CN-121993939-A - Photovoltaic heat pump device capable of adjusting stability and adjusting system

CN121993939ACN 121993939 ACN121993939 ACN 121993939ACN-121993939-A

Abstract

The invention discloses a regulating system and a regulating device of a photovoltaic heat pump, and relates to the technical field of heat pump control. The adjusting system comprises a data acquisition module, a data processing module, a control instruction generation module, an execution driving module and a data recording module. The data processing module establishes a unified reference, calibrates the sensor, calculates temperature deviation and pressure estimation based on acquired data, obtains an adjusting coefficient by weighting and summing, generates a control instruction containing an adjusting direction and a step length by the control instruction generating module when the adjusting coefficient continuously exceeds a threshold value and reaches the shortest residence time, executes the adjustment of the actuating mechanism by the driving module, and resets and records the data by the data recording module. The device comprises a heat pump main body and a control box integrating the regulating system. The invention solves the problem of inconsistent interpretation under different installation postures through the unified standard, ensures stable adjustment by a threshold value residence mechanism, realizes traceability of latching and recording, and improves the adaptability and reliability of the system under variable working conditions.

Inventors

CHEN ZHIPENG
CAO SHIPENG
Zheng Shouchen
GAO WENJIE

Assignees

国网江苏省电力有限公司灌南县供电分公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. A photovoltaic heat pump regulation system for regulating stability, comprising: the data acquisition module is used for periodically acquiring data from the temperature sensor and the pressure sensor; The data processing module is connected with the data acquisition module and is configured to establish uniform geometric and coordinate references, calibrate the empty load and the load of the sensor, preset a threshold value and the shortest residence time, calculate temperature deviation and pressure estimation based on the data, calculate an adjustment coefficient according to the weighted summation of the temperature deviation and the pressure estimation, and compare the adjustment coefficient with the preset threshold value; the control instruction generation module is connected with the data processing module and is configured to generate a control instruction comprising an adjustment direction and a step length when the adjustment coefficient continuously exceeds the preset threshold value and reaches a preset shortest residence time length; the execution driving module is connected with the control instruction generation module and used for controlling an execution mechanism of the heat pump to adjust according to the control instruction; and the data recording module is used for executing a reset process after the adjustment is completed and recording the related data of the event to the nonvolatile memory.
2. The photovoltaic heat pump regulating system according to claim 1, wherein the data acquisition module is further connected to an illumination sensor for acquiring illumination intensity data of the photovoltaic array surface, the temperature sensor is disposed at an evaporator inlet, a condenser outlet and an environment side of the heat pump unit, and the pressure sensor is disposed at an air suction and exhaust side of the compressor.
3. The photovoltaic heat pump regulation system of claim 1, wherein the data processing module is configured to obtain the readings of each triggered temperature sensor and calculate the average value thereof when calculating the temperature deviation, calculate the average value of the readings of the temperature sensor corresponding to the preset preferred temperature zone, and the temperature deviation is the difference between the two average values.
4. The photovoltaic heat pump regulation system of claim 3, wherein the preferable temperature zone is set in such a manner that the operating temperature range of the heat pump unit is divided into a low temperature zone, a middle zone and a high temperature zone, and the middle zone is set as the preferable temperature zone.
5. The photovoltaic heat pump regulating system for regulating stability according to claim 1, wherein the control instruction generating module is configured to generate the control instruction comprising a regulating direction and a step length, and specifically comprises the steps of continuously monitoring the regulating coefficient, confirming that the control instruction needs to be generated only when the regulating coefficient continuously exceeds the preset threshold value and reaches the preset shortest residence time, judging that the regulating direction is judged according to the area where the reading of the temperature sensor is positioned, prompting to increase the frequency of the compressor or open a valve if the regulating direction is in a low-temperature area, prompting to decrease the frequency or close the valve if the regulating direction is in a high-temperature area, and prompting to perform tightness fine-tuning preferentially if the regulating direction is in an intermediate area.
6. The photovoltaic heat pump regulation system of claim 5 wherein the step size is a discrete integer value whose magnitude is determined jointly from the supra-threshold amplitude and the normalized tightness index of the pressure estimate and an upper constraint is imposed on the value.
7. The photovoltaic heat pump regulating system of claim 5, wherein after the control command is sent, the system enters a latch state, and no new control command is repeatedly generated in the latch state until the operation execution result is received or the safe cleaning duration is reached.
8. The photovoltaic heat pump regulation system of claim 6 wherein the threshold amplitude is an amplitude at which the regulation factor exceeds a preset threshold, and the pressure estimate is normalized to obtain a tightness index.
9. The photovoltaic heat pump regulation system of claim 1, wherein the data recording module is further configured to clear the threshold count in the reset process, restore the default prompt suppression state, and release the time latch of the current event at the end of the safe clear period, wherein the recorded related data includes the prompt direction, the step size, the temperature deviation and the pressure estimation before and after the regulation.
10. A photovoltaic heat pump device comprises a heat pump main body and a control box, and is characterized in that the control box is integrated with the adjusting system according to any one of claims 1-9 and is provided with an interface connection sensor and an executing mechanism.

Description

Photovoltaic heat pump device capable of adjusting stability and adjusting system Technical Field The invention relates to the technical field of heat pump control, in particular to a photovoltaic heat pump device capable of regulating stability and a regulating system. Background The photovoltaic heat pump system combines photovoltaic power generation and heat pump technology, is used for heating, refrigerating or providing hot water, and has wide application in building energy conservation and renewable energy utilization. Existing photovoltaic heat pump systems typically adjust operating parameters such as compressor frequency, valve opening, etc. by simple feedback control to account for environmental changes and load fluctuations. However, the system has the following problems that firstly, the sensor data lack of uniform calibration and reference, which causes inconsistent control interpretation caliber under different installation postures to influence the adjustment precision, secondly, the control strategy is mostly based on instantaneous values, is easy to trigger misoperation due to disturbance, has poor stability, and thirdly, lacks a systematic event recording and tracing mechanism, which is unfavorable for post analysis and parameter optimization. Especially in the scene of light fluctuation and large temperature change, the system is frequently regulated, the efficiency is low, and even equipment wear or failure is caused. Therefore, a photovoltaic heat pump system and a device capable of establishing a unified reference, suppressing disturbance misjudgment, realizing stable adjustment and traceable recording are needed. Disclosure of Invention Based on the technical problems in the prior art, the invention provides a photovoltaic heat pump device and a regulating system for regulating stability. The invention provides a photovoltaic heat pump regulating system capable of regulating stability, which comprises a data acquisition module, a data processing module, a control instruction generating module, an execution driving module and a data recording module. The system comprises a data acquisition module, a data processing module, a control instruction generation module, an execution driving module and a data recording module, wherein the data acquisition module is used for periodically acquiring data from a temperature sensor and a pressure sensor, the data processing module is connected with the data acquisition module and is configured to establish unified geometric and coordinate references, carry out no-load and load calibration on the sensor, preset thresholds and shortest residence time, calculate temperature deviation and pressure estimation based on acquired data, calculate an adjustment coefficient according to the temperature deviation and the pressure estimation, weight and sum the adjustment coefficient and compare the adjustment coefficient with the preset thresholds, the control instruction generation module is connected with the data processing module and is configured to generate a control instruction comprising an adjustment direction and a step length when the adjustment coefficient continuously exceeds the preset thresholds and reaches the preset shortest residence time, the execution driving module is connected with the control instruction generation module and is used for controlling an execution mechanism of a heat pump to carry out adjustment according to the control instruction, and the data recording module is used for executing a reset flow after adjustment is completed and recording relevant data of the event to a nonvolatile memory. The system solves the problems of inconsistent control caliber and false triggering by unifying the standard and the stable standard. The data acquisition module is preferably further connected with an illumination sensor for acquiring illumination intensity data of the surface of the photovoltaic array, the temperature sensor is arranged at an evaporator inlet, a condenser outlet and an environment side of the heat pump unit, the pressure sensor is arranged at an air suction and exhaust side of the compressor, the sensor configuration and arrangement positions of the data acquisition module are thinned, illumination intensity acquisition dimensions are supplemented, key monitoring points of the temperature and pressure sensor are clear, comprehensiveness and pertinence of data acquisition are improved, and a reliable data source is provided for follow-up accurate calculation of an adjustment coefficient. Preferably, the data processing module is configured to obtain readings of each temperature sensor and calculate an average value thereof when calculating the temperature deviation, calculate an average value of the readings of the temperature sensors corresponding to a preset preferred temperature region, and the temperature deviation is a difference value between the two average values, wherein the preferred scheme defines a specific