Hydraulic turbine set primary frequency modulation self-adaptive test device

Abstract

The embodiment of the utility model provides a hydraulic turbine set primary frequency modulation self-adaptive test device, which relates to the technical field of power system frequency modulation control and comprises a sensor module, a control module and a regulator module. The control module is respectively connected with the sensor module and the regulator module; wherein the sensor module is used for monitoring the operation state, the load change and the frequency modulation response characteristic of the hydraulic turbine set in real time; the control module receives the data monitored by the sensor module, analyzes and processes the data, and inputs a signal to the regulator module at the same time; and the regulator module is used for adaptively regulating the frequency modulation parameters of the hydraulic turbine set according to the output signal of the control module. According to the technical scheme of the utility model, the primary frequency modulation test of the hydraulic turbine set is realized through the control module and the regulator module, and the requirements of primary frequency modulation response, fast stabilization time and integral electric quantity assessment are met.

Description

Technical Field

[0001] The utility model relates to the technical field of power system frequency modulation control, and more specifically, to a primary frequency modulation adaptive test device for a water turbine unit. Background Art

[0002] Primary frequency modulation refers to the process of automatically adjusting the increase and decrease of the active power of the unit through the control system when the grid frequency deviates from the rated value, so as to dynamically control the change of the grid frequency. It is a continuous and stable adjustment process of the grid frequency. Its frequency modulation loop is usually composed of CCS (coordinated control system, unit coordinated control system) and DEH (digital electro-hydraulic control system, steam turbine digital electro-hydraulic control system).

[0003] In the related art, the primary frequency modulation test is mainly carried out by local electric power research institutes. During the test process, due to the dynamic changes of unit operating conditions, operating parameters, and operation experience, inaccurate prediction or improper operation may lead to test failure, and the test process also requires a long time. Due to the existence of the above uncertain factors, the safe and stable operation of the unit during the primary frequency modulation test is affected. Summary of the Utility Model

[0004] An embodiment of the utility model provides a primary frequency modulation adaptive test device for a water turbine unit to solve the problems of lack of fast response, safety, and stability in the prior art for the primary frequency modulation test of water turbines.

[0005] Other features and advantages of the utility model will become apparent through the following detailed description, or be learned in part through the practice of the utility model.

[0006] According to the first aspect of the embodiment of the utility model, a primary frequency modulation adaptive test device for a water turbine unit is provided, including: a sensor module, a control module, and a regulator module;

[0007] The control module is respectively connected to the sensor module and the regulator module;

[0008] Among them, the sensor module is used to monitor the operating state, load change, and frequency modulation response characteristics of the water turbine unit in real time;

[0009] The control module receives the data monitored by the sensor module, performs data analysis and processing, and inputs signals to the regulator module;

[0010] The regulator module adaptively adjusts the frequency modulation parameters of the water turbine unit according to the output signal of the control module.

[0011] In some embodiments of the present utility model, based on the foregoing solution, it further includes:

[0012] A data storage module, connected to the control module, for storing the data monitored by the sensor module, the parameters of the control module, and the adjustment results of the regulator module.

[0013] In some embodiments of the present utility model, based on the foregoing solution, the data storage module includes a database or a cloud storage system.

[0014] In some embodiments of the present utility model, based on the foregoing solution, the sensor module includes a displacement sensor, a pressure sensor, and a rotational speed sensor.

[0015] In some embodiments of the present utility model, based on the foregoing solution, the control module includes: a data acquisition card, a dynamic real-time calculation module, and a frequency generator;

[0016] The input port of the data acquisition card is connected to the sensor module;

[0017] The A / D conversion module of the data acquisition card is connected to the dynamic real-time calculation module;

[0018] The dynamic real-time calculation module is connected to the frequency generator;

[0019] The output port of the frequency generator is connected to the regulator module.

[0020] In some embodiments of the present utility model, based on the foregoing solution, the regulator module includes a programmable logic controller and an actuator.

[0021] In some embodiments of the present utility model, based on the foregoing solution, it further includes:

[0022] A logic interface, the logic interface includes a DEH interface and a CCS interface;

[0023] Wherein, the DEH interface is used to connect the DEH system and the control module, and the CCS interface is used to connect the CCS system and the control module.

[0024] The technical solution of the present utility model realizes the primary frequency regulation test of the hydro-generating unit through the provided control module and regulator module, meeting the requirements of primary frequency regulation response, fast stable time, and integral power consumption assessment.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. Description of the Drawings

[0026] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0027] Figure 1 It shows a schematic structural diagram of a primary frequency regulation adaptive test device for a hydro turbine unit according to an embodiment of the present utility model. Detailed implementation manners

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present utility model will be more complete and comprehensive, and the concept of the example embodiments will be fully conveyed to those skilled in the art.

[0029] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present utility model. However, those skilled in the art will realize that the technical solutions of the present utility model can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present utility model.

[0030] To make the purpose, technical solutions, and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0031] Some embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0032] To ensure the safe, stable, and high-quality operation of the power grid, improve the primary frequency regulation performance of the governor and the performance of participating in the frequency regulation auxiliary market regulation, avoid being penalized for primary frequency regulation actions, and increase the revenue from participating in the frequency regulation auxiliary market, the present utility model proposes a primary frequency regulation adaptive test device for a hydro turbine unit according to the requirements of the State Grid for the primary frequency regulation of generator sets.

[0033] See Figure 1 , which shows a schematic structural diagram of a primary frequency regulation adaptive test device for a water turbine unit according to an embodiment of the present invention.

[0034] As Figure 1 shown, a primary frequency regulation adaptive test device for a water turbine unit is presented, including:

[0035] a sensor module, a control module, and a regulator module;

[0036] The control module is respectively connected to the sensor module and the regulator module;

[0037] Among them, the sensor module is used to monitor the operating state, load change, and frequency regulation response characteristics of the water turbine unit in real time;

[0038] The control module receives the data monitored by the sensor module, conducts data analysis and processing, and simultaneously inputs signals to the regulator module;

[0039] The regulator module adaptively adjusts the frequency regulation parameters of the water turbine unit according to the output signal of the control module.

[0040] It should be noted that after receiving the monitoring data, the control module analyzes and processes the data to determine the frequency regulation performance and stability of the water turbine unit.

[0041] It should be noted that after analyzing and processing the monitoring data, the control module can output a control signal to the regulator module based on the analysis and processing results, and the regulator module adaptively adjusts the frequency regulation parameters of the water turbine unit according to the control signal to improve the frequency regulation performance and stability.

[0042] In some feasible embodiments, based on the foregoing solution, it further includes:

[0043] a data storage module, connected to the control module, for storing the data monitored by the sensor module, the parameters of the control module, and the adjustment results of the regulator module.

[0044] In some feasible embodiments, based on the foregoing solution, the data storage module includes a database or a cloud storage system.

[0045] In some feasible embodiments, based on the foregoing solution, the sensor module includes a displacement sensor, a pressure sensor, and a speed sensor.

[0046] Among them, the displacement sensor is used to measure the displacement data of the servomotor; the pressure sensor is used to measure the pressure of the hydraulic system of the water turbine unit; the speed sensor is used to measure the speed of the water turbine.

[0047] In some feasible embodiments, based on the foregoing solution, the control module includes: a data acquisition card, a dynamic real-time calculation module, and a frequency generator; wherein, the input port of the data acquisition card is connected to the sensor module for receiving the data output by the sensor; the A / D conversion module of the data acquisition card is connected to the dynamic real-time calculation module through a PCI bus, the dynamic real-time calculation module is connected to the frequency generator through a PCI bus, and the output port of the frequency generator is connected to the regulator module; the frequency generator includes a high-speed phase accumulator, a sine function register, a digital-to-analog conversion, and a low-pass filter, and the high-speed phase accumulator, the sine function register, the digital-to-analog conversion, and the low-pass filter are all connected through an interface in a serial input manner.

[0048] In this embodiment, the dynamic real-time calculation module calculates the frequency control word K of the high-speed phase accumulator and sends it to the high-speed phase accumulator. After the high-speed phase accumulator accumulates, it sends the phase value to the sine function register, calculates the corresponding signal value, and then outputs it through the analog-to-digital conversion and low-pass filter module. After amplification by an amplifier circuit, the corresponding required frequency signal is obtained to simulate the fluctuation of the power grid frequency; the frequency generator controls the regulator module according to the fluctuation of the simulated power grid frequency to realize the dynamic primary frequency regulation performance test of the hydropower unit.

[0049] Among them, the data acquisition card model is PCI-6010, the dynamic real-time calculation module is a PC portable computer, and the frequency generator model is PCI-5402.)

[0050] In some feasible embodiments, based on the foregoing solution, the regulator module includes a programmable logic controller and an actuator.

[0051] It should be noted that the programmable logic controller (PLC) is a digital operation and control electronic system specially designed for application in an industrial environment. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting, and arithmetic operations inside it, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

[0052] It should be noted that the actuator is an essential and important part of an automatic control system. Its function is to receive the control signal sent by the controller, change the size of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range.

[0053] In the embodiment of the present invention, the actuator executes the control signal of the programmable logic controller.

[0054] In some feasible embodiments, based on the foregoing solution, it further includes:

[0055] A logic interface, the logic interface including a DEH interface and a CCS interface;

[0056] Wherein, the DEH interface is used to connect the DEH system and the control module, and the CCS interface is used to connect the CCS system and the control module.

[0057] It should be noted that the DEH system refers to a steam turbine digital electro-hydraulic control system, and the CCS system refers to a unit coordinated control system.

[0058] After considering the specification and practicing the disclosed embodiments herein, those skilled in the art will readily conceive of other embodiments of the present invention. The present invention is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed by the present invention. It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. An adaptive test device for primary frequency regulation of a water turbine unit, characterized in that Comprising: A sensor module, a control module, and a regulator module; The control module is respectively connected to the sensor module and the regulator module; Wherein, the sensor module is used for real-time monitoring of the operating state, load change, and frequency modulation response characteristics of the water turbine unit; The control module receives the data monitored by the sensor module, conducts data analysis and processing, and simultaneously inputs a signal to the regulator module; The regulator module adaptively adjusts the frequency modulation parameters of the water turbine unit according to the output signal of the control module.

2. The device according to claim 1, characterized in that Also comprising: A data storage module, connected to the control module, for storing the data monitored by the sensor module, the parameters of the control module, and the adjustment results of the regulator module.

3. The device according to claim 2, characterized in that, The data storage module includes a database or a cloud storage system.

4. The device according to claim 1, characterized in that, The sensor module includes a displacement sensor, a pressure sensor, and a speed sensor.

5. The device according to claim 1, characterized in that, The control module includes: a data acquisition card, a dynamic real-time calculation module, and a frequency generator; The input port of the data acquisition card is connected to the sensor module; The A / D conversion module of the data acquisition card is connected to the dynamic real-time calculation module; The dynamic real-time calculation module is connected to the frequency generator; The output port of the frequency generator is connected to the regulator module.

6. The device according to claim 1, characterized in that, The regulator module includes a programmable logic controller and an actuator.

7. The device according to claim 1, characterized in that, Also comprising: A logic interface, the logic interface includes a DEH interface and a CCS interface; Wherein, the DEH interface is used for connecting the DEH system and the control module, and the CCS interface is used for connecting the CCS system and the control module.

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