Power grid frequency modulation control system alarm method, device, medium and equipment

Abstract

This disclosure relates to an alarm method, device, medium, and equipment for a power grid frequency regulation control system. The power grid frequency regulation control system is used for frequency regulation control of thermal power units. The method includes: acquiring the same-source frequency regulation quantity and AGC frequency regulation quantity at the current time; obtaining a first frequency regulation quantity based on the difference between the AGC frequency regulation quantity corresponding to the current time and the AGC frequency regulation quantity acquired before the current time by a first preset time; issuing a first load adjustment command based on the first frequency regulation quantity; issuing a second load adjustment command based on the same-source frequency regulation quantity corresponding to the current time; and controlling an alarm device to sound an alarm when the adjustment direction of the first load adjustment command and the adjustment direction of the second load adjustment command are opposite. This disclosure can promptly issue an alarm when primary frequency regulation and AGC frequency regulation are reversed, reminding management personnel to understand the real-time status of the frequency regulation control system and take appropriate action, thereby reducing the impact of the "two detailed rules" assessment.

Description

Technical Field

[0001] This disclosure relates to the field of automatic control technology for thermal power units, and more specifically, to an alarm method, device, medium, and equipment for a power grid frequency regulation control system. Background Technology

[0002] Currently, when primary frequency regulation and AGC frequency regulation of a thermal power unit are reversed, the primary frequency regulation qualification rate will fail to meet the standards, thus affecting the assessment according to the "two detailed rules". However, if the reverse regulation occurs, an application for exemption from assessment can be submitted to the provincial dispatch center after monitoring the direction of regulation.

[0003] The existing control method is to lock out AGC when there is a conflict between primary frequency modulation and AGC. However, this only gives priority to primary frequency modulation and still results in the "two detailed rules" assessment. Summary of the Invention

[0004] The purpose of this disclosure is to provide an alarm method for a power grid frequency regulation control system to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, in a first aspect, this disclosure provides an alarm method for a power grid frequency regulation control system, wherein the power grid frequency regulation control system is used for frequency regulation control of thermal power units, the method comprising:

[0006] Obtain the frequency modulation of the same source and the frequency modulation of AGC at the current time;

[0007] The first frequency modulation value is obtained based on the difference between the AGC frequency modulation value corresponding to the current time and the AGC frequency modulation value obtained before the first preset time.

[0008] Based on the first frequency modulation amount, a first load adjustment command is issued;

[0009] Based on the frequency modulation amount corresponding to the current time, a second load adjustment command is issued;

[0010] If the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command, the alarm will be triggered.

[0011] Optionally, issuing the first load adjustment command based on the first frequency modulation amount includes:

[0012] If the first frequency adjustment amount is greater than the first preset threshold, the first load adjustment command issued is determined to be a load increase command;

[0013] If the first frequency adjustment amount is less than the second preset threshold, the first load adjustment command issued is determined to be a load reduction command, and the second preset threshold is less than the first preset threshold.

[0014] Optionally, issuing a second load adjustment command based on the frequency modulation amount corresponding to the current time includes:

[0015] If the frequency modulation amount corresponding to the current time is less than the third preset threshold, the issued second load adjustment command is determined to be a load reduction command;

[0016] If the frequency modulation amount corresponding to the current time is greater than the fourth preset threshold, the issued second load adjustment command is determined to be a load increase command, and the third preset threshold is less than the fourth preset threshold.

[0017] Optionally, the step of controlling the alarm to sound when the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command includes:

[0018] When the first load adjustment command is an increase load command and the second load adjustment command is a decrease load command, or when the first load adjustment command is a decrease load command and the second load adjustment command is an increase load command, the alarm is controlled to sound an alarm.

[0019] Optionally, if the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command, the method further includes:

[0020] The AGC is locked until the frequency modulation value is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, at which point the AGC is reopened.

[0021] Optionally, the first preset threshold is 2MW, and the second preset threshold is -2MW.

[0022] Optionally, the third preset threshold is -0.6MW, and the fourth preset threshold is 0.6MW.

[0023] Optionally, the method further includes:

[0024] The frequency modulation quantity and AGC frequency modulation quantity acquired each time, the time of each alarm issued, the time of controlling AGC to lock after each alarm, and the time of controlling AGC to restart after each alarm are recorded in the form of reports.

[0025] In response to an assessment request sent by the assessment server, the report is sent to the assessment server, and the report is used to apply to the assessment server for exemption from assessment.

[0026] Secondly, this disclosure provides an alarm device for a power grid frequency regulation control system, wherein the power grid frequency regulation control system is used for frequency regulation control of thermal power units, and the device includes:

[0027] The data acquisition module is used to acquire the same-source frequency modulation and AGC frequency modulation at the current time;

[0028] The calculation module is used to obtain a first frequency modulation amount based on the difference between the AGC frequency modulation amount corresponding to the current time and the AGC frequency modulation amount obtained before the first preset time.

[0029] The control module is configured to issue a first load adjustment command based on the first frequency modulation amount, issue a second load adjustment command based on the same frequency modulation amount corresponding to the current time, and control the alarm to sound an alarm when the adjustment direction of the first load adjustment command and the adjustment direction of the second load adjustment command are opposite.

[0030] Thirdly, this disclosure provides a non-transitory computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps of the method described in any of the first aspects.

[0031] Fourthly, this disclosure provides an electronic device, comprising:

[0032] A memory on which computer programs are stored;

[0033] A processor for executing the computer program in the memory to implement the steps of the method of any one of the first aspects.

[0034] In the above technical solution, the first load regulation command representing the AGC frequency regulation direction and the second load regulation command representing the primary frequency regulation direction are determined by the AGC frequency regulation quantity and the same-source frequency regulation quantity, respectively. When reverse frequency regulation control occurs, the control alarm will sound. This disclosure can issue an alarm in a timely manner when reverse regulation occurs between primary frequency regulation and AGC frequency regulation, so as to remind managers to understand the real-time status of the frequency regulation control system and take appropriate action, thereby reducing the assessment of the "two detailed rules" and achieving the effect of ensuring power grid safety.

[0035] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1The flowchart of an alarm method for a power grid frequency regulation control system provided in an exemplary embodiment is shown;

[0038] Figure 2 A flowchart illustrating a specific implementation of step S130 provided in an exemplary embodiment is shown;

[0039] Figure 3 A flowchart illustrating a specific implementation of step S140 provided in an exemplary embodiment is shown;

[0040] Figure 4 A flowchart illustrating a specific implementation of step S150 provided in an exemplary embodiment is shown;

[0041] Figure 5 A logic diagram of an alarm circuit for a power grid frequency regulation control system provided in an exemplary embodiment is shown.

[0042] Figure 6 A schematic diagram of an alarm device for a power grid frequency regulation control system provided in an exemplary embodiment is shown;

[0043] Figure 7 A block diagram of an electronic device provided in an exemplary embodiment is shown. Detailed Implementation

[0044] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0045] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0046] It is understandable that in the frequency regulation control of the power grid, there are situations where the adjustment direction of AGC frequency regulation is opposite to that of primary frequency regulation. This will cause the integral energy of primary frequency regulation to be unqualified, which will affect the control effect of primary frequency regulation.

[0047] This solution aims to address the issue of failing to issue an alarm and promptly apply for exemption from assessment when there is a conflict between the primary frequency regulation and AGC frequency regulation of a thermal power unit. It also adds relevant assessment requirements for thermal power plants in accordance with the "two detailed rules".

[0048] Figure 1 A flowchart illustrating an alarm method for a power grid frequency regulation control system provided in an exemplary embodiment is shown. This power grid frequency regulation control system is used for frequency regulation control of thermal power units. Please refer to... Figure 1 The method includes:

[0049] S110, obtain the current source frequency modulation quantity and AGC frequency modulation quantity.

[0050] Here, the same source frequency modulation quantity and AGC frequency modulation quantity are obtained and stored at the same time. This is used to obtain the AGC frequency modulation quantity corresponding to any previous moment when calculating the first frequency modulation quantity, and to record these data when outputting the exemption report.

[0051] S120: The first frequency modulation value is obtained based on the difference between the AGC frequency modulation value corresponding to the current time and the AGC frequency modulation value obtained before the first preset duration of the current time.

[0052] The current time is consistent with the current time shown in step S110.

[0053] Here, the first preset duration can be, for example, 30 seconds, and the first frequency modulation amount represents the AGC frequency modulation change amount within the preset duration range. For example, the first frequency modulation amount can be expressed as the difference between the AGC frequency modulation amount obtained in step S110 at the current time and the AGC frequency modulation amount obtained 30 seconds before the current time.

[0054] S130: Based on the first frequency regulation amount, issue the first load regulation command.

[0055] Here, the first load adjustment command is determined to be either a load increase command or a load decrease command based on the preset first comparison value and the value of the first frequency adjustment value. Specifically, for example... Figure 2 The method steps shown include a first preset threshold and a second preset threshold as the first comparison quantity.

[0056] S140 issues a second load adjustment command based on the corresponding frequency modulation amount of the current time.

[0057] Here, the second load adjustment command is determined as either a load increase command or a load decrease command based on the preset second comparison value and the value of the corresponding frequency modulation value at the current time. Specifically, for example... Figure 3 The method steps shown include a second comparison quantity comprising a third preset threshold and a fourth preset threshold.

[0058] S150: If the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command, the alarm will be activated.

[0059] Specifically, when the adjustment directions of the first load adjustment command determined in step S130 and the second load adjustment command determined in step S140 are reversed, the power grid frequency regulation control system controls the alarm to sound an alarm. Here, the alarm can be installed, for example, in the central control room.

[0060] The power grid frequency regulation control system can be either a PLC or a DCS.

[0061] In a specific implementation, step S150 includes: when the first load adjustment command is an increase load command and the second load adjustment command is a decrease load command, or when the first load adjustment command is a decrease load command and the second load adjustment command is an increase load command, controlling the alarm to sound an alarm.

[0062] In the above scheme, the first load regulation command representing the AGC frequency regulation direction and the second load regulation command representing the primary frequency regulation direction are determined by the AGC frequency regulation quantity and the same-source frequency regulation quantity, respectively. When reverse frequency regulation control occurs, the control alarm will sound. This disclosure can issue an alarm in a timely manner when reverse regulation occurs between primary frequency regulation and AGC frequency regulation, so as to remind the management personnel to understand the real-time status of the frequency regulation control system and take appropriate action, thereby reducing the assessment of the "two detailed rules" and achieving the effect of ensuring power grid safety.

[0063] Figure 2 A flowchart illustrating a specific implementation of step S130 provided in an exemplary embodiment is shown below. Please refer to... Figure 2 The method includes:

[0064] S131, if the first frequency adjustment amount is greater than the first preset threshold, the first load adjustment command issued is determined to be a load increase command.

[0065] S132, if the first frequency adjustment amount is less than the second preset threshold, determine that the first load adjustment command issued is a load reduction command, and the second preset threshold is less than the first preset threshold.

[0066] In one possible implementation, the first preset threshold can be 2MW, and the second preset threshold can be -2MW.

[0067] For example, if the first frequency regulation amount calculated in step S120 is greater than 2MW, the power grid frequency regulation control system issues a load increase command to improve the working efficiency of the thermal power unit; if the first frequency regulation amount is less than -2MW, the power grid frequency regulation control system issues a load decrease command to reduce the working load of the thermal power unit.

[0068] In the above scheme, based on a pre-set first and second preset thresholds, the system compares and determines whether the first frequency regulation amount is greater than the first preset threshold and whether it is less than the second preset threshold. If the corresponding judgment conditions are met, load increase and load decrease commands are issued respectively. This disclosure can achieve timely and effective issuance of load adjustment commands under preset conditions to maintain the normal operation of thermal power units.

[0069] Figure 3A flowchart illustrating a specific implementation of step S140 provided in an exemplary embodiment is shown below. Please refer to... Figure 3 The method includes:

[0070] S141, if the frequency modulation amount corresponding to the current time is less than the third preset threshold, determine that the issued second load adjustment command is a load reduction command.

[0071] S142, if the frequency modulation amount corresponding to the current time is greater than the fourth preset threshold, determine that the issued second load adjustment command is a load increase command, and the third preset threshold is less than the fourth preset threshold.

[0072] In one possible implementation, the third preset threshold can be -0.6MW, and the fourth preset threshold can be 0.6MW.

[0073] For example, if the frequency regulation quantity corresponding to the current time obtained through step S110 is less than -0.6MW, the power grid frequency regulation control system issues a load reduction command to reduce the working load of the thermal power unit; if the frequency regulation quantity is greater than 0.6MW, the power grid frequency regulation control system issues a load increase command to improve the working efficiency of the thermal power unit.

[0074] In the above scheme, based on pre-set third and fourth preset thresholds, the system compares and determines whether the frequency regulation quantity is less than the third preset threshold and whether it is greater than the fourth preset threshold. If the corresponding judgment conditions are met, load reduction and load increase commands are issued respectively. This disclosure can achieve timely and effective issuance of load adjustment commands under preset conditions to maintain the normal operation of thermal power units.

[0075] In a specific implementation, step S150 further includes: controlling the AGC to lock until the same source frequency modulation amount is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, and then controlling the AGC to open again.

[0076] Here, the third and fourth preset thresholds can be set according to actual needs.

[0077] Figure 4 A flowchart illustrating a specific implementation of step S150 provided in an exemplary embodiment is shown below. Please refer to... Figure 4 The method includes:

[0078] S151 records the acquired frequency modulation quantity and AGC frequency modulation quantity, the time of each alarm, the time of controlling AGC to lock after each alarm, and the time of controlling AGC to restart after each alarm in the form of a report.

[0079] It can be understood that the report content includes: the frequency modulation amount obtained each time, the frequency modulation amount of AGC obtained each time, the time corresponding to each alarm, the time corresponding to the completion of controlling AGC to lock after each alarm, and the time corresponding to the completion of controlling AGC to restart after each alarm.

[0080] S152, in response to the assessment request sent by the assessment server, sends a report to the assessment server, which is used to apply to the assessment server for exemption from assessment.

[0081] Here, when a power plant using the grid frequency regulation control system appears in the daily frequency regulation assessment list released by the National Energy Administration, operators can check the reports and, if there is a reversal between primary frequency regulation and AGC, send an exemption request to the National Energy Administration's assessment server to reduce the economic losses caused by the assessment and ensure the power plant's maximum revenue.

[0082] In the above scheme, when power plants need to be assessed, they can apply for exemption from assessment by submitting a report to the assessor. This can avoid economic losses caused by the assessment and effectively ensure the maximization of the power plant's revenue.

[0083] Figure 5 A logic diagram of an alarm circuit for a power grid frequency regulation control system provided in an exemplary embodiment is shown. Please refer to... Figure 5 The circuit includes: input / output ports, hysteresis generator, subtractor, greater than comparator, less than comparator, rising edge flip-flop, AND gate, and OR gate.

[0084] The input value of the AGC load regulation input is the AGC frequency modulation value. The output of the AGC load regulation is connected to the A input of the subtractor and the input of the 30s lag generator. The output of the 30s lag generator is connected to the B input of the subtractor. The output of the subtractor is connected to the A input of the first greater than comparator and the A input of the first less than comparator. The output of the first greater than comparator is connected to the A input of the first AND gate, and the output of the first less than comparator is connected to the A input of the second AND gate. The input value of the primary frequency modulation load regulation input is the same source frequency modulation value. The output of the primary frequency modulation load regulation... Connect the A input terminal of the second less-than comparator and the A input terminal of the second greater-than comparator. Connect the output terminal of the second less-than comparator to the A input terminal of the first rising-edge flip-flop. Connect the output terminal of the second greater-than comparator to the A input terminal of the second rising-edge flip-flop. Connect the output terminal of the first rising-edge flip-flop to the B input terminal of the first AND gate. Connect the output terminal of the second rising-edge flip-flop to the B input terminal of the second AND gate. Connect the output terminal of the first AND gate to the A input terminal of the OR gate. Connect the output terminal of the second AND gate to the B input terminal of the OR gate. Connect the output terminal of the OR gate to the control input port of the report generation instruction and the control input port of the AGC lockout instruction.

[0085] Furthermore, it is worth noting that the input value of the B input terminal of the first greater than comparator is a first preset threshold, for example, 2MW; the input value of the B input terminal of the first less than comparator is a second preset threshold, for example, -2MW; the input value of the B input terminal of the second less than comparator is a third preset threshold, for example, -0.6MW; the input value of the B input terminal of the second greater than comparator is a fourth preset threshold, for example, 0.6MW; and the input values ​​of the B input terminals of the first rising edge trigger and the second rising edge trigger can both be, for example, 3s.

[0086] For example, in the AGC frequency regulation control of a thermal power unit, the input terminal of the AGC load adjustment command obtains the AGC frequency regulation amount corresponding to each moment, inputs the AGC frequency regulation amount corresponding to the current time to the A input terminal of the subtractor and the input terminal of the 30s lag generator, at which time the output terminal of the 30s lag generator outputs the AGC frequency regulation amount 30 seconds before the current time and inputs this value to the B input terminal of the subtractor, the output terminal of the subtractor outputs the first frequency regulation amount and inputs the first frequency regulation amount to the A input terminal of the first greater than comparator and the first less than comparator. The A input of the comparator is configured such that the first frequency modulation value equals the AGC frequency modulation value corresponding to the current time minus the AGC frequency modulation value 30 seconds before the current time. When the value of the first frequency modulation value is greater than 2, the output of the first greater than comparator is set to 1; otherwise, it is set to 0, and the switch signal of the output of the first greater than comparator is input to the A input of the first AND gate. When the value of the first frequency modulation value is less than -2, the output of the first less than comparator is set to 1; otherwise, it is set to 0, and the switch signal of the output of the first less than comparator is input to the A input of the second AND gate.

[0087] For example, in the primary frequency regulation control of a thermal power unit, the input terminal of the primary frequency regulation load adjustment command obtains the corresponding homogeneous frequency regulation quantity at each moment, and inputs the homogeneous frequency regulation quantity corresponding to the current time to the A input terminal of the second greater than comparator and the A input terminal of the second less than comparator. When the value of the homogeneous frequency regulation quantity is less than -0.6, the output terminal of the second less than comparator is set to 1 and input to the A input terminal of the first rising edge trigger; otherwise, it is set to 0. When the A input terminal of the first rising edge trigger is set to 1, the output terminal of the first rising edge trigger is set to 1 after a delay of 3 seconds; otherwise, it is set to 0, and the switch signal of the output terminal of the first rising edge trigger is input to the B input terminal of the first AND gate. When the value of the homogeneous frequency regulation quantity is greater than 0.6, the output terminal of the second greater than comparator is set to 1 and input to the A input terminal of the second rising edge trigger; otherwise, it is set to 0. When the A input terminal of the second rising edge trigger is set to 1, the output terminal of the second rising edge trigger is set to 1 after a delay of 3 seconds; otherwise, it is set to 0, and the switch signal of the output terminal of the second rising edge trigger is input to the B input terminal of the second AND gate.

[0088] For example, the output of the first AND gate is set to 1 only when all inputs of the first AND gate are set to 1, otherwise it is set to 0; the output of the second AND gate is set to 1 only when all inputs of the second AND gate are set to 1, otherwise it is set to 0; the output of the OR gate is set to 1 when either the first AND gate or the second AND gate is set to 1, otherwise it is set to 0, and the switch value of the output of the OR gate is input to the input of the report generation command and the input of the AGC lockout command. When the input of the report generation command is set to 1, the power grid frequency regulation control system controls the generation of the exemption report, and when the input of the AGC lockout command is set to 1, the power grid frequency regulation control system controls the issuance of the AGC lockout command to realize the AGC lockout.

[0089] Figure 6 A schematic diagram of an alarm device for a power grid frequency regulation control system provided in an exemplary embodiment is shown. The power grid frequency regulation control system is used for frequency regulation control of thermal power units, such as... Figure 6 As shown, the alarm device 200 of the power grid frequency regulation control system includes:

[0090] The data acquisition module 210 is used to acquire the same source frequency modulation quantity and AGC frequency modulation quantity at the current time.

[0091] The calculation module 220 is used to obtain the first frequency modulation amount based on the difference between the AGC frequency modulation amount corresponding to the current time and the AGC frequency modulation amount obtained before the first preset duration of the current time.

[0092] The control module 230 is used to issue a first load adjustment command based on the first frequency modulation amount, to issue a second load adjustment command based on the same frequency modulation amount corresponding to the current time, and to control the alarm to sound an alarm when the adjustment direction of the first load adjustment command and the adjustment direction of the second load adjustment command are opposite.

[0093] Optionally, the control module 230 is further configured to determine that the first load adjustment command issued is a load increase command when the first frequency adjustment amount is greater than the first preset threshold, and to determine that the first load adjustment command issued is a load decrease command when the first frequency adjustment amount is less than the second preset threshold, wherein the second preset threshold is less than the first preset threshold.

[0094] Optionally, the control module 230 is further configured to determine that the issued second load adjustment command is a load reduction command when the frequency modulation amount corresponding to the current time is less than a third preset threshold, and to determine that the issued second load adjustment command is a load increase command when the frequency modulation amount corresponding to the current time is greater than a fourth preset threshold, wherein the third preset threshold is less than the fourth preset threshold.

[0095] Optionally, the control module 230 is further configured to control the alarm to sound when the first load adjustment command is an increase load command and the second load adjustment command is a decrease load command, or when the first load adjustment command is a decrease load command and the second load adjustment command is an increase load command.

[0096] Optionally, the control module 230 is also used to control the AGC to lock out until the same source frequency modulation amount is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, and then control the AGC to be turned on again.

[0097] Optionally, the first preset threshold is 2MW and the second preset threshold is -2MW.

[0098] Optionally, the third preset threshold is -0.6MW and the fourth preset threshold is 0.6MW.

[0099] Optionally, the control module 230 is also used to record the frequency modulation quantity and AGC frequency modulation quantity acquired each time, the time of each alarm issued, the time of controlling AGC to lock after each alarm, and the time of controlling AGC to restart after each alarm in the form of a report, and to send a report to the assessment server in response to the assessment request sent by the assessment server. The report is used to apply to the assessment server for exemption from assessment.

[0100] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0101] Figure 7 This is a block diagram illustrating an electronic device according to an exemplary embodiment. For example, electronic device 700 may be provided as a server. (Refer to...) Figure 7 The electronic device 700 includes a processor 701, which may be one or more, and a memory 702 for storing computer programs executable by the processor 701. The computer programs stored in the memory 702 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processor 701 may be configured to execute the computer program to perform the alarm method of the power grid frequency regulation control system described above.

[0102] Additionally, the electronic device 700 may also include a power supply component 703 and a communication component 704. The power supply component 703 can be configured to perform power management of the electronic device 700, and the communication component 704 can be configured to enable communication of the electronic device 700, such as wired or wireless communication. Furthermore, the electronic device 700 may also include an input / output (I / O) interface 705. The electronic device 700 can operate on an operating system, such as Windows Server, stored in the memory 702. TMMac OSX TM Unix TM Linux TM etc.

[0103] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, which, when executed by a processor, implement the steps of the alarm method of the power grid frequency regulation control system described above. For example, the non-transitory computer-readable storage medium may be the memory 702 including program instructions described above, which may be executed by the processor 701 of the electronic device 700 to complete the alarm method of the power grid frequency regulation control system described above.

[0104] In another exemplary embodiment, a computer program product is also provided, which includes a computer program executable by a programmable device, the computer program having a code portion for performing the alarm method of the power grid frequency regulation control system described above when executed by the programmable device.

[0105] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0106] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0107] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An alarm method for a power grid frequency regulation control system, characterized in that, The power grid frequency regulation control system is used for frequency regulation control of thermal power units, and the method includes: Obtain the frequency modulation of the same source and the frequency modulation of AGC at the current time; The first frequency modulation value is obtained based on the difference between the AGC frequency modulation value corresponding to the current time and the AGC frequency modulation value obtained before the first preset time. Based on the first frequency modulation amount, a first load adjustment command is issued; Based on the frequency modulation amount corresponding to the current time, a second load adjustment command is issued, including: if the frequency modulation amount corresponding to the current time is less than a third preset threshold, determining that the issued second load adjustment command is a load reduction command; if the frequency modulation amount corresponding to the current time is greater than a fourth preset threshold, determining that the issued second load adjustment command is a load increase command, wherein the third preset threshold is less than the fourth preset threshold; If the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command, the alarm is activated; and the AGC is locked until the frequency modulation amount is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, at which point the AGC is reopened. The method further includes: The frequency modulation quantity and AGC frequency modulation quantity acquired each time, the time of each alarm issued, the time of controlling AGC to lock after each alarm, and the time of controlling AGC to restart after each alarm are recorded in the form of reports. In response to an assessment request sent by the assessment server, the report is sent to the assessment server, and the report is used to apply to the assessment server for exemption from assessment.

2. The method according to claim 1, characterized in that, The step of issuing a first load adjustment command based on the first frequency modulation amount includes: If the first frequency adjustment amount is greater than the first preset threshold, the first load adjustment command issued is determined to be a load increase command; If the first frequency adjustment amount is less than the second preset threshold, the first load adjustment command issued is determined to be a load reduction command, and the second preset threshold is less than the first preset threshold.

3. The method according to claim 1, characterized in that, The step of controlling the alarm to sound when the adjustment direction of the first load adjustment command is opposite to the adjustment direction of the second load adjustment command includes: When the first load adjustment command is an increase load command and the second load adjustment command is a decrease load command, or when the first load adjustment command is a decrease load command and the second load adjustment command is an increase load command, the alarm is controlled to sound an alarm.

4. The method according to claim 2, characterized in that, The first preset threshold is 2MW, and the second preset threshold is -2MW.

5. The method according to claim 1, characterized in that, The third preset threshold is -0.6MW, and the fourth preset threshold is 0.6MW.

6. An alarm device for a power grid frequency regulation control system, characterized in that, The power grid frequency regulation control system is used for frequency regulation control of thermal power units, and the device includes: The data acquisition module is used to acquire the same-source frequency modulation and AGC frequency modulation at the current time; The calculation module is used to obtain a first frequency modulation amount based on the difference between the AGC frequency modulation amount corresponding to the current time and the AGC frequency modulation amount obtained before the first preset time. The control module is configured to issue a first load adjustment command based on the first frequency modulation amount, issue a second load adjustment command based on the same-source frequency modulation amount corresponding to the current time, and control an alarm to sound when the adjustment direction of the first load adjustment command is opposite to that of the second load adjustment command, and control the AGC to lock until the same-source frequency modulation amount is greater than or equal to a third preset threshold and less than or equal to a fourth preset threshold, and then control the AGC to restart; record the same-source frequency modulation amount and AGC frequency modulation amount obtained each time, the time of each alarm, the time of controlling the AGC to lock after each alarm, and the time of controlling the AGC to restart after each alarm in the form of a report; and send the report to the assessment server in response to an assessment request sent by the assessment server, the report being used to apply to the assessment server for exemption from assessment; Specifically, issuing a second load adjustment command based on the frequency modulation amount corresponding to the current time includes: determining that the issued second load adjustment command is a load reduction command when the frequency modulation amount corresponding to the current time is less than a third preset threshold; and determining that the issued second load adjustment command is a load increase command when the frequency modulation amount corresponding to the current time is greater than a fourth preset threshold, wherein the third preset threshold is less than the fourth preset threshold.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method described in any one of claims 1-5.

8. An electronic device, characterized in that, include: A memory on which computer programs are stored; A processor for executing the computer program in the memory to implement the steps of the method according to any one of claims 1-5.

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