A bidirectionally controllable power frequency modulation method and terminal device

Abstract

The present invention relates to the field of automatic control technology, and in particular to a bidirectionally controllable power frequency modulation method and terminal equipment, the method comprising the following steps: obtaining real-time power data of a load-side device; based on the power data, performing protocol parsing on the data through a protocol parsing module to meet the communication protocol requirements of different systems; after the data is parsed, packaging the data according to different protocols, and sending them to a power grid dispatching system and a power user system respectively; receiving a frequency modulation instruction sent by the power grid dispatching system; judging whether the current load state meets the frequency modulation conditions, and if so, adjusting the power consumption state of the load based on the frequency modulation instruction, and pushing the load state change information to the power user system; if the load does not meet the frequency modulation conditions, feeding back information that the load cannot participate in the frequency modulation to the power grid dispatching system, and realizing bidirectional communication of data and control instructions between the power grid and the power user through the design of multi-channel data transmission and bidirectional control.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a bidirectionally controllable electric power frequency modulation method and terminal equipment. Background Art

[0002] With the development of the power system, the operational stability and power quality of the power grid have become one of the key factors to ensure social stability and economic development. As an important indicator of power quality, the stability of the AC power grid frequency is a core parameter for measuring the stable operation of the power system. When the power grid frequency deviates, especially when it deviates significantly from the rated value, it will not only affect the normal operation of the power equipment, but may also cause the power grid to collapse and cause large-scale power outages. For this reason, frequency modulation technology has gradually become an important part of the operation of the power system. Traditional frequency modulation methods mainly rely on the automatic speed regulation of generator sets and load regulation, and maintain the stability of the power grid frequency through mechanisms such as primary, secondary, and tertiary frequency modulation. However, these traditional frequency modulation methods have some significant defects in practical applications.

[0003] At present, the commonly used frequency regulation method for power grids is to install power grid direct control equipment on the load side, and directly send instructions to these devices when the power grid needs frequency regulation, so as to adjust the power consumption of the load to achieve the purpose of frequency regulation. However, there are several outstanding problems with the existing load-side frequency regulation equipment. First, these devices can only accept the control of the power grid and only support the communication protocol of the power grid, and cannot be compatible with other systems. The data collected by the load equipment can only be transmitted to the power grid dispatching system. Electricity users cannot remotely monitor the operation of the load and can only view it on site, which greatly increases the operation and maintenance costs of electricity users.

[0004] Secondly, when the power grid issues a frequency modulation instruction, the load-side equipment will automatically adjust the operating status of the load, but the electricity user usually cannot know the reason for the load operation change. This information asymmetry often leads to misunderstandings, and the electricity user may mistakenly believe that the equipment has failed, resulting in unnecessary maintenance and inspection costs. In addition, when the electricity user has special requirements in production, security, etc. and needs to manually adjust the operating status of the load, due to the lack of timely feedback mechanism in the existing technology, the power grid cannot know in real time that the load has exited the frequency modulation state, resulting in frequency modulation failure, and it is impossible to quickly switch other load devices to participate in frequency modulation, further increasing the risk of power grid frequency control.

[0005] More importantly, the current load-side frequency regulation equipment does not have the function of two-way control. When the load encounters an accident or needs to exit the frequency regulation urgently during the frequency regulation process, there is a lack of effective information exchange mechanism between the power grid and the load side, and the load cannot be flexibly exited and redistributed. Especially in the scenario where the load status of electricity users changes frequently, the risk of frequency regulation failure increases significantly, further affecting the stable control of the power grid frequency.

[0006] In summary, the existing technology mainly has the following technical problems: First, the load equipment only supports a single power grid communication protocol, and it is impossible to realize remote monitoring and two-way control of the load by the electricity user; second, there is information asymmetry between the power grid and the load side, and the electricity user cannot grasp the frequency modulation status, and the power grid cannot obtain the load exit information in real time, which increases the risk of frequency modulation failure; third, the adaptability and flexibility of the existing frequency modulation equipment are poor, and there is a lack of two-way control and feedback mechanism, which makes it difficult to quickly adjust the state of the load participating in the frequency modulation in an emergency situation, affecting the frequency modulation effect and the stability of the power grid. Summary of the invention

[0007] In view of the above defects or improvement needs of the prior art, the present invention provides a bidirectionally controllable power frequency regulation method and terminal equipment, which can not only solve the problem of information asymmetry in the prior art, but also effectively prevent the frequency regulation failure caused by emergencies through the real-time feedback mechanism of load exiting frequency regulation.

[0008] The present invention provides a bidirectional controllable power frequency modulation method, comprising the following steps:

[0009] Obtaining real-time power data of load-side equipment, wherein the power data includes current, voltage and frequency;

[0010] Based on the power data, a protocol parsing module is used to perform protocol parsing on the data to meet the communication protocol requirements of different systems;

[0011] After data analysis, the data is packaged according to different protocols and sent to the power grid dispatching system and the electricity user system respectively;

[0012] Receive frequency modulation instructions sent by the power grid dispatching system;

[0013] Determine whether the current load state meets the frequency modulation conditions. If so, adjust the power consumption state of the load based on the frequency modulation instruction, and push the load state change information to the power user system;

[0014] If the load does not meet the frequency regulation conditions, the information that the load cannot participate in the frequency regulation is fed back to the power grid dispatching system;

[0015] Receive instructions from electricity users to confirm whether to allow the load to continue to participate in frequency regulation. If allowed, maintain the load in the frequency regulation state. If not allowed, restore the load to normal operation and feedback the load exit frequency regulation status to the power grid dispatching system.

[0016] Preferably, the protocol parsing of the data is based on the communication protocol requirements of different systems, and the parsed data are packaged without affecting each other, and sent to the power grid dispatching system and the electricity user system respectively, to achieve multi-directional data transmission.

[0017] Preferably, after the load status meets the frequency regulation conditions, the frequency regulation status of the load is further notified to the electricity user system, so that the electricity user can understand the frequency regulation participation of the load in real time, thereby obtaining feedback information from the electricity user.

[0018] Preferably, after receiving the notification that the load participates in frequency regulation, the electricity user system confirms whether the load is currently still suitable for frequency regulation through remote control or manual operation, and feeds back the confirmation result to the load-side equipment, thereby realizing two-way frequency regulation control.

[0019] Preferably, after the load-side device receives the exit frequency modulation instruction from the electricity user, the normal power consumption state of the load is restored based on the exit frequency modulation instruction, and the load state recovery information is pushed to the power grid dispatching system, so that the power grid dispatching system synchronously updates the exit state of the load.

[0020] A terminal device for bidirectionally controllable power frequency modulation for executing the method, comprising:

[0021] Data acquisition module, used to collect real-time power data on the load side;

[0022] The protocol analysis module is used to analyze the collected power data to meet the communication protocol requirements of different systems;

[0023] Data transmission module, used to package the data after protocol parsing according to different system requirements and send it to the power grid dispatching system and the power user system;

[0024] The control module is used to receive the frequency modulation instruction of the power grid dispatching system, determine whether the current load state meets the frequency modulation conditions, and if so, control the load to perform the frequency modulation operation; if not, feedback the information that the load cannot be frequency modulated to the power grid dispatching system;

[0025] The user feedback module is used to receive the confirmation instruction of the power user for the load to participate in the frequency regulation, and decide whether to continue to keep the load in the frequency regulation state or restore the load to the normal operating state according to the confirmation instruction.

[0026] Preferably, the real-time power data collected by the data acquisition module includes current, voltage and frequency parameters of the load. The power data is parsed by the protocol parsing module and packaged for transmission without affecting other data, so as to realize two-way data sharing between the power grid and the power user system.

[0027] Preferably, the control module comprises a state determination unit and a load control unit, wherein:

[0028] The state judgment unit is used to judge the load state based on the power grid frequency modulation instruction to confirm whether the load meets the frequency modulation conditions;

[0029] The load control unit is used to perform load frequency modulation operation when the state judgment unit confirms that the load meets the frequency modulation conditions, and restore the normal operation state of the load when the load exits the frequency modulation.

[0030] Preferably, the user feedback module further comprises an information pushing unit and a confirmation receiving unit, wherein:

[0031] The information push unit is used to push information to the electricity user system in real time when the load state changes;

[0032] The confirmation receiving unit is used to receive the confirmation instruction of the power user for the load to participate in the frequency regulation, and feed back the confirmation result to the control module to determine whether the load continues to maintain the frequency regulation state.

[0033] Preferably, the protocol analysis module performs multi-protocol analysis and packaging on the collected data based on the 61850 protocol of the power grid dispatching system and the B interface protocol of the power user system, so as to realize bidirectional data transmission and multi-system compatibility.

[0034] The beneficial effects of the present invention are:

[0035] (1) The present invention realizes the two-way communication of data and control instructions between the power grid and the power user through the design of multi-channel data transmission and two-way control. This method enables the load equipment to not only respond to the frequency modulation instructions of the power grid, but also allows the power user to perform manual control while remotely monitoring in real time, ensuring the flexibility and safety of the load equipment in production, safety and other scenarios.

[0036] (2) In the specific implementation, the present invention supports multi-system transmission of load data through a protocol parsing module, so that the power grid dispatching system and the power user system can independently obtain the real-time load status, realizing multi-directional transmission of data. At the same time, after receiving the frequency modulation instruction, the load device can automatically determine whether it meets the frequency modulation conditions, and perform the frequency modulation operation if it meets the conditions, and push the status information to the power user system in real time. If the frequency modulation conditions are not met, the device will promptly feedback the status that the load cannot participate in the frequency modulation, and the power grid can quickly adjust other load devices to participate in the frequency modulation.

[0037] (3) In practical applications, the bidirectional control characteristics of the present invention enable electricity users to decide whether to continue to participate in frequency modulation based on actual needs such as production and security after receiving notification of load frequency modulation status. If the conditions are not met, an exit instruction can be sent remotely, and the load equipment will resume normal operation in a timely manner and notify the power grid to ensure efficient coordination of frequency modulation. In this way, the present invention not only significantly improves operational flexibility, but also has stronger adaptability in emergency scenarios, thereby greatly improving the stability and safety of power grid frequency control.

[0038] In summary, the present invention overcomes the deficiencies of existing load frequency modulation equipment in terms of protocol adaptability, information symmetry, and control flexibility through mechanisms such as multi-directional data transmission, bidirectional control, and real-time feedback of load equipment, realizes efficient collaboration between the power grid and electricity users, and significantly improves the reliability and flexibility of power grid frequency control. This innovative design effectively meets the current power system's demand for efficient, safe, and flexible control of load frequency modulation, and provides a strong guarantee for the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is the data multiple sending processing flow of the present invention;

[0040] Figure 2 It is the frequency modulation flow chart of the present invention.

[0041] Figure 3 It is a schematic diagram of a terminal device of the present invention.

[0042] Figure 4 It is a logic block diagram of the terminal device of the present invention. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] like Figure 1-4 As shown, the present invention proposes a bidirectional controllable power frequency regulation method, the main purpose of which is to solve the information asymmetry problem between power grid frequency regulation and real-time monitoring of power users. In the prior art, load-side equipment usually only supports the communication protocol of the power grid and only receives control instructions from the power grid. This one-way control not only limits the power user's real-time management ability of the load, but also increases the operation and maintenance costs. The present invention realizes information exchange and control feedback between the power grid and the power user by designing multiple modules such as data acquisition, protocol analysis and data transmission.

[0045] As a preferred embodiment, a data acquisition module 1 is provided in the system of the present invention, which is responsible for real-time acquisition of power parameters of load equipment, including current, voltage and frequency, etc. These data can reflect the working status of the load side in real time and serve as a key basis for frequency modulation judgment. The preferred acquisition frequency of the data acquisition module is 1 second, which ensures the timeliness and accuracy of the information, which is crucial to the stability of power grid frequency control.

[0046] After data collection, the data is transmitted to the protocol analysis module 2. The main function of the protocol analysis module 2 is to perform protocol analysis and conversion on the collected data according to the requirements of different systems to ensure data compatibility. For example, the power grid system usually uses the 61850 protocol, while the power user's system may use other communication protocols (such as the B interface protocol). Therefore, this module can effectively adapt to different protocol standards and provide support for multi-channel data transmission.

[0047] After the protocol parsing is completed, the data transmission module 3 will package the parsed data and send it to the power grid dispatching system and the power user system respectively. The design of the data transmission module 3 ensures the independent transmission of data between different systems, avoiding data confusion and communication conflicts. This two-way data transmission mechanism not only allows the power grid dispatching system to grasp the status of the load in real time, but also allows power users to check the operation of the load equipment at any time, thereby realizing two-way information exchange between the power grid and power users.

[0048] As a preferred embodiment, the present invention has made further innovations in data transmission, and has realized multi-channel analysis and packaging of data through the protocol analysis module 2, meeting the communication requirements of different systems. Traditional load frequency modulation equipment can usually only support a single communication protocol of the power grid, while the present invention ensures that data can be transmitted to both the power grid system and the power user system through multi-protocol analysis, thus achieving multi-system compatibility.

[0049] In the specific implementation process, the protocol parsing module 2 packages the collected data into data packets that adapt to different protocols according to different communication protocols. For example, if the power grid system uses the 61850 protocol, the protocol parsing module converts the data into packets that adapt to the 61850 protocol format and transmits it to the power grid system; if the electricity user system uses the B interface protocol, the data will be converted into a format that adapts to the B interface protocol. Preferably, the present invention sets a buffer mechanism in multi-protocol parsing to ensure smooth data parsing and packaging processes, thereby avoiding freezes or packet loss problems in real-time data transmission.

[0050] Through the above design, the present invention solves the problem of single data transmission of load frequency regulation equipment in the prior art, further enhances the adaptability and scalability of the system, not only meets the needs of power grid frequency regulation control, but also ensures the real-time monitoring needs of electricity users.

[0051] As a preferred embodiment, when the load device meets the frequency modulation conditions, the present invention provides a mechanism for pushing the frequency modulation status information to the power user system so that the user can understand the load status changes during the frequency modulation process. This design is mainly implemented through the information push unit 51. The information push unit 51 is arranged inside the control module 4, and synchronizes the load status to the power user system in real time by receiving feedback from the power grid frequency modulation command.

[0052] Conventional power grid frequency modulation equipment usually only communicates with the power grid system in a one-way manner, and power users cannot promptly learn the specific reasons when the operating status of the load side changes. The two-way push mechanism of the present invention effectively makes up for this defect. Through the information push unit 51, power users can obtain the status information of the load participating in frequency modulation in real time, such as the current and voltage changes of the load, so as to better manage and control the load equipment.

[0053] Preferably, when the load current reaches a certain threshold (such as 20A), the information push unit 51 will automatically push the status to the power user system and prompt the user that the device has entered the frequency modulation state. This function effectively improves the operational transparency of the load device and reduces misoperation or misunderstanding caused by information asymmetry.

[0054] After receiving the push information of the frequency modulation state, the electricity user can decide whether to keep the load in the frequency modulation state according to actual needs. The present invention realizes the real-time confirmation of the user's participation in the frequency modulation through the user feedback module 5. The user feedback module 5 includes an information push unit 51 and a confirmation receiving unit 52, which are respectively used to receive the push information of the power grid frequency modulation instruction and the feedback information of the electricity user.

[0055] Specifically, when the power user believes that the current state of the load is not suitable for continuing frequency modulation, the user can send an exit instruction through the confirmation receiving unit 52. Once the instruction is received, the system will promptly feedback the state of the load exiting frequency modulation to the power grid dispatching system to ensure that the power grid can adjust other loads to participate in frequency modulation in real time. This design not only increases the flexibility of load frequency modulation, but also effectively avoids the production or safety risks of power users caused by frequency modulation.

[0056] Preferably, when the electricity user confirms that the current state of the load is not suitable for frequency regulation, the confirmation receiving unit 52 will immediately initiate an exit instruction to ensure that the load returns to normal within 500 milliseconds and reports to the power grid system through feedback information. This fast response mechanism greatly improves the reliability and adaptability of load frequency regulation in practical applications.

[0057] As a preferred embodiment, when the electricity user decides to exit the frequency modulation, the load control unit 42 is responsible for executing the load recovery operation to ensure that the load equipment quickly returns to a normal state after exiting the frequency modulation. At the same time, the load control unit 42 also feeds back the information of the recovery operation to the power grid dispatching system, so that the power grid can obtain the state of the load exiting the frequency modulation in real time. This feedback mechanism not only ensures the flexibility of the load frequency modulation, but also effectively improves the overall reliability of the power grid frequency modulation.

[0058] In practical applications, the load control unit 42 can automatically restore the load operation according to the user's instructions and the current state of the load. For example, if the load current exceeds the safe range (such as 25A), the system will give priority to suspending the frequency modulation operation and restore the load to the safe value range. This operation process is coordinated by the control module 4 as a whole to ensure the stability and safety of the frequency modulation operation. Through this design, the present invention has achieved significant improvements in the flexibility, response speed and safety of load frequency modulation control, making up for the defects of one-way control and insufficient feedback in the prior art.

[0059] The overall technical solution of the present invention not only improves the accuracy of frequency modulation operation, but also optimizes and improves the system in terms of information flow, feedback response, etc. through the coordinated work of modules such as data acquisition, protocol analysis, data transmission, two-way control and real-time feedback. These functions cooperate with each other to realize two-way frequency modulation control and real-time data sharing between the power grid and the power users, providing reliable technical support for the safe and stable operation of the power system.

[0060] As a preferred embodiment, the present invention also includes a terminal device for bidirectional controllable power frequency modulation, which is designed to provide a complete solution for integrated data acquisition, protocol analysis, data transmission, control and feedback, so as to effectively realize bidirectional information transmission and dynamic control of frequency modulation operation in the process of power grid frequency modulation. The terminal device is composed of multiple core modules, including data acquisition module 1, protocol analysis module 2, data transmission module 3, control module 4 and user feedback module 5. The synergistic effect of each module ensures that the frequency modulation needs of the power grid and power users are met.

[0061] In practical applications, the data acquisition module 1 obtains the operating status information of the load by real-time monitoring of the current, voltage, frequency and other parameters of the load-side equipment. The real-time performance of data acquisition is crucial to the stability of the grid frequency during the frequency modulation process. Therefore, the present invention preferably sets the acquisition frequency to 1 second to ensure the accuracy of the data. After the collected data is transmitted to the protocol analysis module 2, it will be analyzed and converted according to the system requirements to adapt it to the different communication protocols of the grid and the electricity users.

[0062] As a preferred embodiment, the design of the protocol parsing module 2 enables the terminal device to have multi-system adaptability. For example, the 61850 protocol is commonly used in the power grid dispatching system, while the power user's system may use a different protocol (such as the B interface protocol). Through the parsing and conversion of the protocol parsing module, the data can be packaged into data packets adapted to different systems, and then sent to the power grid dispatching system and the power user system respectively through the data transmission module 3. This process not only ensures the smooth transmission of data, but also improves the compatibility of the terminal device, so that it can be widely adapted to different types of communication environments.

[0063] As a preferred embodiment, in the terminal device of the present invention, the acquisition function of the data acquisition module 1 further expands the types and parameter ranges of data to meet the requirements of power grid frequency regulation for data accuracy and real-time performance. In addition to collecting current, voltage and frequency, the module can also collect other load parameters to fully reflect the operating status of the load. In order to ensure the adaptability of the data, the interface between the data acquisition module 1 and the protocol analysis module 2 has been optimized to ensure that the data can be quickly transmitted to the protocol analysis module for processing after collection.

[0064] As a preferred embodiment, the protocol parsing module 2 parses the load data into a protocol format that complies with the power grid dispatching system and the power user system according to the requirements of different systems to ensure the multi-system compatibility of the data. For example, when the load current exceeds a certain threshold, the data transmission module 3 marks the information as an emergency state and transmits it to the relevant system in priority for rapid response. Through the multi-protocol parsing and transmission mechanism, the adaptability of the terminal device of the present invention is significantly improved, ensuring the application under multiple communication protocols.

[0065] In order to enhance the accuracy and response speed of control, the control module 4 of the present invention is provided with two core submodules, namely, a state judgment unit 41 and a load control unit 42. After receiving the frequency modulation instruction from the power grid, the state judgment unit 41 will immediately analyze the operating state of the current load and determine whether it meets the frequency modulation conditions. For example, when the frequency deviation exceeds 0.5Hz and the load current is within the adjustable range (such as less than 25A), the state judgment unit 41 will determine that the load meets the frequency modulation conditions and transmit the judgment result to the load control unit 42.

[0066] As a preferred embodiment, the load control unit 42 performs specific frequency modulation operations under the instruction of the state judgment unit 41. If the load meets the frequency modulation conditions, the load control unit 42 will adjust the power consumption state of the load to reduce the frequency deviation. When the load exits the frequency modulation, the load control unit 42 will automatically restore the normal operation state of the load and send a recovery signal to the power grid dispatching system. Through the coordinated work of the state judgment unit and the load control unit, the present invention realizes the dual functions of real-time monitoring and intelligent control in the frequency modulation process, effectively improving the reliability and response speed of the system.

[0067] The present invention further designs a user feedback module 5 so that the power user can keep control of the device status during the load frequency modulation process. The user feedback module 5 includes an information push unit 51 and a confirmation receiving unit 52 to ensure smooth flow of information between the power grid and the power user. The main function of the information push unit 51 is to immediately push the status information to the power user system when the operating status of the load changes (such as entering the frequency modulation state), so as to ensure the user's right to know about the frequency modulation operation.

[0068] As a preferred embodiment, the confirmation receiving unit 52 is used to receive feedback instructions from the electricity user. For example, when the electricity user believes that the load is not suitable for continuing frequency modulation, the confirmation receiving unit 52 can issue an exit instruction. After receiving the exit instruction, the confirmation receiving unit 52 immediately transmits the instruction to the control module 4, so that the load device quickly exits the frequency modulation and returns to a normal working state. Through the coordinated work of the information push unit 51 and the confirmation receiving unit 52, the electricity user can not only monitor the frequency modulation status in real time, but also manually adjust the load status when necessary, thereby ensuring the flexibility and safety of the equipment.

[0069] As a preferred embodiment, the design of the protocol parsing module 2 takes into account the different communication protocols of the power grid dispatching system and the power user system, so that the load-side equipment can support multi-protocol parsing and data packaging transmission, ensuring the seamless flow of data between different systems. The protocol parsing module 2 in the present invention supports multiple protocols, so that data can be automatically converted according to the requirements of different systems during transmission, thereby improving the reliability and compatibility of data transmission.

[0070] In specific implementation, when the power grid dispatching system adopts the 61850 protocol and the power user system adopts the B interface protocol, the protocol parsing module 2 will parse the load data into data packets adapted to each system according to the communication requirements to ensure independent transmission of the data. Preferably, a data buffer is provided in the data transmission module 3 to prevent data loss or delay during multi-protocol conversion, further enhancing the stability of the system. Through this multi-protocol parsing and data transmission design, the terminal device of the present invention can achieve multi-system compatibility and real-time data transmission, providing more reliable technical support for power grid frequency control.

[0071] The present invention not only provides an intelligent control and feedback mechanism for the realization of load frequency modulation, but also has significant advantages in data transmission, protocol analysis and system compatibility. The mutual cooperation between the modules fully guarantees the stability of power grid frequency modulation, the flexibility of the load side and the control of electricity users.

[0072] In summary, the present invention provides a bidirectional controllable power frequency modulation method and terminal device, which realizes real-time data sharing and bidirectional control of loads between the power grid and power users through the collaborative work of the data acquisition module 1, the protocol analysis module 2, the data transmission module 3, the control module 4 and the user feedback module 5. Each step and module performs data analysis and packaging based on different protocol requirements to ensure seamless data transmission and realize flexible load regulation. The system design meets the bidirectional control requirements of power frequency modulation on load-side equipment, and has good application prospects and innovative value.

[0073] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bidirectional controllable power frequency modulation method, characterized in that: The following steps are involved: Obtaining real-time power data of load-side equipment, wherein the power data includes current, voltage and frequency; Based on the power data, a protocol parsing module is used to perform protocol parsing on the data to meet the communication protocol requirements of different systems; After data analysis, the data is packaged according to different protocols and sent to the power grid dispatching system and the electricity user system respectively; Receive frequency modulation instructions sent by the power grid dispatching system; Determine whether the current load state meets the frequency modulation condition. If it meets the condition, adjust the power consumption state of the load based on the frequency modulation instruction, and push the power consumption state change information of the load to the power user system; If the load does not meet the frequency regulation conditions, the information that the load cannot participate in the frequency regulation is fed back to the power grid dispatching system; Receive instructions from electricity users to confirm whether to allow the load to continue to participate in frequency regulation. If allowed, maintain the load in the frequency regulation state. If not allowed, restore the load to normal operation and feedback the load exit frequency regulation status to the power grid dispatching system.

2. The power frequency modulation method according to claim 1, characterized in that: The protocol analysis of the data is based on the communication protocol requirements of different systems. The analyzed data are packaged without affecting each other and sent to the power grid dispatching system and the electricity user system respectively, realizing multi-directional data transmission.

3. The power frequency modulation method according to claim 1 or 2, characterized in that: After the load status meets the frequency regulation conditions, the frequency regulation status of the load is further notified to the power user system, so that the power user can understand the frequency regulation participation of the load in real time, thereby obtaining feedback information from the power user.

4. The power frequency modulation method according to claim 3, characterized in that: After receiving the notification that the load is participating in frequency regulation, the electricity user system confirms whether the load is currently suitable for frequency regulation through remote control or manual operation, and feeds back the confirmation result to the load-side equipment, thereby realizing two-way frequency regulation control.

5. The power frequency modulation method according to claim 4, characterized in that: After the load-side device receives the exit frequency modulation instruction from the electricity user, it restores the normal power consumption state of the load based on the exit frequency modulation instruction, and pushes the load state recovery information to the power grid dispatching system, so that the power grid dispatching system synchronously updates the exit state of the load.

6. A terminal device for bidirectionally controllable power frequency modulation for executing the method according to any one of claims 1 to 5, characterized in that: include: Data acquisition module, used to collect real-time power data on the load side; The protocol analysis module is used to analyze the collected power data to meet the communication protocol requirements of different systems; Data transmission module, used to package the data after protocol parsing according to different system requirements and send it to the power grid dispatching system and the power user system; The control module is used to receive the frequency modulation instruction of the power grid dispatching system, determine whether the current load state meets the frequency modulation conditions, and if so, control the load to perform the frequency modulation operation; if not, feedback the information that the load cannot be frequency modulated to the power grid dispatching system; The user feedback module is used to receive the confirmation instruction of the power user for the load to participate in the frequency regulation, and decide whether to continue to keep the load in the frequency regulation state or restore the load to the normal operating state according to the confirmation instruction.

7. The terminal device according to claim 6, characterized in that: The real-time power data collected by the data acquisition module includes the current, voltage and frequency parameters of the load. The power data is parsed by the protocol parsing module and packaged for transmission without affecting other data, so as to realize two-way data sharing between the power grid and the power user system.

8. The terminal device according to claim 7, characterized in that: The control module includes a state determination unit and a load control unit, wherein: The state judgment unit is used to judge the load state based on the power grid frequency modulation instruction to confirm whether the load meets the frequency modulation conditions; The load control unit is used to perform load frequency modulation operation when the state judgment unit confirms that the load meets the frequency modulation conditions, and restore the normal operation state of the load when the load exits the frequency modulation.

9. The terminal device according to any one of claims 6 to 8, characterized in that: The user feedback module further includes an information push unit and a confirmation receiving unit, wherein: The information push unit is used to push information to the electricity user system in real time when the load state changes; The confirmation receiving unit is used to receive the confirmation instruction of the power user for the load to participate in the frequency regulation, and feed back the confirmation result to the control module to determine whether the load continues to maintain the frequency regulation state.

10. The terminal device according to claim 9, characterized in that: The protocol analysis module performs multi-protocol analysis and packaging on the collected data based on the 61850 protocol of the power grid dispatching system and the B interface protocol of the electricity user system, thus realizing two-way data transmission and multi-system compatibility.

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