invention relates to the field of power system automation and industrial control technology, specifically to a GOOSE communication redundant networking integrated control system and method for diesel generator parallel operation. Background Technology

[0002] In critical scenarios such as industrial production, data centers, and emergency response, diesel generator parallel systems are core equipment for ensuring continuous power supply. Their reliability, control precision, and deployment efficiency directly affect power supply stability. However, traditional diesel generator parallel systems face numerous technical bottlenecks in practical applications, making it difficult to meet the high standards required by modern industry.

[0003] Traditional diesel generator parallel systems often use hard-wired connections or a single communication network for device interconnection, lacking effective redundancy design. Failure of the communication link or network equipment can easily lead to data transmission interruptions, causing parallel operation failures or even power outages, severely impacting continuous operation in critical scenarios. Furthermore, traditional communication networks lack standardized protocols and efficient transmission mechanisms, resulting in low message priority and high latency, making it difficult to meet the real-time requirements of parallel control. This leads to excessively long cycles from single-unit startup to parallel operation completion and insufficient emergency response capabilities.

[0004] In terms of control accuracy, traditional systems lack effective signal preprocessing mechanisms for acquiring generator operating parameters. Harmonic interference can severely affect the measurement accuracy of parameters such as voltage and current, leading to deviations in the judgment of parallel synchronization conditions. Furthermore, traditional load sharing algorithms often fail to achieve decoupled control of active and reactive power, resulting in uneven load distribution and a lack of effective monitoring and suppression of circulating currents between generators. This can easily cause some generators to be overloaded while others are underloaded, reducing system stability and equipment lifespan.

[0005] In terms of engineering deployment and maintenance, the main controller, sub-controllers, and network equipment of traditional diesel generator parallel systems are mostly non-standardized components, requiring complex assembly, logic debugging, and parameter tuning on-site. This not only prolongs the deployment cycle but also increases the difficulty of on-site construction and labor costs. At the same time, the hardware interfaces and communication protocols of traditional systems are not standardized, resulting in poor compatibility and difficulty in adapting to the flexible expansion needs of generators of different capacities, leading to high subsequent maintenance and upgrade costs.

[0006] In summary, existing diesel generator parallel systems have significant shortcomings in terms of communication reliability, control accuracy, load distribution rationality, deployment efficiency, and real-time performance. There is an urgent need for an integrated control system with redundancy protection, high-precision control, rapid deployment, and flexible adaptability to address the pain points of traditional technologies. Summary of the Invention

[0007] The purpose of this invention is to provide a GOOSE communication-redundant networked integrated control system and method for diesel generator parallel operation, in order to solve the problems of unreliable communication, low control accuracy, and complex deployment in traditional systems mentioned in the background.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A GOOSE communication-redundant networking integrated control system for diesel generator parallel operation includes: An integrated main controller, which serves as the core decision-making unit of the system, incorporates parallel control algorithms and load distribution algorithms. Multiple generator sub-controllers, each connected one-to-one with a diesel generator and integrated in the same cabinet, are used to acquire the operating parameters of the diesel generator with high precision and execute advanced control commands. A dual-redundant GOOSE communication network is used for data interaction between the integrated main controller and all generator sub-controllers. The network conforms to the IEC61850 standard and adopts a publisher / subscriber model. The system adopts a unified hardware interface and communication protocol. The integrated main controller receives the instantaneous values ​​of three-phase voltage and current of the generators uploaded by each generator sub-controller through the network, calculates key operating parameters, generates synchronous parallel operation commands based on the parallel operation control algorithm, and then sends the commands to the corresponding generator sub-controllers through the network to realize the rapid and accurate parallel operation of multiple diesel generators and intelligent load distribution.

[0009] Preferably, the dual-redundant GOOSE communication network is a dual-star Ethernet network topology, employing two independent sets of network switching devices and communication links; the integrated main controller and each generator sub-controller are equipped with dual network cards, which are respectively connected to the dual-star network to achieve network-level redundancy backup.

[0010] Preferably, the dual-redundancy GOOSE communication network uses optical fiber as the communication medium, and the network switch supports PRP or HSR redundancy protocols. Its network availability A satisfies the following model: ; in To ensure the availability of a single communication path, the transmission of GOOSE messages is not interrupted in the event of a single communication path or device failure.

[0011] Preferably, the integrated main controller itself adopts a hardware hot backup redundancy design, including a main control module and a standby module in hot standby state. The two modules synchronize data in real time through a heartbeat line. When the main control module fails, the standby module takes over control without disturbance.

[0012] Preferably, the generator sub-controller preprocesses the acquired voltage and current signals, and uses a discrete Fourier transform algorithm to calculate the fundamental component to eliminate the influence of harmonics on measurement accuracy. The calculation formula is as follows: ; in The sampled signal sequence, The number of sampling points within one period. For the spectrum, Corresponding to the fundamental frequency component.

[0013] Preferably, the system is delivered as an engineering product. The integrated main controller, generator sub-controller, and network switch are all standardized modules that are pre-assembled, logic debugged, and parameter tuned in the factory. After the system is transported to the site, only power connection, generator interface connection, and network cable connection are required, enabling rapid deployment.

[0014] On the other hand, the present invention also provides a control method based on the above-mentioned GOOSE communication redundancy networking integrated diesel generator parallel control system, which specifically includes the following steps: Step S1: The system is powered on and initialized. The integrated main controller establishes a communication connection with all generator sub-controllers through the redundant GOOSE communication network, performs online status detection, and constructs the system topology. Step S2: The integrated main controller receives an external start command or automatically issues a start command according to preset logic, and sends a start signal to the target generator sub-controller through the GOOSE network; Step S3: The generator sub-controller starts the corresponding diesel generator and uses the synchronous phasor measurement method to calculate the voltage, frequency, and phase angle parameters in real time, including the voltage phase angle θ. i The calculation formula is: ; in and The two-phase quadrature voltage components are obtained through the Clarke transform and uploaded to the integrated main controller in real time at millisecond intervals via the GOOSE network. Step S4: The integrated main controller receives the operating parameters of all online diesel generators and uses the following proportional-integral-derivative parallel control algorithm to calculate the frequency and voltage regulation:

[0015] Among them, F ref and V ref For the system reference frequency and voltage, F i and V i Let K be the measured frequency and voltage of the i-th generator. pf, K if , K df , K pv , K iv , K dv These are preset control parameters; Step S5: The integrated main controller will calculate the adjustment amount ΔF i and ΔV i It is encapsulated as a high-priority GOOSE instruction and simultaneously sent to all generator sub-controllers that have subscribed to the data through a redundant GOOSE communication network. Step S6: The generator sub-controller executes the received instructions, fine-tuning the diesel generator speed and excitation. The integrated main controller calculates the synchronization condition criteria in real time. |ΔF i |< f , |ΔV i |< v , |Δθ i |< θ ; in f , v , θ Δθ is the preset parallel operation allowable error threshold. i The phase difference between the generator to be paralleled and the system; Step S7: When all parallel operation quasi-synchronization conditions are met simultaneously, the integrated main controller issues a closing command to control the main circuit breaker to close, completing the parallel operation, and then enters the load distribution control stage.

[0016] In the load distribution control stage described in step S7, a load distribution algorithm based on droop characteristics and PID regulation to decouple reactive and active power is adopted: active power regulation reference value P ref_i The calculation formula is: ; Where P total_load For total load demand, S i Let i be the rated capacity of the i-th generator. The sum of the rated capacities of all online generators; active power regulation ΔP i With reactive power regulation ΔQ i The calculation formula is:

[0017] The integrated main controller is based on ΔP i and ΔQi The calculation results generate load distribution instructions, which are then sent out via the GOOSE communication network, enabling each diesel generator to accurately and stably assume the load according to its capacity ratio.

[0018] Preferably, during parallel operation, the integrated main controller continuously monitors the circulating current between each generator, and its circulating current value... The calculation formula is: ; in Let i be the output current vector of the i-th generator. The average output current vector of all online generators; when When the voltage exceeds a set threshold, the generator's voltage reference value V is automatically fine-tuned. ref_i This is to suppress circulating currents and optimize system stability.

[0019] Preferably, the GOOSE message enjoys the highest transmission priority on the network. Its transmission mechanism ensures that the message can be transmitted within a specific time T even under extreme network load, meeting the industrial-grade real-time requirement of T < 4ms. The entire cycle from single-machine operation to parallel operation is shortened by more than 30% compared to the traditional hard-wired solution.

[0020] Compared with the prior art, the beneficial effects of the present invention are: I. Reliable communication redundancy ensures continuous system operation. This invention employs a dual-redundant GOOSE communication network, constructed with a dual-star Ethernet topology, equipped with two independent network switching devices and communication links. Both the integrated main controller and the generator sub-controller are equipped with dual network interface cards (NICs) for network access. The network uses optical fiber as the communication medium and supports PRP or HSR redundancy protocols. This redundancy design significantly improves network availability, ensuring uninterrupted GOOSE message transmission even in the event of a single communication path or device failure. Simultaneously, the integrated main controller adopts a hardware hot-backup redundancy design. The main control module and the backup module synchronize data in real time via a heartbeat line. In the event of a failure, the backup module can take over control without disturbance. This forms a full-link redundancy protection from the network to the core control unit, completely avoiding the risk of single-point failures and ensuring the continuous and stable operation of the power supply system.

[0021] II. Precise and efficient control improves the quality of parallel operation and load distribution.

[0022] This invention achieves high-precision control through multiple optimization designs. The generator sub-controller uses a discrete Fourier transform algorithm to process voltage and current signals, effectively eliminating harmonic interference and ensuring the accuracy of operating parameter measurements. The integrated main controller acquires key parameters such as generator voltage, frequency, and phase angle in real time based on the synchronous phasor measurement method. It quickly calculates the adjustment amount through a proportional-integral-derivative parallel control algorithm, combined with a high-priority GOOSE command transmission mechanism, ensuring that the message transmission time is less than 4 milliseconds, meeting industrial-grade real-time requirements. During parallel operation, it strictly follows the quasi-synchronous condition criterion. In the load distribution phase, a dedicated algorithm decoupling reactive and active power is used to accurately distribute the load according to the generator's rated capacity ratio. At the same time, it continuously monitors the circulating current and automatically fine-tunes the voltage reference value to suppress circulating current interference, making the load distribution error smaller and significantly improving the system's operational stability. The cycle from single-unit to parallel operation is shortened by more than 30% compared to traditional solutions.

[0023] III. Standardized product design enables rapid deployment and engineering implementation.

[0024] This invention is delivered as an engineered product. The integrated main controller, generator sub-controller, and network switch are all standardized modules. All pre-assembly, logic debugging, and parameter tuning are completed in the factory, avoiding complex on-site debugging processes. On-site deployment only requires power connection, generator interface connection, and network cable plugging, eliminating the need for additional complex construction. This significantly simplifies installation steps, shortens deployment time, and reduces on-site construction difficulty and labor costs. The standardized design not only improves system compatibility and interchangeability but also facilitates later maintenance and upgrades. Whether for new projects or existing system upgrades, it allows for rapid adaptation, significantly improving project implementation efficiency.

[0025] IV. Wide range of applicable scenarios and flexible scalability

[0026] This invention supports the flexible parallel operation of multiple diesel generators of different capacities. The integrated main controller can automatically start via preset logic or receive external start commands, adapting to various power supply scenarios such as data centers, chemical industrial parks, and emergency rescue. The system complies with the IEC61850 standard, employing a unified hardware interface and communication protocol. The publisher / subscriber model facilitates network expansion, allowing for adjustments to the number of generators based on actual power load requirements without significant system architecture modifications. Furthermore, the system exhibits excellent environmental adaptability, maintaining stable performance in both fixed computer rooms and temporary field deployments. It provides customized, highly adaptable power supply solutions for diverse users, covering multiple fields including industrial production and emergency response. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are explained in detail together with the embodiments of the invention, but do not constitute a limitation thereof.

[0028] Figure 1 This is a block diagram of the control system of the present invention; Figure 2 This is a flowchart illustrating the control method of the present invention; Figure 3 The bar chart shows a comparative analysis of three sets of embodiments of the present invention. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Data Center Backup Power Diesel Generator Parallel System

[0031] Application Scenario: Designed for core power supply assurance in large data centers, requiring zero-interruption power supply and compatible with the parallel operation of four 1200kW diesel generators. System Configuration: The integrated main controller adopts a dual main control module hardware hot backup design, has built-in parallel control algorithm and reactive-active decoupling load distribution algorithm, and is equipped with dual network cards to access redundant networks. Four generator sub-controllers are integrated one-to-one with the diesel generators in a standard cabinet, with built-in discrete Fourier transform preprocessing modules to accurately acquire instantaneous voltage and current values; The dual-redundancy GOOSE communication network adopts a dual-star Ethernet topology and is configured with two industrial-grade fiber optic switches (supporting PRP redundancy protocol). The availability of a single communication path A_link is ≥99.99%, and the overall network availability A is ≥99.9999%.

[0032] Control process: After the system is powered on, it automatically completes topology construction and online device detection through the GOOSE network, with an initialization cycle of ≤30s; Upon receiving the start command from the data center UPS system, the main controller synchronously sends start signals to the four generator sub-controllers via the GOOSE network (transmission delay ≤3ms). The generator sub-controller uses the synchronous phasor measurement method to calculate the voltage phase angle θi and uploads the operating parameters at 10ms intervals. The main controller fine-tunes the speed and excitation through the PID algorithm. The closing command is issued after the quasi-synchronization conditions are met (|ΔFi|<0.1Hz, |ΔVi|<2%Un, |Δθi|<5°), and the entire parallel operation time is ≤60s; After paralleling, the load is distributed according to the generator's rated capacity ratio, and the circulating current value I_circulating_i is monitored in real time. When it exceeds 5% of the rated current, the voltage reference value is automatically fine-tuned to suppress circulating current interference.

[0033] Implementation results: When a single communication link or main controller module fails, the system switches without disturbance, with a switching time of <10ms; the parallel operation response speed is 35% faster than the traditional solution, and the load distribution error is ≤±1%.

[0034] Example 2: Emergency Power Supply System for Diesel Generators in Chemical Industrial Park

[0035] Application Scenario: Adapted to the continuous production needs of chemical industrial parks, responding to sudden power outages, supporting flexible parallel operation of 6 diesel generators of different capacities (800kW×4, 1500kW×2), requiring tolerance to high-temperature and dusty industrial environments. System Configuration: The integrated main controller incorporates a preset logic start module, supporting the linkage of "automatic inspection - fault self-diagnosis - emergency start", and the dual network card redundancy design ensures communication reliability; The generator sub-controller adopts an industrial-grade protective housing (IP54 rating) and has a built-in Clarke transform module and fundamental component calculation unit to eliminate the influence of harmonics on measurement accuracy. The redundant GOOSE communication network adopts the HSR redundancy protocol, uses single-mode optical fiber as the communication medium, and covers generator deployment points within a 1.5km range of the park. The network switches support hot-swapping.

[0036] Control process: The system is pre-assembled and logic debugged before leaving the factory. On-site, it only needs to be connected to a 380V power supply, generator terminals and fiber optic link. The deployment cycle is ≤8 hours. In the event of a sudden power outage, the main controller automatically starts six generators according to preset logic, and the sub-controllers upload voltage α-β components and frequency data in real time. The main controller calculates the active power adjustment reference value Pref_i of each generator based on the total load demand Ptotal_load and the ratio Si / ΣSj, and issues it through the high-priority GOOSE command; During parallel operation, the output current vector Ii and average current vector Iavg of each generator are continuously monitored, and the circulating current suppression response time is ≤50ms; When the load fluctuates, the active and reactive power can be independently adjusted by linking the droop characteristic with PID regulation, and the voltage stability accuracy is ≤±0.5%.

[0037] Implementation results: The system can withstand working environments of -20℃ to 60℃, with a single continuous operation time of ≥72 hours; the paralleling success rate is 100%, and the load distribution response delay is ≤20ms, meeting the continuous production power supply requirements of the chemical industrial park.

[0038] Example 3: Outdoor Emergency Rescue Mobile Diesel Generator Parallel System

[0039] Application Scenario: For emergency power supply in disaster areas such as earthquakes and floods, rapid deployment of three 500kW mobile diesel generators is required. The system should support temporary network parallel operation and be suitable for outdoor environments without a fixed server room. System Configuration: The integrated main controller adopts a portable design, with a built-in lithium battery backup power supply, dual network cards to support wireless + wired dual-mode redundant access, and is compatible with the IEC61850 standard. The generator sub-controller is integrated into the mobile generator set, featuring a quick-plug interface and supporting voltage and current signal preprocessing and millisecond-level data upload; The dual-redundancy GOOSE communication network adopts a "fiber optic wired + 5G wireless backup" topology. The wired link transmission latency is ≤4ms, and the wireless link serves as a redundant backup to ensure uninterrupted communication in complex outdoor environments.

[0040] Control process: During on-site deployment, power access, generator connection, and network connection are completed through standardized interfaces, with the entire deployment process taking ≤2 hours; The main controller receives the start command from the rescue command center and synchronously activates three mobile generators through the GOOSE network. The sub-controllers use the synchronous phasor measurement method to calculate operating parameters in real time. The main controller rapidly adjusts the frequency and voltage using a PID parallel algorithm, and the threshold for determining quasi-synchronous conditions is set to... f=0.2Hz v=3%Un、 θ=8°, shortening the parallel start-up time; After paralleling, the emergency load is evenly distributed according to the rated capacity. When the load changes due to the addition or removal of rescue equipment, Pref_i and reactive power regulation ΔQi are updated in real time to ensure stable power supply. During network link switching, GOOSE message transmission is uninterrupted, and the switching process has no impact on power quality.

[0041] Implementation results: The system adapts to harsh conditions such as bumpy roads, dust, and humidity changes in the field. A single deployment can meet the power supply needs of an emergency area for 2,000 people. The parallel operation cycle is shortened by 40% compared to traditional solutions, and it supports rapid withdrawal and reuse.

[0042]

[0043] The advantages of the GOOSE communication redundancy networking integrated control system and method for diesel generator parallel operation proposed in this invention are as follows: I. Reliable communication redundancy ensures continuous system operation. This invention employs a dual-redundant GOOSE communication network, constructed with a dual-star Ethernet topology, equipped with two independent network switching devices and communication links. Both the integrated main controller and the generator sub-controller are equipped with dual network interface cards (NICs) for network access. The network uses optical fiber as the communication medium and supports PRP or HSR redundancy protocols. This redundancy design significantly improves network availability, ensuring uninterrupted GOOSE message transmission even in the event of a single communication path or device failure. Simultaneously, the integrated main controller adopts a hardware hot-backup redundancy design. The main control module and the backup module synchronize data in real time via a heartbeat line. In the event of a failure, the backup module can take over control without disturbance. This forms a full-link redundancy protection from the network to the core control unit, completely avoiding the risk of single-point failures and ensuring the continuous and stable operation of the power supply system.

[0044] II. Precise and efficient control improves the quality of parallel operation and load distribution.

[0045] This invention achieves high-precision control through multiple optimization designs. The generator sub-controller uses a discrete Fourier transform algorithm to process voltage and current signals, effectively eliminating harmonic interference and ensuring the accuracy of operating parameter measurements. The integrated main controller acquires key parameters such as generator voltage, frequency, and phase angle in real time based on the synchronous phasor measurement method. It quickly calculates the adjustment amount through a proportional-integral-derivative parallel control algorithm, combined with a high-priority GOOSE command transmission mechanism, ensuring that the message transmission time is less than 4 milliseconds, meeting industrial-grade real-time requirements. During parallel operation, it strictly follows the quasi-synchronous condition criterion. In the load distribution phase, a dedicated algorithm decoupling reactive and active power is used to accurately distribute the load according to the generator's rated capacity ratio. At the same time, it continuously monitors the circulating current and automatically fine-tunes the voltage reference value to suppress circulating current interference, making the load distribution error smaller and significantly improving the system's operational stability. The cycle from single-unit to parallel operation is shortened by more than 30% compared to traditional solutions.

[0046] III. Standardized product design enables rapid deployment and engineering implementation.

[0047] This invention is delivered as an engineered product. The integrated main controller, generator sub-controller, and network switch are all standardized modules. All pre-assembly, logic debugging, and parameter tuning are completed in the factory, avoiding complex on-site debugging processes. On-site deployment only requires power connection, generator interface connection, and network cable plugging, eliminating the need for additional complex construction. This significantly simplifies installation steps, shortens deployment time, and reduces on-site construction difficulty and labor costs. The standardized design not only improves system compatibility and interchangeability but also facilitates later maintenance and upgrades. Whether for new projects or existing system upgrades, it allows for rapid adaptation, significantly improving project implementation efficiency.

[0048] IV. Wide range of applicable scenarios and flexible scalability

[0049] This invention supports the flexible parallel operation of multiple diesel generators of different capacities. The integrated main controller can automatically start via preset logic or receive external start commands, adapting to various power supply scenarios such as data centers, chemical industrial parks, and emergency rescue. The system complies with the IEC61850 standard, employing a unified hardware interface and communication protocol. The publisher / subscriber model facilitates network expansion, allowing for adjustments to the number of generators based on actual power load requirements without significant system architecture modifications. Furthermore, the system exhibits excellent environmental adaptability, maintaining stable performance in both fixed computer rooms and temporary field deployments. It provides customized, highly adaptable power supply solutions for diverse users, covering multiple fields including industrial production and emergency response.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A GOOSE communication redundant networking integrated control system for diesel generator parallel operation, characterized in that, include: The integrated main controller, as the core decision-making unit of the system, has built-in parallel control algorithm and load distribution algorithm; Multiple generator sub-controllers, each connected one-to-one with a diesel generator and integrated in the same cabinet, are used to acquire the operating parameters of the diesel generator with high precision and execute advanced control commands. A dual-redundant GOOSE communication network is used, through which the integrated main controller and all generator sub-controllers interact with each other. The network conforms to the IEC61850 standard and adopts a publisher / subscriber model. The system adopts a unified hardware interface and communication protocol. The integrated main controller receives the instantaneous values ​​of three-phase voltage and current of the generators uploaded by each generator sub-controller through the network, calculates key operating parameters, generates synchronous parallel operation commands based on the parallel operation control algorithm, and then sends the commands to the corresponding generator sub-controllers through the network to realize the rapid and accurate parallel operation of multiple diesel generators and intelligent load distribution.

2. The GOOSE communication redundant networking integrated control system for diesel generator parallel operation according to claim 1, characterized in that, The dual-redundancy GOOSE communication network is a dual-star Ethernet network topology, employing two independent sets of network switching devices and communication links; the integrated main controller and each generator sub-controller are equipped with dual network cards, which are respectively connected to the dual-star network to achieve network-level redundancy backup.

3. The GOOSE communication redundant networking integrated control system for diesel generator parallel operation according to claim 2, characterized in that, The dual-redundancy GOOSE communication network uses optical fiber as the communication medium, and the network switches support PRP or HSR redundancy protocols. Its network availability A satisfies the following model: ； in To ensure the availability of a single communication path, the transmission of GOOSE messages is not interrupted in the event of a single communication path or device failure.

4. The GOOSE communication redundant networking integrated control system for diesel generator parallel operation according to claim 1, characterized in that, The integrated main controller itself adopts a hardware hot backup redundancy design, including a main control module and a standby module in hot standby state. The two modules synchronize data in real time through a heartbeat line. When the main control module fails, the standby module takes over control without disturbance.

5. The GOOSE communication redundant networking integrated control system for diesel generator parallel operation according to claim 1, characterized in that, The generator sub-controller preprocesses the acquired voltage and current signals, and uses the Discrete Fourier Transform algorithm to calculate the fundamental component to eliminate the influence of harmonics on measurement accuracy. The calculation formula is as follows: ； in The sampled signal sequence, The number of sampling points within one period. For the spectrum, Corresponding to the fundamental frequency component.

6. The GOOSE communication redundant networking integrated control system for diesel generator parallel operation according to claim 1, characterized in that, The system is delivered as an engineering product. The integrated main controller, generator sub-controller, and network switch are all standardized modules. They are pre-assembled, logic debugged, and parameter tuned in the factory. After the system is transported to the site, only power connection, generator interface connection, and network cable connection are required, enabling rapid deployment.

7. A control method for a GOOSE communication redundant networking integrated diesel generator parallel control system based on any one of claims 1-6, characterized in that, Specifically, the steps include the following: Step S1: The system is powered on and initialized. The integrated main controller establishes a communication connection with all generator sub-controllers through the redundant GOOSE communication network, performs online status detection, and constructs the system topology. Step S2: The integrated main controller receives an external start command or automatically issues a start command according to preset logic, and sends a start signal to the target generator sub-controller through the GOOSE network; Step S3: The generator sub-controller starts the corresponding diesel generator and uses the synchronous phasor measurement method to calculate the voltage, frequency, and phase angle parameters in real time, including the voltage phase angle θ. i The calculation formula is: ； in and The two-phase quadrature voltage components are obtained through the Clarke transform and uploaded to the integrated main controller in real time at millisecond intervals via the GOOSE network. Step S4: The integrated main controller receives the operating parameters of all online diesel generators and uses the following proportional-integral-derivative parallel control algorithm to calculate the frequency and voltage regulation: Among them, F ref and V ref For the system reference frequency and voltage, F i and V i Let K be the measured frequency and voltage of the i-th generator. pf ,K if , K df , K pv , K iv , K dv These are preset control parameters; Step S5: The integrated main controller will calculate the adjustment amount ΔF i and ΔV i It is encapsulated as a high-priority GOOSE instruction and simultaneously sent to all generator sub-controllers that have subscribed to the data through a redundant GOOSE communication network. Step S6: The generator sub-controller executes the received instructions, fine-tuning the diesel generator speed and excitation. The integrated main controller calculates the synchronization condition criteria in real time. |ΔF i |< f , |ΔV i |< v , |Δθ i |< θ ; in f , v , θ Δθ is the preset parallel operation allowable error threshold. i The phase difference between the generator to be paralleled and the system; Step S7: When all parallel operation quasi-synchronization conditions are met simultaneously, the integrated main controller issues a closing command to control the main circuit breaker to close, completing the parallel operation, and then enters the load distribution control stage.

8. The GOOSE communication redundant networking integrated control method for diesel generator parallel operation according to claim 1, characterized in that, In the load distribution control stage described in step S7, a load distribution algorithm based on droop characteristics and PID regulation to decouple reactive and active power is adopted: active power regulation reference value P ref_i The calculation formula is: ； Where P total_load For total load demand, S i Let i be the rated capacity of the i-th generator. The sum of the rated capacities of all online generators; active power regulation ΔP i With reactive power regulation ΔQ i The calculation formula is: The integrated main controller is based on ΔP i and ΔQ i The calculation results generate load distribution instructions, which are then sent out through the GOOSE communication network, enabling each diesel generator to accurately and stably bear the load according to its capacity ratio.

9. The GOOSE communication redundant networking integrated control method for diesel generator parallel operation according to claim 8, characterized in that, During parallel operation, the integrated main controller continuously monitors the circulating current between each generator, and its circulating current value... The calculation formula is: ； in Let i be the output current vector of the i-th generator. The average output current vector for all online generators; when When the voltage exceeds a set threshold, the generator's voltage reference value V is automatically fine-tuned. ref_i This is to suppress circulating currents and optimize system stability.

10. The GOOSE communication redundant networking integrated control method for diesel generator parallel operation according to claim 1, characterized in that, The GOOSE message enjoys the highest transmission priority on the network. Its transmission mechanism ensures that the message can be transmitted within a specific time T even under extreme network load, meeting the industrial-grade real-time requirement of T < 4ms. The entire cycle from single-machine operation to parallel operation is shortened by more than 30% compared to the traditional hard-wired solution.

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