1. A method for regulating and controlling the temperature of a heating medium of a heating station is characterized by comprising the following steps,

s1, periodically evaluating whether heat medium regulation is needed, wherein the evaluation method is to evaluate whether the regulation condition is met or not based on the difference value of the outdoor temperature average values of two adjacent evaluation periods and the difference value of the target room temperature and the actual room temperature, and if the regulation condition is met, the heat medium temperature regulation is needed;

s2, when the adjustment condition is met, the heating station starts to adjust the temperature of the heating medium, and the first adjustment is carried out according to a certain adjustment range;

s3, after a certain time interval T', determining whether a second adjustment is needed, the determining method includes: within the evaluation period T', the average difference absolute value between the actual room temperature and the target room temperature is | delta T₂The absolute value of the average difference between the actual room temperature and the target room temperature in the T' time at the last stage of the last evaluation period is | delta T₁The following judgments are made:

(1) if | Δ t₂|≤|Δt₁No second adjustment;

(2) if | Δ t₂|>|Δt₁Adjusting for the second time;

and S4, when the second adjustment is needed, adjusting the temperature of the heating medium for the second time according to a certain range, wherein the range of the second adjustment is smaller than that of the first adjustment.

2. The method for regulating and controlling the temperature of a heating medium of a thermal station according to claim 1, wherein: the adjustment conditions in step S1 are: a, the average value of the outdoor temperature measured values of the last evaluation period and the average value of the outdoor temperature predicted values of the next evaluation period are obtained, and the difference value of the two average values is not in a preset range; b, the difference of the set target room temperature and the actual room temperature exceeds +/-1 ℃; if any one of a and b is satisfied, the adjustment condition is satisfied.

3. The method for regulating and controlling the temperature of the heating medium of the thermal station as claimed in claim 2, wherein: setting different parameters according to different building energy consumptions of the building, wherein the building energy consumption is divided into 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And five building energy consumption levels of 45W and above.

4. Root of herbaceous plantThe method for controlling temperature of heating medium in heating power station as claimed in claim 3, wherein: for the evaluation period in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the evaluation periods of the buildings with the energy consumption levels of 45W and above are respectively as follows: 6h, 4h and 4 h.

5. The method for regulating and controlling the temperature of the heating medium of the thermal station as claimed in claim 3, wherein: for the preset range of the difference between the two average values in the adjustment condition a in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the preset ranges of the difference values of the two average values of the buildings with the energy consumption levels of 45W and above are +/-3 degrees, +/-2.5 degrees, +/-2 degrees and +/-2 degrees respectively.

6. The method for regulating and controlling the temperature of the heating medium of the thermal station as claimed in claim 3, wherein: for the adjustment amplitude in step S2, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the adjustment ranges of the buildings with the energy consumption levels of 45W and above are +/-1 degree, +/-1.2 degrees, +/-1.5 degrees, +/-2 degrees and +/-3 degrees respectively.

7. The method for regulating and controlling the temperature of the heating medium of the thermal station as claimed in claim 3, wherein: for the time interval T', 25-30W/m in step S3²、30-35W/m²、35-40W/m²、40-45W/m²And the time intervals T' of the buildings with the energy consumption levels of 45W and above are respectively 3h, 2.5h, 2h and 1 h.

8. The method for regulating and controlling the temperature of the heating medium of the thermal station as claimed in claim 3, wherein: for the amplitude of the second adjustment in step S4, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the second adjustment amplitude of the buildings with the energy consumption levels of 45W and above is +/-0.5 degrees, +/-1 degrees and +/-II degrees respectively1 degree and ± 1 degree.

9. The method for regulating and controlling the temperature of a heating medium of a thermal station according to claim 1, wherein: the heat medium is used for supplying water for the second time,

during the first adjustment and the second adjustment, the adjustment is realized by adjusting the secondary water supply temperature up or down, and if the current actual room temperature is higher than the target room temperature, the secondary water supply temperature is adjusted down; and if the actual room temperature is lower than the target room temperature, the temperature of the secondary water supply is adjusted upwards.

Background

The heating station is divided into a direct supply station and an intermediate supply station according to the heat supply form, the direct supply station is directly supplied to users by a power plant, the temperature is high, the control is difficult, and the heat energy is wasted. Is a product of the waste heat welfare heat supply of the initial power plant. Later on, the charging was started, and there were thermal companies. With the economic development and the commercialization of heat, heat companies begin to improve the quality of heat supply, and have direct supply stations, which belong to centralized heat supply. And the boiler supplies heat, so that the link of a power plant is saved, but the efficiency is low, and the pollution is large and is eliminated nearly. The central heating is the development direction, and is mainly for intermediate supply stations.

In the whole network regulation process, the regulation of each heat exchange station influences each other and further influences the heat source. And the reaction speeds of different heat source forms influencing the heat exchange stations after regulation are different, so when the whole network is regulated and controlled, in order to ensure the safe and energy-saving operation of the whole network, the heat source form and the operation characteristics of a pipe network need to be researched, and the linkage regulation and control of the heat source and the heat exchange station system are adopted, so that a heat medium regulation and control method of the heating station capable of supplying heat and supplying heat accurately as required needs to be developed.

Disclosure of Invention

The invention aims to provide a heating medium temperature regulation and control method for a heating station, which meets the requirements of comfort and stability of heating of a heat user and realizes energy conservation and consumption reduction.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

which comprises the following steps of,

s1, periodically evaluating whether heat medium regulation is needed, wherein the evaluation method is to evaluate whether the regulation condition is met or not based on the difference value of the outdoor temperature average values of two adjacent evaluation periods and the difference value of the target room temperature and the actual room temperature, and if the regulation condition is met, the heat medium temperature regulation is needed;

s2, when the adjustment condition is met, the heating station starts to adjust the temperature of the heating medium, and the first adjustment is carried out according to a certain adjustment range;

s3, after a certain time interval T', determining whether a second adjustment is needed, the determining method includes: within the evaluation period T', the average difference absolute value between the actual room temperature and the target room temperature is | delta T₂The absolute value of the average difference between the actual room temperature and the target room temperature in the T' time at the last stage of the last evaluation period is | delta T₁The following judgments are made: (3) if | Δ t₂|≤|Δt₁And | no second adjustment is made.

(4) If | Δ t₂|>|Δt₁Adjusting for the second time;

and S4, when the second adjustment is needed, adjusting the temperature of the heating medium for the second time according to a certain range, wherein the range of the second adjustment is smaller than that of the first adjustment.

Further, the adjustment conditions in step S1 are: a, the average value of the outdoor temperature measured values of the last evaluation period and the average value of the outdoor temperature predicted values of the next evaluation period are obtained, and the difference value of the two average values is not in a preset range; b, the difference of the set target room temperature and the actual room temperature exceeds +/-1 ℃; if any one of a and b is satisfied, the adjustment condition is satisfied.

Furthermore, different parameters are set according to different building energy consumptions of the building, and the building energy consumption is divided into 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And five building energy consumption levels of 45W and above.

Further, for the evaluation period in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the evaluation periods of the buildings with the energy consumption levels of 45W and above are respectively as follows: 6h, 4h and 4 h.

Further, for the preset range of the difference between the two average values in the adjustment condition a in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the preset ranges of the difference values of the two average values of the buildings with the energy consumption levels of 45W and above are +/-3 degrees, +/-2.5 degrees, +/-2 degrees and +/-2 degrees respectively.

Further, for the adjustment amplitude in step S2, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the adjustment ranges of the buildings with the energy consumption levels of 45W and above are +/-1 degree, +/-1.2 degrees, +/-1.5 degrees, +/-2 degrees and +/-3 degrees respectively.

Further, for the time interval T' in step S3, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the time intervals T' of the buildings with the energy consumption levels of 45W and above are respectively 3h, 2.5h, 2h and 1 h.

Further, for the second adjustment in step S4, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the second adjustment amplitude of the buildings with the energy consumption levels of 45W and above is +/-0.5 degrees, +/-1 degrees and +/-II degrees respectively1 degree and ± 1 degree.

Further, the heating medium is secondary water supply, during the first adjustment and the second adjustment, the adjustment is realized by adjusting the temperature of the secondary water supply up or down, and if the current actual room temperature is higher than the target room temperature, the temperature of the secondary water supply is adjusted down; and if the actual room temperature is lower than the target room temperature, the temperature of the secondary water supply is adjusted upwards.

Compared with the prior art, the invention has the following beneficial effects:

the invention combines the rough adjustment of the first adjustment with the fine adjustment of the second adjustment through the periodic judgment and regulation, thereby not only meeting the requirement of heat supply and adjusting the temperature of the heat medium in time according to the supply and demand relationship to meet the requirement of a user using heat, ensuring the heat supply temperature, but also saving energy. The regulation and control method can also ensure that the heating system can stably run, and avoids the heating system from generating fluctuation through scientific setting of parameters.

Detailed Description

The present invention will be described in further detail below with reference to examples.

The invention relates to a heating medium temperature regulation and control method of a heating station, and building energy consumption can be obtained by the means of the prior art. Setting different parameters according to different building energy consumptions corresponding to the buildings where heat supply users are located, wherein the building energy consumption is divided into 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And five building energy consumption levels of 45W and above. When the method for regulating and controlling the energy consumption of each building is implemented, different parameters are set for the buildings with the energy consumption grades.

The method comprises the following steps of,

and S1, periodically evaluating whether heat medium regulation is needed, wherein the evaluation method is to evaluate whether an adjustment condition is met or not based on two difference values, the adjustment condition is needed heat medium temperature regulation, the two difference values are the difference value of the average outdoor temperatures of two adjacent evaluation periods, and the second difference value is the difference value of the target room temperature and the actual room temperature.

Specifically, the method comprises the following steps: because of the periodic evaluation, there is an evaluation period, separated by one evaluation weekAfter that, the evaluation and adjustment are performed once, and for the evaluation period in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the evaluation periods of the buildings with the energy consumption levels of 45W and above are respectively as follows: 6h, 4h and 4 h. The building energy consumption is 25-30W/m²For the purpose of explanation, the evaluation and adjustment were performed every 6 h.

The adjustment conditions in step S1 are: a, the average value of the outdoor temperature measured values of the last evaluation period and the average value of the outdoor temperature predicted values of the next evaluation period are obtained, and the difference value of the two average values is not in a preset range; b, the difference of the set target room temperature and the actual room temperature exceeds +/-1 ℃; if any one of a and b is satisfied, the adjustment condition is satisfied.

Since the outdoor temperature of the last evaluation period is the occurred time, the next evaluation period is an event that has not occurred using the measured value, and the outdoor temperature prediction value of the next evaluation period can be obtained by weather forecast using the prediction value.

For the preset range of the difference between the two average values in the adjustment condition a in step S1, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the preset ranges of the difference values of the two average values of the buildings with the energy consumption levels of 45W and above are +/-3 degrees, +/-2.5 degrees, +/-2 degrees and +/-2 degrees respectively. The building energy consumption is 25-30W/m²For explanation, when the adjustment conditions in step S1 are: the difference value between the average value of the outdoor temperature measured values of the last evaluation period and the average value of the outdoor temperature predicted values of the next evaluation period is not within the range of +/-3 degrees; b, the difference of the set target room temperature and the actual room temperature exceeds +/-1 ℃; if any one of a and b is satisfied, the adjustment condition is satisfied.

S2, when the adjustment condition is met, the heating station starts to adjust the temperature of the heating medium, and the first adjustment is carried out according to a certain adjustment range; the first adjustment is to adjust the temperature of the heating medium up or down. For the adjustment amplitude in step S2, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And 45W and more than five building energiesThe adjustment range of the consumption-level building is +/-1 degree, + -1.2 degree, + -1.5 degree, + -2 degree and +/-3 degree respectively. S3, after a certain time interval T', determining whether a second adjustment is needed, the determining method includes: within the evaluation period T', the average difference absolute value between the actual room temperature and the target room temperature is | delta T₂The absolute value of the average difference between the actual room temperature and the target room temperature in the T' time at the last stage of the last evaluation period is | delta T₁The following judgments are made:

(1) if | Δ t₂|≤|Δt₁And if the actual room temperature is close to the target room temperature, the second adjustment is not carried out.

(2) If | Δ t₂|>|Δt₁And l, explaining that the regulation effect is not good, and performing second adjustment when the actual value is far away from the target room temperature at the room temperature.

For the time interval T', 25-30W/m in step S3²、30-35W/m²、35-40W/m²、40-45W/m²And the time intervals T' of the buildings with the energy consumption levels of 45W and above are respectively 3h, 2.5h, 2h and 1 h. The building energy consumption is 25-30W/m²For the sake of example, after 3 hours have passed after the first adjustment, it is determined whether a second adjustment is necessary.

And S4, when the second adjustment is needed, adjusting the temperature of the heat medium for the second time according to a certain range, and increasing or decreasing the temperature of the heat medium, wherein the range of the second adjustment is smaller than that of the first adjustment.

In a popular way, the first adjustment is coarse adjustment, and the second adjustment is fine adjustment, so that the amplitude of the second adjustment is smaller than that of the first adjustment.

For the amplitude of the second adjustment in step S4, 25-30W/m²、30-35W/m²、35-40W/m²、40-45W/m²And the amplitude of the second adjustment of the buildings with the energy consumption levels of 45W and above is +/-0.5 degrees, +/-1 degrees and +/-1 degrees respectively. The building energy consumption is 25-30W/m²For the sake of example, the second adjustment has a magnitude of ± 0.5 degrees.

The heating medium is secondary water supply, the adjusting direction of the invention is explained, the adjustment is realized by adjusting the secondary water supply temperature up or down during the first adjustment and the second adjustment, and if the current actual room temperature is higher than the target room temperature, the secondary water supply temperature is adjusted down; and if the actual room temperature is lower than the target room temperature, the temperature of the secondary water supply is adjusted upwards.

The heating power station sets a building indoor temperature target value to be controlled, a room temperature acquisition device is installed in the building, and the secondary water supply temperature of the heating power station is adjusted according to the difference value between the actual room temperature and the set building target room temperature. In the invention, the actual room temperature is obtained according to the temperature sensors in the building, at least three temperature sensors are arranged in one building, the installation positions of the three temperature sensors are respectively the top corner, the middle house and the bottom corner, and the average value of all the arranged temperature sensors is taken as the actual room temperature.

Example 1

The energy consumption of the method is 25-30W/m when the method is applied to a building²The first adjustment cycle that has occurred is 0: 00-5:59, 0: 00 is the adjusting moment of the first adjusting period, and the time of the upcoming second adjusting period is 6: 00-11: 59. since the average value of the outdoor actual measurement values in the first adjustment cycle is 15 degrees, and the average value of the outdoor temperature predicted values in the second adjustment cycle is 11 degrees, 15-11 is 4 degrees and is greater than 3 degrees, based on the recorded temperature values of the weather forecast, a of the adjustment condition in step S1 is satisfied, the heating station starts adjusting the heating medium temperature at a time 6 hours apart from the first adjustment cycle, that is, 6: 00. At this time, the actual room temperature is 19 degrees, the target room temperature is 18 degrees, and the actual room temperature is greater than the target room temperature, so that it is necessary to reduce the supply of the heat medium, thereby reducing the temperature of the heat medium by 1 degree. After the time interval T', i.e. 3 hours, i.e. 9:00, it is determined whether the second adjustment is needed, and the determination method is: at the moment, the actual room temperature is 16 ℃, the target room temperature is 18 ℃, and |. DELTA.t₂I.e., | 2 deg.C, the actual room temperature is 17 deg.C at 3:00 time within T' time of last evaluation period, the target room temperature is 18 deg.C, | Δ T₁L is 1 degree, | Δ t₂|>|Δt₁If yes, the adjustment is performed for the second time.And during the second adjustment, the secondary water supply temperature is adjusted up to 0.5 ℃ because the actual room temperature is lower than the target room temperature. The heating medium control is thus completed for the entire cycle, and after 6 hours, the temperature control of the heating medium is carried out again according to the method described above.

Due to the fact that hysteresis characteristics and room temperature change rules determined by a residential building structure and an indoor heating mode (floor heating and radiators) are different, adjustment control and optimization rules of the heat exchange station are different. The regulation and control method is formed under the consideration of factors such as outdoor comprehensive temperature, day and night human body thermal comfort feeling requirements, indoor temperature control target requirements (constant temperature, stage temperature change) and the like. And obtaining a heat exchange station optimization control strategy which takes the preset indoor heating temperature as a total target, the building heat consumption which meets the heating comfort degree of the heat user as a control target, the water supply temperature of the heat user and the like as control parameters.

The heating power enterprise does not need artificial experience to consider the change of the secondary side water supply temperature under the condition of climate change for the heating power station automatic control system, does not need to set a control strategy through a gas alternative compensation curve, avoids the dependence of artificial experience, and realizes the unmanned driving of the heating power station automatic control system.

The invention combines the rough adjustment of the first adjustment with the fine adjustment of the second adjustment through the periodic judgment and regulation, thereby not only meeting the requirement of heat supply and adjusting the temperature of the heat medium in time according to the supply and demand relationship to meet the requirement of a user using heat, ensuring the heat supply temperature, but also saving energy. The regulation and control method can also ensure that the heating system can stably run, and avoids the heating system from generating fluctuation through scientific setting of parameters.

Those skilled in the art can readily devise many other varied embodiments that will still fall within the scope of the appended claims without the use of the teachings of this invention.