Remote terminal frequency modulation and peak regulation adjustable load direct control type controller

Abstract

The utility model discloses a remote terminal frequency modulation and peak regulation adjustable load direct control type controller which comprises a processor, a wireless communication module, a positioning module, a display, a calculation encryption module and a transceiver. The processor comprises a standard input / output port, and a transformer substation and a feeder line are spliced into a user side power supply and distribution network; the metering encryption unit comprises an encryption module and a metering module; the encryption module is used for decrypting received data and encrypting sent data, and the metering module is used for calculating the electricity price of a power grid user; the wireless communication module is used for establishing connection with an electric power data platform; the transceiver comprises a corresponding interface and is used for establishing connection with a transformer substation; the processor is connected with the wireless communication module, the positioning module, the display and the calculation encryption module; and the calculation encryption module is connected with the transceiver. According to the utility model, more efficient and accurate remote control can be realized, and an adjustable load is promoted to provide auxiliary services such as frequency modulation and peak regulation for operation of an electric power system.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric load regulation, and in particular relates to a remote terminal frequency regulation and peak regulation adjustable load direct control type controller. Background Art

[0002] Adjustable loads include direct-controlled and non-direct-controlled types. Direct-controlled adjustable loads refer to adjustable loads that have direct control conditions of the power dispatching agency and have signed a grid-connected dispatching agreement with the power dispatching agency. They include direct-controlled power users and direct-controlled aggregation platforms (including aggregation in the form of load aggregators, virtual power plants, etc., and currently only allow aggregation of multiple power users within the jurisdiction of the same prefecture-level city);

[0003] However, at present, how to achieve more efficient and accurate remote control of adjustable loads such as traditional high-energy industrial loads, commercial interruptible loads, and electric vehicle charging pile loads, and how to promote adjustable loads to provide auxiliary services such as frequency regulation and peak regulation for power system operation, are still technical problems that need to be solved urgently. Summary of the invention

[0004] The main purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a remote terminal frequency and peak regulation adjustable load direct control controller, which can achieve more efficient and accurate remote control and promote the adjustable load to provide auxiliary services such as frequency regulation and peak regulation for the operation of the power system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, the utility model provides a remote terminal frequency and peak regulation adjustable load direct control controller method, including a processor, a wireless communication module, a positioning module, a display, a calculation encryption module and a transceiver; the processor includes a standard input and output port, and the substation plus feeder is spliced ​​to the user-end power supply and distribution network; the calculation encryption module includes an encryption module and a metering module; the encryption module is used to decrypt received data and encrypt sent data, and the metering module is used to calculate the electricity price for power grid users; the wireless communication module is used to establish a connection with the power data platform; the transceiver includes a corresponding interface for establishing a connection with the substation; the processor is connected to the wireless communication module, the positioning module, the display, and the calculation encryption module; the calculation encryption module is connected to the transceiver.

[0007] The standard input and output ports include 3CT / 3PT, RS232 and RS485, which are used to receive instructions to realize the control of the controller; the standard input and output ports are connected to the power grid equipment; the power grid equipment includes air switches, three-phase power lines, transformers, feeders and distribution network loads.

[0008] As a preferred technical solution, the wireless communication module includes 4G and 5G wireless communication modules and a LoRa wireless communication module.

[0009] As a preferred technical solution, the transceiver includes a 232 transceiver and a 485 transceiver, which are used to provide a connection channel between the calculation encryption module and the metering meter to calculate the electricity price for power grid users.

[0010] As a preferred technical solution, the transceiver includes a CAN transceiver.

[0011] As a preferred technical solution, the transceiver includes an Ethernet transceiver.

[0012] As a preferred technical solution, it is used to transmit the data of the substation to the power data platform; the communication board is connected to the processor through an interface.

[0013] As a preferred technical solution, the positioning chip of the positioning module adopts satellite positioning to provide the control center with controller location information so as to accurately locate the device.

[0014] As a preferred technical solution, the processor includes several ARM7 chip core boards, which are used to keep in touch with the control center, process and send data in real time, and complete real-time monitoring of the equipment.

[0015] As a preferred technical solution, the display is an LCD liquid crystal display.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The utility model discloses a remote terminal frequency regulation and peak regulation adjustable load direct control controller, which is connected to the user's power transformer and connected to the air switch of the substation through the standard input and output port (3CT / 3PT), and the substation plus feeder is spliced ​​to the user's power supply and distribution network, so as to realize more efficient and accurate remote control, and promote the adjustable load to provide auxiliary services such as frequency regulation and peak regulation for the operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of a remote terminal frequency and peak regulation load adjustable direct control controller according to an embodiment of the utility model;

[0020] Figure 2This is an application scenario diagram of the remote terminal frequency and peak regulation adjustable load direct control controller of the embodiment of the utility model;

[0021] Figure 3 A schematic diagram of a wireless access method according to an embodiment of the present utility model;

[0022] Figure 4 This is a structural example diagram of the source-grid-load-storage integrated control platform of the embodiment of the utility model;

[0023] Figure 5 This is a diagram showing the effect of load regulation in an embodiment of the utility model;

[0024] Figure 6 It is the overall structural diagram of the AGC automatic control of the hydropower plant power generation system according to the embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0026] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0027] See also Figure 1A remote terminal frequency modulation and peak modulation adjustable load direct control controller provided in this embodiment includes a processor 100, a 4G and 5G wireless communication module 101, a positioning module 102, a LoRa wireless communication module 103, a display 104, a calculation encryption module 105 and a transceiver 106; the processor 100 includes a standard input and output port, and the substation plus feeder is spliced ​​to the user-end power supply and distribution network; the calculation encryption module 105 includes an encryption module and a metering module; the encryption module is used to decrypt received data and encrypt sent data, and the metering module is used to calculate the electricity price of power grid users; the transceiver 106 includes a corresponding interface for establishing a connection with the substation; the processor 100 is connected to the 4G and 5G wireless communication module 101, the positioning module 102, the LoRa wireless communication module 103, the display 104, and the calculation encryption module 105; the calculation encryption module 105 is connected to the transceiver 106.

[0028] It should be noted that the 4G and 5G wireless communication modules 101 and the LoRa wireless communication module 103 each have a communication task. Among them, the signal of the remote adjustable load Beijing control center can be received through the 4G and 5G wireless communication modules 101, and the connection between the controller and the remote adjustable load Beijing control center is strengthened through the Lo Ra wireless communication module. In practical applications, the 4G and 5G modules may include several card slots for inserting several mobile phone cards, such as telecom cards.

[0029] In this embodiment, if Figure 3 As shown, the wireless access of the Beijing platform signal and the controller is achieved through the mobile network wireless APN access to achieve communication function.

[0030] In this embodiment, if Figure 4 As shown in the figure, the Beijing Control Center is an integrated control platform for power generation, grid, load and storage, which consists of two parts: 1. Auxiliary service market platform technical support system. 2. Power generation, grid, load and storage market-oriented operation support system.

[0031] Specifically, the above interface management functions belong to the Beijing Network Control Center platform. It includes the following modules: (1) Market member data interim report; (2) Market member fee settlement; (3) Market clearing expansion; (4) Load regulation demand release; (5) Market member contract management; (6) Load regulation status release; (7) Aggregator registration management; (8) Load statistical forecasting and monitoring; (9) Execution deviation assessment.

[0032] The market-oriented operation support system of source, grid, load and storage includes the following modules: (1) baseline load calculation; (2) data interaction interface; (3) visualization display; (4) load capacity analysis and evaluation function; and (5) load regulation function.

[0033] Beijing source-grid-load-storage integrated control platform has the following functions:

[0034] 1. Build a market-oriented operation support system for sources, grids, loads and storage to achieve aggregate management of various load resources and support them to participate in the ancillary service market.

[0035] 2. Conduct research on the mechanism for load-side resources to participate in market transactions.

[0036] 3. Based on the scenarios where adjustable loads participate in peak load regulation and standby of the power grid, value identification methods such as peak load regulation contribution rate and valley filling contribution rate for adjustable loads participating in the market are proposed.

[0037] More specifically, the Beijing remote platform realizes the direct control of adjustable loads through wireless network control terminal controllers, playing a direct automatic adjustment and control role (AGC for short). This remote control center includes the following platforms: 1. Provincial dispatching platform; 2. Municipal dispatching platform; 3. Virtual power plant aggregation platform; 4. Power sales platform. The controller transmits the control commands sent by the Beijing platform in encrypted transmission with the IEC104 / IEC101 / DL / T698 communication protocol. These commands include: direct switch control of the controller terminal, frequency adjustment control, power adjustment control, real-time parameter configuration, real-time parameter collection and other 1440 terminal signals. The platform signal links the controller through mobile network wireless access (APN for short). The module (telecom card 4G module) installed in the controller transmits radio signals, and performs data transmission between the Beijing control center and the controller to achieve the purpose of remote terminal control. The Beijing remote control center issues instructions to the controller to implement remote terminal control of adjustable loads. The transmission file is parsed with the IEC104 / IEC101 / DL / T698 communication protocol, and the controller is equipped with a telecommunications transmission encryption module (APN). The parameter transmission information has 1024 device terminals and 1440 real-time data. These device terminal parameters include: voltage, current, active power, reactive power, power factor, temperature 1, temperature 2, temperature 3, temperature 4, temperature 5, humidity 1, humidity 2, humidity 3, humidity 4, humidity 5. Each controller controls several terminal devices. These parameters include 1024 terminal devices. Each device is named with a terminal number. For example, one of the air switches in a substation is named with a control point and assigned a terminal number, and one motor inverter is assigned a terminal number.

[0038] The main function of the controller is to complete the regional frequency modulation of the power line network in the regional power grid. The platform uses the AGC controller to perform frequency modulation and peak modulation adjustable load control on the regional power grid equipment. The transmission data has 1440 points of real-time data, including: voltage, current, power, start, stop, temperature, humidity, charging status, start and stop percentage and other data. The decomposition algorithm steps of the direct control frequency modulation and peak modulation adjustable load (variable frequency unit) include: 1. Record the terminal number of the adjustment; 2. Adjustment time; 3. Adjustment amount; 4. Update the up / down value; 5. Start accumulating from the terminal that was not adjusted last time.

[0039] It should also be noted that, in this embodiment, the adjustable load remote terminal controller is connected to the user's power transformer, and the controller is connected to the grid load through the controller's standard input and output ports, namely 3CT / 3PT, connected to the substation air switch, and the substation plus feeder is spliced ​​to the user's power supply and distribution line. The controller's communication is transmitted to the Beijing Control Center via RS232 and RS485.

[0040] Furthermore, the calculation encryption module 105 includes an encryption module and a metering module; the encryption module is used to decrypt received data and encrypt sent data, and the metering module is used to calculate the electricity price for power grid users.

[0041] Furthermore, the transceiver 106 includes a 232 transceiver and a 485 transceiver, which are used to provide a connection channel between the calculation encryption module and the metering meter to calculate the electricity price for the power grid users.

[0042] Furthermore, the transceiver 106 includes a CAN transceiver.

[0043] Furthermore, the transceiver 106 includes an Ethernet transceiver.

[0044] Furthermore, this embodiment also includes a communication board 107 for transmitting data of the substation to the power data platform; the communication board is connected to the processor via an interface.

[0045] Furthermore, the processor 100 includes several ARM7 chip core boards, which are used to keep in touch with the control center, process and send data in real time, and complete real-time monitoring of the equipment.

[0046] The direct-controlled adjustable load remote terminal controller is remotely controlled by the Beijing adjustable load control center through the telecommunications communication board MCU wireless communication. The control object is the power generation enterprise, power sales enterprise, power user, energy storage enterprise or other market entities to invest in the construction of adjustable loads, and promote the adjustable load to provide auxiliary services such as frequency regulation and peak regulation for the operation of the power system. The controller is connected to the watt-hour meter, and the controller (ARM chip) controls the AGC frequency control output and its metering encryption.

[0047] Furthermore, the positioning chip of the positioning unit 102 uses satellite positioning to provide the control center with controller location information so as to accurately locate the device.

[0048] Furthermore, the display 104 is an LCD liquid crystal display, which displays operating status, data and curves.

[0049] In specific application scenarios, see Figure 2 The controller contains a four-way telecommunications communication board MCU wireless communication function, with four card slots for telecommunications cards 4G and 5G modules, an encryption module, and a positioning chip. This positioning chip can be used to locate the controller in the global positioning system (GPS) through satellites. The new generation of LoRa wireless module can transmit 3 kilometers of long-distance point-to-point wireless communication, with a transmission rate of 1200-115200bps, and the serial port communication frequency with other chips in the board reaches 433MHz, with a transmission power of 100mW, which strengthens the remote adjustable load. The Beijing Control Center implements remote terminal control of the controller. The communication board MCU2 is composed of an ARM7 chip, and the metering module is composed of 2 encryption chips, 2 general output ports (including 3CT / 3PT, RS232 and RS485) and other communication interfaces, and an LCD liquid crystal display.

[0050] The operation sequence of the entire control circuit board is described as follows: 1. The controller receives signals from the Beijing control center through 4 telecom card (4G, 5G) modules. 2. The LoRa wireless communication module can transmit 3 kilometers of long-distance point-to-point wireless communication, with a transmission rate of 1200-115200bps, and the serial communication frequency with other chips in the board reaches 433MHz, with a transmission power of 100mW, strengthening the remote adjustable load. The Beijing control center implements remote terminal control of the controller. 3. The encryption module has the functions of receiving data decryption and sending data encryption, and encrypts and decrypts the signals of the Beijing control center. 4. The positioning chip uses the satellite positioning system (GPS), which can locate the province and city where the controller is located through satellites, and provide the control center with the controller location information, so as to accurately locate the device. 5. The core board module processing board MCU2, which is composed of 2 ARM7 chips, maintains communication with the control center, processes and sends data in real time, calculates five formulas, completes real-time monitoring of equipment, and calculates electricity prices. 6. Two metering modules are composed of encryption chips, which are connected to the metering meter through RS232 or RS485 to calculate the electricity price for the grid users. 7. The LCD display shows the operating status, data and curves. 8. Standard input and output ports (3CT / 3PT), which can be connected to air switches, three-phase power lines, transformers, feeders, and distribution network loads.

[0051] in Figure 2The adjustable load remote terminal controller is connected to the user's power transformer. The controller is connected to the grid load through the controller's standard input and output port (3CT / 3PT) to the substation air switch, and the substation is spliced ​​with feeders to the user's power supply and distribution network. The substation in the figure has air switches, high-voltage transformers, primary and secondary relay protection circuits, feeder splicing distribution network lines, lightning protection and power boundary matching equipment. The controller's communication is transmitted to the Beijing Control Center via isolated analog RS232 and RS485.

[0052] The direct-controlled adjustable load controller is equipped with standard input and output ports (3CT / 3PT, RS232 and RS485). These input and output ports can implement the Beijing Control Center's instructions to control the remote terminal frequency and peak regulation adjustable load controller. Specifically, through the standard input and output ports (3CT / 3PT, RS232 and RS485), the controller transmits the electrical analog quantity, state quantity, upward / downward adjustment of power and electricity, upward / downward adjustment rate and other operating status information to the Beijing Electric Power Dispatching Center in real time. The Electric Power Dispatching Center can control the regulation capability of the direct-controlled adjustable load. The Beijing Control Center obtains operating information from the controller to switch the adjustable load. These switches include: air switches, three-phase power lines, transformers, feeders, and distribution network loads. These operating information are processed and the output controls the user's power load switch to calculate the electricity charge for the sold power load, and the output switch is included in the monthly settlement of the user's electricity charge. This diversified interaction of "source, grid, load, and storage" regulates the grid load and electric energy. The user's electricity meter is connected to the controller, and the user's power load is recorded and transmitted to the Beijing Control Center. During peak power consumption, the power load distributed by the user is sold to the power grid line, and the controller switch is directly switched on and off according to the load saved by the user to achieve the peak regulation (peak shaving) of the adjustable load. The user's fed-in power is used to calculate the electricity cost, and the assessment is conducted according to the standard of the maximum regulation capacity reported in the month × 2 hours.

[0053] The objects controlled by the controller include: relay protection, dispatching communication equipment, dispatching automation equipment, variable frequency motors, frequency modulation equipment, etc.

[0054] Based on its own conditions, the controlled object can participate in providing peak load regulation (peak shaving) auxiliary services by reducing the operating power during the peak load period of the system. The control method is to connect to the air switch, three-phase power line, transformer, feeder, and distribution network load through the standard input and output interface (3CT / 3PT, RS232 and RS485) of the controller. Take an air switch as an example to describe the access method. Before the high-voltage air switch of the substation is connected to the direct-controlled adjustable load controller, a three-party contract (the power supply bureau, the user, and the Beijing Control Center) needs to be signed. Then, at the input end of the user's power transformer, a "direct-controlled adjustable load remote terminal controller" is installed. During peak power consumption, the air switch at the input end of the user's transformer is disconnected, and the user's power load is fed back to the power grid to stabilize the power load of the power grid and ensure the stability of the power grid frequency, so as to avoid forced power outages due to local power grid overload. This way of selling electricity is called "source, network, load, and storage". The multi-faceted interactive play of power regulation capabilities, the watt-hour meter is connected to the "controller", and during peak power consumption, the power load distributed by the user is sold to the power grid line, and the power consumption of the direct-controlled peak-shaving (peak-shaving) adjustable load is fed to the user according to the load saved by the user.

[0055] For those who fail to implement the above-mentioned clauses and relevant requirements put forward by the power dispatching agency, each clause will be assessed according to the standard of the maximum regulation capacity declared in that month × 0.5 hours; if consequences are caused, each clause will be assessed according to the standard of the maximum regulation capacity declared in that month × 2 hours.

[0056] The technical conditions for directly controlled adjustable loads participating in peak load regulation (peak shaving) ancillary services include: during the peak load period of the system, the downward regulation capacity of the directly controlled adjustable load should not be less than 5 MW. The response time of the directly controlled aggregation platform to the planned regulation instruction should not exceed 1 minute.

[0057] Based on the system load peak period regulation capability reported by the directly controlled adjustable loads, the power dispatching agency will form a real-time planned regulation curve more than half an hour in advance according to the system operation requirements, and issue it after safety verification, directly calling on the directly controlled adjustable loads that meet the requirements of the above terms to participate in the peak regulation (peak shaving) service.

[0058] The peak-shaving (peak-shaving) auxiliary service regulation electricity of the directly controlled adjustable load is compensated according to 2×8×R5, where 8×R5 is the second-tier compensation standard for deep peak-shaving of the grid-connected entity on the power generation side.

[0059] According to the difference between the planned and actual active power, the peak load regulation (peak shaving) service fee C of the direct-controlled adjustable load is calculated based on a period of 15 minutes. The calculation formula is:

[0060]

[0061] Among them, represents the reference power, is the actual power, and the difference is the actual regulation capacity. If the actual regulation capacity is less than zero, it is treated as zero. m2 represents the peak clipping compensation intensity adjustment coefficient, and the value of m2 is 1.

[0062] The directly controlled AGC adjustable load can participate in providing primary frequency regulation services according to its own conditions. The performance indicators of participating in primary frequency regulation auxiliary services are as follows.

[0063] (1) The primary frequency modulation dead zone should be ±0.05Hz.

[0064] (2) The primary frequency modulation rate should be 5%.

[0065] (3) The start-up time (the time from receiving the control signal until the power change reaches 10% of the target control power for the first time) should not be greater than 3 seconds.

[0066] (4) The response time (the time from receiving the control signal until the power change reaches 90% of the target control power for the first time) should not be greater than 12 seconds.

[0067] (5) The adjustment time (the time from receiving the control signal until the power reaches the target control power and the power deviation is always controlled within ±2%) should not be greater than 30s.

[0068] (6) The active power regulation accuracy should not exceed ±2% of the adjustable load capacity.

[0069] (7) If the ratio of the actual integrated power of the primary frequency regulation of the direct-controlled adjustable load to the theoretical integrated power is greater than 70%, the action is considered qualified, otherwise it is unqualified.

[0070] Among them, the theoretical action integral power is calculated based on a 5% regulation rate.

[0071] The peak shaving (peak shaving) direct control type AGC frequency modulation command in the adjustable load control mode is that the transformer supplies power to the distribution network load through the air switch, and the distribution network load supplies the user. The user sends it to the three-phase watt-hour meter through the power sensor. The watt-hour meter reads the real-time power value and sends it to the RS485 / 232 interface of the controller. It is converted into digital information through the metering encryption chip. The information is sent to MCU2 through the AGC frequency modulation control output, and is transmitted to the Beijing remote adjustable load Beijing control center through the radio signal by the telecommunications card 4G module to implement remote terminal control of the controller. The Beijing remote adjustable load control center issues instructions to implement remote terminal control of the controller. The controller outputs the switch signal to implement the switch gate control of the relay protection circuit, and adjusts the distribution network load through the air switch, transformer, three-phase power line, and feeder. At the same time, the Beijing control center settles the electricity load metering electricity fee to the user, which is equivalent to buying and selling electricity load.

[0072] The process of receiving AGC calculation frequency modulation and sending control instructions to the terminal is as follows:

[0073] Decomposing adjustable capacity to the terminal. AGC instructions can be decomposed from the platform to the terminal, or directly received by the terminal and decomposed to the unit. The AGC instruction decomposition algorithm from the platform to the terminal equipment accumulates the adjustable up / down capacity value of the terminal and stops accumulating when the target adjustment amount is reached, thereby obtaining the terminal number and terminal quantity that need to be adjusted;

[0074] Receive real-time power from the terminal and calculate regulation accuracy;

[0075] Determine whether the preset end condition is met;

[0076] If the preset end condition is reached, the mileage is adjusted. If the preset end condition is not reached, it is further determined whether the preset accuracy is reached. If the preset accuracy is reached, the mileage is adjusted. If the preset accuracy is not reached, the real-time power is received from the terminal in a loop and the adjustment accuracy is calculated.

[0077] The algorithm for decomposing the peak-shaving (peak-cutting) direct-control AGC frequency regulation instructions between adjustable loads (variable frequency units) includes: recording the terminal number, adjustment time, and adjustment amount of the adjustment, updating the increase / decrease value, and accumulating from the last unadjusted terminal next time to calculate the adjusted power target value. Once it exceeds the accuracy range for the preset seconds, it is necessary to give the next terminal to be called an instruction to reverse the adjustment to maintain the adjustment accuracy.

[0078] Direct-controlled adjustable loads should transmit the operating status information such as electrical analog quantity, state quantity, upward / downward adjustment of power and electricity, upward / downward adjustment rate, etc. to the power dispatching agency in real time. The power dispatching agency can conduct a call test on the adjustment capacity of the direct-controlled adjustable load. If the call test fails, the assessment will be conducted each time according to the standard of the maximum adjustment capacity reported in the month × 2 hours.

[0079] The AGC instruction decomposes the algorithm from the terminal device to the compressor unit, by recording the state vector of the unit within one hour and sorting it from high to low according to the high-level operation time of the unit.

[0080] When adjusting downward, the real-time power of the units with the highest high-level operation duration is accumulated to close to the target adjustment value, and downward adjustment instructions are issued to these units.

[0081] When adjusting upward, the real-time power of the units with the shortest high-level operation time is accumulated to a value close to the target adjustment value, and upward adjustment instructions are issued to these units.

[0082] The units participating in the sorting must meet the preset values ​​of the minimum / maximum time the units are at a high level within 1 hour, otherwise they will not participate in the sorting and adjustment.

[0083] The Beijing Control and Dispatching Center instructs the adjustable load direct control controller to connect to the user's power or power plant line system through radio signals. The dispatching center stipulates that there are three types of signals connecting and communicating between them: the first type: operating mode signal, which includes four types of switch signals such as "AGC allowed", "AGC put into operation", load command "increase lock", and load command "decrease lock". The second type: load command signal, the dispatching center sends a digital signal to the controller, which is converted by the controller into a standard interface analog signal 4-20 mA corresponding to the rated output of the unit. The load command signal is sent to the coordinated control system of the controlled system. The third type: load limit and rate signal, this signal is set according to the status of the unit, mainly determined through experiments and set by the operating personnel. The lower and upper load limits correspond to 4-20 mA, and the load rate is also set by the user's power or power plant line system operator to 4-20 mA corresponding to 0-10 mw / min. It is converted into a digital quantity by the controller and sent to the control and dispatching center. The overall structure of the AGC automatic control of the power plant power generation system is as follows Figure 5 shown.

[0084] like Figure 6 As shown in the figure, when the grid is equipped with an energy storage system, the adjustable load in the grid is adjusted according to the regulated power, so that the peak power of the load is reduced. The display unit will present the two curves in the figure to the user, allowing the user to intuitively feel the degree of change caused by the load adjustment. The contribution is in the form of an assessment amount and notified to the user through the display unit. In this way, the user can know the effect of his or her adjustment decision, thereby improving the user experience.

[0085] It should be noted that, for the sake of convenience of description, the aforementioned method embodiments are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited to the described order of actions, because according to the present invention, certain steps can be performed in other orders or simultaneously.

Claims

1. Remote terminal frequency regulation and peak regulation adjustable load direct control controller, characterized by: It includes a processor, a wireless communication module, a positioning module, a display, a calculation encryption module and a transceiver; the processor includes a standard input and output port, and the substation plus the feeder is spliced ​​to the user-side power supply and distribution network; the calculation encryption module includes an encryption module and a metering module; the encryption module is used to decrypt received data and encrypt sent data, and the metering module is used to calculate the power price of power grid users; the wireless communication module is used to establish a connection with the power data platform; the transceiver includes a corresponding interface for establishing a connection with the substation; the processor is connected to the wireless communication module, the positioning module, the display, and the calculation encryption module; the calculation encryption module is connected to the transceiver; the standard input and output ports include 3CT / 3PT, RS232 and RS485, which are used to receive instructions to realize the control of the controller; the standard input and output ports are connected to the power grid equipment; the power grid equipment includes air switches, three-phase power lines, transformers, feeders and distribution network loads; The controller is connected to the substation air switch through the standard input and output ports, and the substation plus feeder is spliced ​​to the user-side power supply and distribution network; the controller receives remote terminal control instructions, and the controller outputs switch signals to implement switch control on the relay protection circuit, and adjusts the distribution network load through the air switch, transformer, three-phase power line, and feeder.

2. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The wireless communication module includes 4G and 5G wireless communication modules and a LoRa wireless communication module.

3. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The transceiver includes a 232 transceiver and a 485 transceiver, which are used to provide a connection channel between the calculation encryption module and the metering meter to calculate the electricity price of the power grid users.

4. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The transceiver comprises a CAN transceiver.

5. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The transceiver comprises an Ethernet transceiver.

6. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: It also includes a communication board for transmitting data from the substation to the power data platform; the communication board is connected to the processor through an interface.

7. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The positioning chip of the positioning module adopts satellite positioning to provide the control center with the controller position information so as to accurately locate the device.

8. According to claim 1, the remote terminal frequency and peak regulation adjustable load direct control controller is characterized in that: The processor includes several ARM7 chip core boards, which are used to keep in touch with the control center, process and send data in real time, and complete real-time monitoring of the equipment.

9. The remote terminal frequency and peak regulation load direct control controller according to claim 1 is characterized in that: The display is an LCD liquid crystal display.

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