Fast frequency response device based on primary frequency modulation technology
By using a limit plate and limit rod structure to organize and store wires, and combining it with the IPXM/IPXS device, the wires are neatly arranged and the frequency is quickly adjusted. This solves the problems of wire tangling and frequency adjustment lockout, and improves the aesthetics of the device and the stability of the power grid.
Patent Information
- Application Number
- CN202423268896.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing fast frequency response devices have wires that are easily tangled and messy, affecting aesthetics and making subsequent work difficult. Furthermore, they are difficult to achieve primary frequency regulation interlocking when the grid connection switch trips or the photovoltaic station fails.
The design incorporates limit plates and limit rods to organize the wires, and uses magnetic adsorption of limit slots and clips to achieve orderly wire storage. Additionally, external IPXM and IPXS power distribution coordination devices are connected to enable fast and accurate frequency modulation.
The neatly organized wiring improves the aesthetics and facilitates subsequent work. The recording box provides data support, and the device can quickly respond and complete a frequency adjustment when there is a frequency anomaly, ensuring the stability of the power grid.
Smart Images
Figure CN223872516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of quick frequency response, especially relates to a quick frequency response device based on primary frequency modulation technology. BACKGROUND
[0002] Quick frequency response refers to that power system can realize the regulation to load fluctuation in extremely short time, and new energy quick frequency response can quickly and accurately coordinate and control the active power output of photovoltaic power station inverter, realizes the frequency modulation function of photovoltaic power station, quick response frequency fluctuation, reduces the influence of frequency step disturbance in corresponding capacity range, realizes the coordination and unification of active power regulation, strives for the time of overall frequency balance of large power grid, and new energy quick frequency response device is usually configured with antenna, operation panel and several interfaces.
[0003] The prior art scheme has the following disadvantages:
[0004] Firstly, the existing quick frequency response device is provided with a plurality of groups of electric wires at the rear end, and the plurality of groups of electric wires are easily tangled, which not only affects the appearance but also makes the subsequent work difficult to proceed smoothly, so further improvement and optimization are needed in storage and arrangement.
[0005] Secondly, the existing quick frequency response device is difficult to realize the lockout of primary frequency modulation when the grid-connected switch is tripped, the photovoltaic station primary system fails, the voltage or frequency is abnormal, or the fault characteristic current is suddenly changed.
[0006] Therefore, it is necessary to design a quick frequency response device based on primary frequency modulation technology to solve the above problems. UTILITY MODEL CONTENT
[0007] The utility model aims at providing a quick frequency response device based on primary frequency modulation technology to solve the problem of tangled electric wires of the existing quick frequency response device.
[0008] To achieve the above object, the utility model provides the following technical scheme: a quick frequency response device based on primary frequency modulation technology, comprising a quick frequency response device body, a heat dissipation groove is formed above the quick frequency response device body, a limiting plate is fixed at the rear end of the quick frequency response device body, and a wire slot is formed in the inside of the limiting plate, which is provided with four groups, the electric wires are penetrated into the inside of the wire slot, a limiting frame is movably connected to the outside of the limiting plate, and a limiting rod is fixed to the inside of the limiting frame, which is provided with three groups, a limiting slot is formed on the outside of the limiting rod, which can limit the electric wires.
[0009] Preferably, the width of the limiting groove matches the width of the electric wire, and the limiting rods are arranged in equal intervals on the outside of the limiting groove.
[0010] Preferably, the inner side of the limiting frame is fixed with a clamping block, the outer side of the limiting plate is provided with a clamping groove in correspondence, and the clamping groove and the clamping block are connected by magnetic attraction.
[0011] Preferably, the front end of the quick frequency response device body is fixed with a recording box, the front end of the recording box is respectively fixed with a playing area and an operation area, the upper side of the recording box is fixed with a single-chip microcomputer, the output end of the operation area is electrically connected with the input end of the single-chip microcomputer through wires, and the output end of the single-chip microcomputer is electrically connected with the input end of the playing area through wires.
[0012] Preferably, the quick frequency response device body is externally connected with an IPXM power distribution coordination device and an IPXS power distribution coordination device to quickly and accurately complete the primary frequency modulation function of a new energy station.
[0013] Compared with the prior art, the utility model has the advantages of:
[0014] (1) The limiting plate can be installed to preliminarily limit the electric wire at the rear end of the quick frequency response device body, at this time, a plurality of electric wires are wound around the limiting rods for storage, and the limiting grooves limit the wound electric wires, so that the quick frequency response device body is not only more beautiful but also facilitates the subsequent work to be smoothly carried out. The recording box can be installed to record and play the function, complete the recording and playing data, facilitate the staff to further analyze and optimize the quick frequency response device body, ensure the safety and stability of the power grid, provide data support and facts prove that the quick frequency response device body supports three modes of recording and playing, recording and playing in the automatic test mode, transient recording and playing, normal recording and playing, and all the recording and playing reports can be conveniently exported to form an EXECL table document.
[0015] (2) The externally connected IPXM power distribution coordination device has powerful logical calculation function and multiple redundant communication ports, receives the power adjustment value issued by the IPD quick frequency response device, simultaneously collects the operation state of each interval small room inverter, simultaneously completes the first round of coarse adjustment and subsequent multiple rounds of fine adjustment according to the distribution strategy of the planned active power and the adjustment process, is the command center in the whole primary frequency modulation process, directly controls the inverter through the externally connected IPXS power distribution coordination device, receives the AGC and IPXM control instructions, simultaneously collects the state of the controlled inverter and uploads it to the AGC and IPXM. When the frequency is normal, only the AGC active control instruction is forwarded to the inverter. When the frequency is abnormal, the AGC planned value is immediately stopped, the IPXM power distribution coordination device power adjustment value is quickly forwarded to the inverter to complete the primary frequency modulation function. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of this utility model;
[0019] Figure 3 This is a frontal three-dimensional structural diagram of the limiting frame of this utility model;
[0020] Figure 4 This is a rear view three-dimensional structural diagram of the limiting frame of this utility model;
[0021] Figure 5 This is a schematic diagram of the circuit structure of this utility model.
[0022] The following are the labels in the attached figures: 1. Fast frequency response device body; 2. Heat dissipation groove; 3. Limiting plate; 4. Cable groove; 5. Limiting frame; 6. Limiting rod; 7. Limiting groove; 8. Locking block; 9. Recording box; 10. Playback area; 11. Operation area; 12. Microcontroller. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Example 1
[0025] To address the issue of tangled and messy wiring in existing fast frequency response devices, the following solution is disclosed, as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown:
[0026] A fast frequency response device based on single-frequency modulation technology includes a fast frequency response device body 1, a heat dissipation groove 2 on the top of the fast frequency response device body 1, a limit plate 3 fixed at the rear end of the fast frequency response device body 1, and a wire groove 4 with four sets inside the limit plate 3, through which the wire passes. A limit frame 5 is movably connected to the outside of the limit plate 3, and a limit rod 6 with three sets fixed inside the limit frame 5. A limit groove 7 is opened on the outside of the limit rod 6, which can limit the wire.
[0027] The width of the limiting groove 7 matches the width of the wire, and it is distributed in an equally spaced coiled shape on the outside of the limiting rod 6;
[0028] A locking block 8 is fixed on the inner side of the limiting frame 5, and a corresponding locking groove is opened on the outer side of the limiting plate 3. The locking groove and the locking block 8 are connected by magnetic attraction.
[0029] A recording box 9 is fixed at the front end of the fast frequency response device body 1, and a playback area 10 and an operation area 11 are fixed at the front end of the recording box 9. A microcontroller 12 is fixed above the recording box 9. The output terminal of the operation area 11 is electrically connected to the input terminal of the microcontroller 12 through a wire, and the output terminal of the microcontroller 12 is electrically connected to the input terminal of the playback area 10 through a wire.
[0030] In this embodiment, when the wire is not in use, the wire can be wrapped around the outside of the limiting rod 6 with the cooperation of the limiting rod 6 and the limiting groove 7, which has a limiting effect. The wire can be stored and organized by the mutual engagement and adsorption of the locking block 8 and the locking groove, preventing it from becoming messy and tangled, which not only affects its appearance but also makes subsequent processing difficult. By pressing the operation area 11, the signal is transmitted to the microcontroller 12. The microcontroller 12 receives the information, processes it, and transmits it to the playback area 10 for playback. The recording and playback structure facilitates the staff to further analyze and optimize the performance of the primary frequency regulation of the new energy, and to further develop the primary frequency regulation function of the new energy station.
[0031] Example 2
[0032] This embodiment differs from Embodiment 1 in that it can achieve primary frequency modulation by matching with an external device, specifically as follows: Figure 1 and Figure 5 As shown:
[0033] The fast frequency response device body 1 is externally connected to the IPX700M power distribution coordination device and the IPX700S power distribution coordination device to quickly and accurately complete the primary frequency regulation function of the new energy power station.
[0034] In this embodiment, the IPX700M and IPX700S power distribution coordination devices are control devices developed specifically for photovoltaic fields with long communication link delays that prevent the achievement of primary frequency regulation time targets. When a frequency anomaly occurs, the AGC is bypassed, and the IPX700M and IPX700S directly control the inverter to quickly complete power regulation, as shown in the following figure:
[0035]
[0036] The IPX700M power distribution coordination device possesses powerful logic calculation capabilities and multiple redundant communication ports. It receives power adjustment values from the IPD700 fast frequency response device, simultaneously collects the operating status of each bay's inverter, and performs planned active power allocation strategies, including the first round of coarse adjustments and subsequent rounds of fine adjustments. It serves as the command center for our entire primary frequency regulation process.
[0037] The IPX700S power distribution coordination device directly controls the inverter, receiving control commands from AGC and IPX700M. Simultaneously, it collects the status of the controlled inverter and sends it to AGC and IPX700M. When the frequency is normal, it only forwards AGC active power control commands to the inverter. However, when the frequency is abnormal, it immediately stops executing the AGC planned values and quickly forwards the power adjustment values from the IPX700M power distribution coordination device to the inverter, thus completing a primary frequency regulation function.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fast frequency response device based on single-frequency modulation technology, comprising a fast frequency response device body (1), characterized in that: A heat dissipation groove (2) is provided on the top of the fast frequency response device body (1). A limiting plate (3) is fixed at the rear end of the fast frequency response device body (1), and a wire groove (4) is provided inside the limiting plate (3). There are four sets of wire grooves. The wire passes through the inside of the wire groove (4). A limiting frame (5) is movably connected to the outside of the limiting plate (3), and a limiting rod (6) is fixed on the inside of the limiting frame (5). There are three sets of limiting rods (6). A limiting groove (7) is provided on the outside of the limiting rod (6), which can limit the wire.
2. The fast frequency response device based on single-frequency modulation technology according to claim 1, characterized in that: The width of the limiting groove (7) matches the width of the wire, and it is distributed in an equally spaced coiled shape on the outside of the limiting rod (6).
3. The fast frequency response device based on single-frequency modulation technology according to claim 1, characterized in that: The inner side of the limiting frame (5) is fixed with a card block (8), and the outer side of the limiting plate (3) is provided with a corresponding card slot, and the card slot and the card block (8) are connected by magnetic attraction.
4. The fast frequency response device based on single-frequency modulation technology according to claim 1, characterized in that: A recording box (9) is fixed at the front end of the fast frequency response device body (1), and a playback area (10) and an operation area (11) are fixed at the front end of the recording box (9). A microcontroller (12) is fixed above the recording box (9). The output end of the operation area (11) is electrically connected to the input end of the microcontroller (12) through a wire, and the output end of the microcontroller (12) is electrically connected to the input end of the playback area (10) through a wire.
5. A fast frequency response device based on single-frequency modulation technology according to claim 1, characterized in that: The fast frequency response device body (1) is externally connected to an IPX700M power distribution coordination device and an IPX700S power distribution coordination device to quickly and accurately complete the primary frequency regulation function of the new energy power station.