JP2022509112A - Daily optimization operation method of variable number and variable angle of tidal pump station system based on time-optimized section - Google Patents

Abstract

It provides a variable number of tidal pump station systems based on a time-optimized section and a variable-angle daily-optimized operation method. The method is to fully calculate the energy consumption in the operation of the large pump station system, aim to minimize the energy consumption in the operation of the pump station system, and time optimization in the variable operation situation of the pump station system. Includes establishing a one-day optimized operation mathematical model for variable number of compartments and variable angles, and calculating and determining operation plans. The method of the present invention is applied to a tidal pump station to save operating costs.
[Selection diagram] Fig. 2

Description

The present invention belongs to the field of energy-saving technology for pump stations, and relates to the number of tide-sensitive pump station units based on a time-optimized section and the one-day optimized operation method for variable angles. The goal is to minimize the total operating cost of the tide pump station system, assuming that the demand for total pumped water per day is met and the pump station operates safely in response to the problem of high energy consumption that exists in Japan. Provided is a method for determining a daily optimized operation plan of a variable number of vehicles and a variable angle based on a time-optimized section in a variable operation situation.

In China, many large pump stations are being built along rivers and canals that connect to the rivers. These pump stations play an important role in irrigation drainage and water regulation, and their characteristics are that the head changes depending on the tide level, and high tides twice a day and low tides appear twice a day. On the other hand, in the current operation method of the pump station, the number of units operated and the blade angle are usually fixed to be constant, and the waste of energy is serious.

An object of the present invention is to overcome the drawback of significant energy waste due to reduced system efficiency when the tide pump station system is operated in a single mode of operation. When the total system cost is saved most, assuming that the number of station units and the method of determining the daily optimization operation method of variable angle are satisfied and the pump station operates safely and the total amount of pumped water per day is satisfied. Determine the number of units operated and the number of blade angle changes during the day of the tide pump station, the time-optimized section, the number of units operated in each time section, and the blade mounting angle.

The technical means of the present invention is a one-day optimized operation method of a variable number of tide pump stations and a variable angle based on a time-optimized section, and one day is based on the change rule of the water level / lift of the tide pump station. One day of the pump station system after optimizing the time zone by dividing it into different time zones, considering the operating cost of the pump station and the on / off cost based on the improved particle group algorithm, and satisfying the pumping water volume requirement. It is characterized in that the combination of the number of pump station units operated and the blade angle for each time zone is calculated and determined when the operating cost of the pump station unit is most saved.

It is a one-day optimized operation method with a variable number of tidal pump stations and a variable angle based on the time-optimized section.
A: Steps to calculate total energy consumption in the operation of a large pump station system,
B: Steps to determine the optimized operation plan for the variable number and variable angle of the pump station system at a constant flow rate and head of the pump station.
C: Steps to determine the daily change rule of the water level on the tidal side of the pump station and the head of the pump station,
D: One-day optimization of variable number of pump station systems and variable angles Steps to determine the number of time sections and limit range in the variable operation status of the operation plan,
E: A step to quantitatively calculate the cost of parts loss when turning the pump station unit on and off,
F: Steps to establish a one-day optimized operation mathematical model of variable number and variable angle pump station system based on time-optimized compartment,
G: Includes a variable number of pump station systems based on a time-optimized section, a time-optimized section of a day-optimized operation with a variable angle, and a step of calculating and determining a section operation plan.

（１）
式中、Ｐ_ｐｍは、メインウォーターポンプシステムのエネルギー消費量であり、ρ（単位：ｋｇ／ｍ^３）は、水体密度であり、ｇ（単位：ｍ／ｓ^２）は、重力加速度である。Ｑ_ｚ（単位：ｍ^３／ｓ）は、ポンプステーション流量であり、Ｈ_ｚ（単位：ｍ）は、ポンプステーション装置揚程であり、η_ｚは、ポンプ装置効率であり、η_ｄｒは、伝動機構効率であり、η_ｍｏｔは、モータ効率である。

（２）
式中、ΔＰ_ｂ（単位：ｋＷ）は、変圧器の損失であり、Ｐ_０（単位：ｋＷ）は、変圧器の定格無負荷有効損失であり、即ち鉄損であり、ｋは、無効経済当量であり、電力網における変圧器の位置によって値をとり、一般的にはｋ＝０．１ｋＷ／ｋｖａｒを取る。Ｑ_０（単位：ｋＷ）は、変圧器定格励磁電力であり、Ｓ（単位：ｋＶＡ）は、変圧器容量であり、Ｓ_ｅ（単位：ｋＶＡ）は、変圧器定格容量であり、Ｐ_ｆ（単位：ｋＷ）は、変圧器定格負荷有効損失であり、すなわち銅損であり、Ｑ_ｆ（単位：ｋＷ）は、変圧器定格負荷漏洩磁気電力であり、Ｉ_０％（単位：％）は、変圧器無負荷電流であり、Ｕ_ｄ％（単位：％）は、変圧器インピーダンス電圧である。
送電線の電力損失は、送電電流、ケーブルの長さ及びケーブル自身のパラメータに関係する。送電線接続機器の入力電力から送電線電流を求めることができる。即ち、

（３）
この電流が線路全体に生じる電力損失は、以下である。

（４）
式中、ΔＰ_ｔｅ′（単位：ｋＷ）は、単一送電線損失であり、Ｉ_ｔｅ′（単位：Ａ）は、単一送電線電流であり、Ｐ（単位：ｋＷ）は、送電線接続設備の入力電力であり、Ｕ_ｅ（単位：ｋＶ）は、当該設備の定格電圧であり、ｃｏｓφは、電力要素であり、ｒ_０（単位：Ω／ｋｍ）は、送電線の単位長さ抵抗であり、ｌ（単位：ｋｍ）は、線路長である。
ポンプステーションに電力を供給する送電線は、ステーション外の変電所からポンプステーションの主変圧器に電力を供給する送電線、主変圧器からポンプステーションのメインモータ母線及びステーション内の他の電気機械設備に電力を供給する送電線、母線からメインモータへの送電ケーブルの３部分からなるため、送電系統損失ΔＰ_ｔｅは、この３部分損失の和となり、計算式が以下である。

（５）
ステーション内用の電気設備は、主にメインウォーターポンプユニットの正常な動作を保証するために設置された必要な補機を含み、通常、油ガス水システム、励磁変圧器、汚染防止設備、照明設備及び通風設備などを含む。これらのステーション用電力設備では、設備によっては運行時間の長さが異なる。よって、１周期内のステーション用補機の総エネルギー消費量を計算し、単位流量あたりのステーション用補機の消費電力Ｐ_ｚｎ′を計算すると、ステーション用補機システムのエネルギー消費量Ｐ_ｚｎは、以下である。
Ｐ_ｚｎ＝Ｐ_ｚｎ′×Ｑ_ｚ（６）
ここで、Ｑ_ｚ（単位：ｍ^３／ｓ）は、ポンプステーション流量であり、Ｐ_ｚｎ′（単位：ｋＷ／（ｍ^３／ｓ））は、単位流量あたりのステーション用補機の消費電力である。 The method for calculating the total energy consumption in the operation of the large pump station system according to step A is as follows. In large pump station systems, according to the order of energy transfer, electrical energy enters the main transformer of the pump station from the substation outside the pump station via a dedicated high-voltage transmission line, and then along the power supply cable to the water pump system and supplements for the station. It supplies power to station electrical equipment such as machines (eg oil gas water systems, pollution control equipment, lighting equipment, ventilation equipment). Therefore, when calculating the total operating cost _Fz of the pump station system, the total energy consumption of the system is the energy consumption P _pm of the main water pump system, the energy consumption ΔP _b of the transformer, and the energy of the transmission line system. It consists of the consumption amount ΔP _te and the energy consumption amount P _zn of the auxiliary equipment system for the station. Here, the specific calculation of each energy consumption is as follows.

(1)
In the equation, P _pm is the energy consumption of the main water pump system, ρ (unit: kg / m ³ ) is the water density, and g (unit: m / s ² ) is the gravitational acceleration. Q _z (unit: m ³ / s) is the pump station flow rate, H _z (unit: m) is the pump station device head, η _z is the pump device efficiency, and η _dr is the transmission mechanism. Efficiency, η _mot is motor efficiency.

(2)
In the equation, ΔP _b (unit: kW) is the transformer loss, P ₀ (unit: kW) is the rated no-load effective loss of the transformer, that is, iron loss, and k is the invalid economy. It is equivalent and takes a value depending on the position of the transformer in the power grid, and generally takes k = 0.1 kW / kvar. Q ₀ (unit: kW) is the transformer rated excitation power, S (unit: kVA) is the transformer capacity, and _Se (unit: kVA) is the transformer rated capacity, P _f ( Unit: kW) is the transformer rated load effective loss, that is, copper loss, _Qf (unit: kW) is the transformer rated load leakage magnetic power, and I ₀ % (unit:%) is. It is a transformer no-load current, and _Ud % (unit:%) is a transformer impedance voltage.
The power loss of a transmission line is related to the transmission current, the length of the cable and the parameters of the cable itself. The transmission line current can be obtained from the input power of the transmission line connection device. That is,

(3)
The power loss that this current causes in the entire line is as follows.

(4)
In the equation, ΔP _te ′ (unit: kW) is a single transmission line loss, I _te ′ (unit: A) is a single transmission line current, and P (unit: kW) is a transmission line connection. Ue (unit: kV) is the rated voltage of the equipment, _cosφ is the power element, and r ₀ (unit: Ω / km) is the unit length resistance of the transmission line. L (unit: km) is the line length.
The transmission lines that supply power to the pump station are the transmission line that supplies power from the substation outside the station to the main transformer of the pump station, the main motor bus of the pump station from the main transformer, and other electromechanical equipment inside the station. Since it consists of three parts, a power transmission line that supplies power to the power transmission line and a power transmission cable from the bus to the main motor, the power transmission system loss ΔP _te is the sum of these three parts loss, and the calculation formula is as follows.

(5)
Electrical installations within the station mainly include the necessary accessories installed to ensure the normal operation of the main water pump unit, usually oil gas water systems, exciting transformers, pollution control equipment, lighting equipment. And ventilation equipment, etc. The length of operation time of these station power equipment varies depending on the equipment. Therefore, when the total energy consumption of the station auxiliary equipment in one cycle is calculated and the power consumption P _zn ′ of the station auxiliary equipment per unit flow rate is calculated, the energy consumption P _zn of the station auxiliary equipment system is calculated. It is as follows.
P _zn = P _zn ′ × Q _z (6)
Here, Q _z (unit: m ³ / s) is the pump station flow rate, and P _zn ′ (unit: kW / (m ³ / s)) is the power consumption of the station auxiliary machine per unit flow rate. be.

Considering the peculiarity of the tidal-sensitive pump station being affected by the tide, we will adopt measures to change the number of units operated and the blade angle multiple times to realize the optimized operation of the pump station. Therefore, when calculating the total cost of the pump station system, the on-off loss cost fe _{on_off} cannot be ignored, and for the exact calculation method, refer to the accurate quantitative calculation of the on-off loss cost in step E.

（ｋＷ／（ｍ^３／ｓ））が最小であるオン計画は、最適な運行計画であり、ポンプステーションシステムの単位流量あたりのシステムエネルギー消費量

の最小を目標として、以下の最適化数学モデルを確立する。

（７）
制限条件は、以下である。

（８）
式中：ρ（単位：ｋｇ／ｍ^３）は、水体密度であり、ｇ（単位：ｍ／ｓ^２）は、重力加速度であり、Ｑ_ｉ（単位：ｍ^３／ｓ）は、第ｉ基ポンプステーションユニットの単機流量であり、Ｑ_{ｉ，ｍｉｎ}、Ｑ_{ｉ，ｍａｘ}（単位：ｍ^３／ｓ）は、それぞれ第ｉ基ポンプステーションの最小、最大単機流量であり、α_ｉ（単位：°）は、第ｉ基ポンプステーションのブレード角度であり、Ｑ_ｘ（単位：ｍ^３／ｓ）は、ポンプステーションの必要揚水流量であり、α_{ｉ，ｍｉｎ}、α_{ｉ，ｍａｘ}（単位：゜）は、それぞれ第ｉ基ポンプステーションの最小、最大ブレード角度であり、Ｈ_ｚｉ（単位：ｍ）は、第ｉ座ポンプステーション装置揚程であり、η_ｚｉは、第ｉ基ポンプステーション装置効率であり、η_ｄｒｉは、第ｉ基ポンプステーション伝動機構効率であり、η_ｍｏｔｉは、第ｉ基ポンプステーションモータ効率であり、ｎ_ｉは、第ｉ基ポンプステーションユニット稼働台数であり、Ｍ_{ｉ，ｍａｘ}は、第ｉ基ポンプステーションの搭載台数であり、その値が正の整数であり、ΔＰ_ｂｉ（単位：ｋＷ）は、第ｉ基ポンプステーションの変圧器損失であり、ΔＰ_ｔｅｉ（単位：ｋＷ）は、第ｉ基ポンプステーションの送電システム損失であり、Ｐ_ｚｎｉ（単位：ｋＷ）は、第ｉ基ポンプステーションのステーション用補機システムのエネルギー消費量であり、ｋは、ポンプステーションの数であり、その値が正の整数であり、

は、ポンプステーションの流量である。 The method for determining the optimized operation plan for the variable number of pump station systems and the variable angle at the constant flow rate and head of the pump station in step B is as follows. System energy consumption per unit flow rate when the pump station is operated in the range of 0 to maximum unit single machine flow rate q _max increase of the required pumping flow rate at a constant head _Hz .

The on-plan with the minimum (kW / (m ³ / s)) is the optimal operation plan and the system energy consumption per unit flow rate of the pump station system.

The following optimized mathematical model is established with the goal of minimizing.

(7)
The limiting conditions are as follows.

(8)
In the formula: ρ (unit: kg / m ³ ) is the water body density, g (unit: m / s ² ) is the gravity acceleration, and Q _i (unit: m ³ / s) is the i-th group. The single machine flow rate of the pump station unit, Q _{i, min} , Q _{i, max} (unit: m ³ / s) is the minimum and maximum single machine flow rate of the i-type pump station, respectively, and α _i (unit: °). Is the blade angle of the i-group pump station, Q _x (unit: m ³ / s) is the required pumping flow rate of the pump station, and α _{i, min} , α _{i, max} (unit: °) are The minimum and maximum blade angles of the i-group pump station, respectively, H _zi (unit: m) is the i-seat pump station device lift, and η _zi is the i-group pump station device efficiency, η _dri. Is the i-group pump station transmission mechanism efficiency, η _motii is the i-group pump station motor efficiency, n _i is the number of i-group pump station units in operation, and Mi _{and max} are the i-th group i. The number of installed pump stations, the value of which is a positive integer, ΔP _bi (unit: kW) is the transformer loss of the i-group pump station, and ΔP _tei (unit: kW) is the i-th. The power transmission system loss of the base pump station, P _zni (unit: kW) is the energy consumption of the auxiliary equipment system for the station of the base i pump station, k is the number of pump stations, and its value is It is a positive integer and

Is the flow rate of the pump station.

With the goal of minimizing the energy consumption per unit flow rate of the pump station system, the optimization models of equations (7) and (8) are programmed to find a solution, and the pump when the pump station head is constant. Determine the optimized operation plan for the variable number of station systems and variable angles.

The actual pumping flow rate of the pump station in the optimized operation plan described in step B is slightly larger than the required flow rate, and the balance between the pumping amount and the demand amount is achieved by reducing the operating time of one unit in the pump station. By adjusting the operating conditions of the water pump unit to ensure that the pumping flow rate of the pump station is exactly equal to the required flow rate, it is possible to avoid a decrease in efficiency and energy consumption.

In step C, the daily change rule of the tidal side water level of the pump station and the pump station head is determined as follows. The water level on the tidal side of the pump station changes frequently under the influence of the tide of the river. Pump station upstream / downstream water level data is collected to calculate the pump station head and create a head change curve. As shown in FIG. 1, the change in the head of the tidal pump station shows a regular change, with high tide level twice a day, low tide level twice, and water level between high tide and low tide. The change in head is drastic, and the change in water level is large.

In step D, the number of time sections and the limit range in the variable operation status of the variable number of pump station systems and the variable daily optimization operation plan of the variable angle are determined as follows. As for the change of the water level on the tidal side of the pump station, two high tide levels and two low tide levels appear regularly within a day, and the range of change in the water level is large, and the day varies depending on the change in water level and head. Determine the optimized operation plan for each time zone.

When one day was divided into x (x = 1, 2, 3, 4 ...) time zones, and the total system cost of x types of division plans was calculated and compared, the number of time zones was smaller than 4. When the daily fluctuation range of the water level is large, the operating time of the inefficient zone of the unit is long, the system efficiency is low, and the operating cost of the pump station system is high. When the number of time zones is larger than 4, the larger the number of time zones, the lower the operating energy consumption of the pump station system, but the less the decrease in energy consumption and the higher the on / off loss cost of the unit, the more the pump station system. On the contrary, the operating cost of is high. Therefore, it is suitable because the operating cost of the system is low when the day is divided into four time zones based on the rule of tide level change.

According to the daily change rule of the head, 24 hours a day is set as the boundary between the adjacent high tide level and low tide level, one time zone is determined for each range, and the day is divided into four time zones. As shown in FIG. 1, at this time, the section corresponds to storm surge twice a day and storm surge twice a day. When the requirement for pumping volume is satisfied, the goal is to save the operating cost F of the pump station system most, and the four time zone division optimization plans, the unit operating number n corresponding to each time zone, and the blade angle α. Determine the combination.

In step E, the component loss cost for turning the pump station unit on and off is quantitatively calculated as follows. The actual on / off cost of the unit under existing conditions is calculated, that is, the amount of decrease in the operating life of the main parts of the unit in one on / off of the unit is quantitatively calculated, that is, the amount of decrease in the motor insulation life is calculated.

（９）
式中、Ｋ_Ｔは、熱要素の劣化速度であり、Ｋ_Ｖは、電気要素の劣化速度であり、Ｋ_Ｎは、機械要素の劣化速度であり、ｔ（単位：ｈ）は、ユニットの運行時間であり、Ｎは、オンオフの回数であり、１計算周期内に時間ｔと共に変化する。

絶縁強度の劣化が３０％になるとオーバーホールしなければならず、すなわちＵ_ｂ％＝７０％になるとユニットのオーバーホールをしなければならないと仮定し、
７０％＝（１－Ｋ_Ｔ・ｔ－Ｋ_Ｖ・ｔ－Ｋ_Ｎ・Ｎ（ｔ））×１００％
即ち、（Ｋ_Ｔ＋Ｋ_Ｖ）ｔ＋Ｋ_Ｎ・Ｎ（ｔ）＝３０％ （１０）
Ｎ回、Ｎ＋１回のオンオフにおけるモータ絶縁寿命は、それぞれ以下であり、
ｔ_Ｎ＝（３０％－Ｋ_ＮＮ）／（Ｋ_Ｔ＋Ｋ_Ｖ）
ｔ_Ｎ＋１＝（３０％－Ｋ_Ｎ（Ｎ＋１））／（Ｋ_Ｔ＋Ｋ_Ｖ）
両式の減算によって、１回のオンオフにおけるモータの絶縁寿命短縮は、式（１０）となり、
Δｔ＝Ｋ_Ｎ／（Ｋ_Ｔ＋Ｋ_Ｖ）（１１）
式（１１）で、各劣化係数を最大値、最小値でそれぞれ同時に代入して１回のオンオフにおける絶縁寿命の短縮値を算出し、続いてこの絶縁寿命の短縮値が絶縁全寿命に占める割合及び絶縁費用によって、オンオフ１回の絶縁損失の費用を算出する。 As the operating time of the motor increases, the deterioration of insulation becomes more serious year by year, and the dielectric strength also decreases accordingly. There are many factors that cause deterioration of motor insulation, and deterioration factors of motor insulation include thermal factors, electrical factors, mechanical factors, and environmental factors. The dielectric strength is determined by the following formula.

(9)
In the formula, K _T is the deterioration rate of the thermal element, K _V is the deterioration rate of the electric element, K _N is the deterioration rate of the mechanical element, and t (unit: h) is the operation of the unit. Time, N is the number of on / off times, and changes with time t within one calculation cycle.

Assuming that when the dielectric strength degradation is 30%, it must be overhauled, that is, when _Ub % = 70%, the unit must be overhauled.
70% = (1- _KT・ t-K _V・ t-K _N・ N (t)) × 100%
That is, ( _{KT + KV} ) t + KNN (t) = 30% (10)
The motor insulation life for N times and N + 1 times on / off is as follows.
t _N = (30% -K _N N) / ( _KT + K _V )
t _{N + 1} = (30% -K _N (N + 1)) / ( _KT + _KV )
By subtracting both equations, the shortening of the insulation life of the motor in one on / off becomes equation (10).
Δt = K _N / ( _KT + K _V ) (11)
In equation (11), each deterioration coefficient is substituted at the maximum value and the minimum value at the same time to calculate the shortened value of the insulation life in one on / off, and then the ratio of the shortened value of the insulation life to the total life of the insulation. And the cost of insulation loss once on and off is calculated from the insulation cost.

（１２）
ここで、

（１３）
最適化モデル制限条件は、以下である。

（１４）
式中、Ｐ_{ｐｍｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションのメインウォーターポンプシステムのエネルギー消費量であり、ΔＰ_{ｔｅｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションの送電システムの損失量であり、ΔＰ_ｂｉ，ｊ（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションの変圧器の損失量であり、ΔＰ_{ｚｎｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションのステーション用補機システムのエネルギー消費量であり、ΔＴ_ｊ（単位：ｈ）は、第ｊ時間帯の時間長であり、Ｆ_{ｏｎ＿ｏｆｆｊ}は、第ｊ時間帯のオンオフ費用であり、ｎ_ｉｍａｘは、第ｉ基ポンプステーションのユニット搭載台数であり、α_{ｉ，ｍｉｎ}、α_{ｉ，ｍａｘ}は、第ｉ基ポンプステーションユニットの最小、最大ブレード角度であり、Ｑ_ｉ，ｊ（単位：ｍ^３／ｓ）は、第ｉ基ポンプステーションの第ｊ時間帯の単機運行流量であり、Ｑ_ｉｍｉｎ、Ｑ_ｉｍａｘ（単位：ｍ^３／ｓ）は、それぞれ第ｉ基ポンプステーションユニットの最小、最大単機流量であり、

（単位：ｍ^３）は、ｌ個の時間帯のｋ個のポンプステーション総揚水量であり、Ｔ_ｊは、第ｊ時間帯の時間区画点であり、Ｔ_{ｍａｘ（ｍｉｎ）}、Ｔ_{ｍｉｎ（ｍａｘ）}（単位：ｈ）は、それぞれ隣り合う高（低）潮位、低（高）潮位が出現する時間であり、Ｖ_ｘ（単位：ｍ^３）は、ポンプステーションの１日の必要揚水量である。 In step F, the daily optimized operation mathematical model of the variable number and variable angle of the pump station system based on the time-optimized section is established as follows. When calculating the total cost of the pump station system in the tide pump station, it is necessary to consider not only the operating cost of each time zone of the pump station system but also the on-off cost _{Fon_off} of each time zone, and the current electricity price is used. Let it be fe element / (kW · h). Assuming that the daily pumping amount requirement is met and the pump station operates safely, the goal is to make adjustments in consideration of the number of units operated + variable angle, and to save the most daily operating cost of the pump station system. Establish an optimized operation mathematical model.

(12)
here,

(13)
The optimization model limiting conditions are as follows.

(14)
In the equation, P _{pmi, j} (unit: kW) is the energy consumption of the main water pump system of the i-group pump station in the j-time zone, and ΔP _{tei, j} (unit: kW) is the j-hour. The loss amount of the transmission system of the i-group pump station in the band, ΔP _{bi, j} (unit: kW) is the loss amount of the transformer of the i-group pump station in the j-time zone, ΔP _{zni, j.} (Unit: kW) is the energy consumption of the station auxiliary equipment system of the i-th pump station in the _jth time zone, and ΔTj (unit: h) is the time length in the jth time zone, F. _{on_offj} is the on / off cost of the jth time zone, _nimax is the number of units installed in the i-group pump station, and α _{i, min} , α _{i, max} are the minimum and maximum of the i-group pump station unit. The blade angle, Q _{i, j} (unit: m ³ / s) is the single machine operating flow rate in the j time zone of the i-group pump station, and Q _imin , Q _imax (unit: m ³ / s) is. , The minimum and maximum single-machine flow rate of the i-group pump station unit, respectively.

(Unit: m ³ ) is the total pumping amount of k pump stations in one time zone, T _j is a time interval point in the jth time zone, and T _{max (min)} and T _{min (max} ). ₎ (Unit: h) is the time when the adjacent high (low) tide level and low (high) tide level appear, respectively, and V _x (unit: m ³ ) is the daily required pumping amount of the pump station. ..

In step G, the calculation and determination of the time-optimized section and the section operation plan of the variable number of pump station systems and the variable angle of the one-day optimized operation based on the time-optimized section are as follows. Optimizing the daily optimization operation of the variable number and variable angle of the pump station system Calculation and solution of the section and section operation plan is to solve a complicated nonlinear combination problem. The present invention calculates and solves an optimization plan using an improved mixed particle swarm algorithm. The solution process is shown in FIG. 2, and the specific steps are as follows.
(1) In step D, based on the water level change rule of the high tide twice a day and the low tide twice a day of the tide pump station, the high tide level and the low tide level adjacent to each other 24 hours a day according to the daily change rule of the lift. One time zone is determined for each range, and the day is divided into four time zones. If the plan is optimized, i.e., based on the energy consumption of the pump station system described in step A, and it is decided to meet the daily pumping water requirement, the operating energy consumption of the pump station system is saved most. The optimum operation plan is the combination of the number of units operated and the blade angle.
(2) The on / off status of all time zones of each time slot plan is determined, the total on / off cost of each time slot plan is accurately calculated by step E, and the pump station system based on the time optimization section proposed in step F is used. Based on the daily optimized operation mathematical model of variable number and variable angle, calculate the total operating cost of the corresponding pump station system for each time zone plan, and plan when the total operating cost of the pump station system is saved most. , The initial plan of the daily optimization operation optimization plan of the variable number and variable angle of the pump station system.
(3) The total operating cost of the pump station system of the m-type new time-division plan is calculated by updating the m-type new time-division plan by the improved mixed particle group algorithm update formula, and the m-type new plan is calculated by the above steps. If the minimum value of the total operating cost of the pump station system in the initial plan is smaller than the minimum operating cost of the pump station system in m types of new plans, the minimum value of the total operating cost of the pump station system is determined and compared with the initial plan cost. Update the optimal daily operation plan for the variable number and variable angle of the pump station system, and conversely suspend the original plan.
(4) The time interval plan is constantly updated according to the algorithm, the algorithm converges until the minimum total operating cost of the pump station system approaches a stable value, the time interval plan update iteration is stopped, and the current plan is stopped. Is the optimal daily operation plan for the variable number and variable angle of the pump station system unit, and the total operating cost of the pump station system of the corresponding plan is determined.

The beneficial effects of the present invention are: Based on the water level change rule of the tide pump station, the day is divided into different time zones with variable operation status, the time zone is optimized, the operation cost of the pump station and the on / off cost are taken into consideration, and the request for the amount of pumped water per day is requested. Based on the improved particle group algorithm, the optimum time zone in the variable operation situation of the pump station when the daily operation cost of the pump station system is saved most, the number of pump station units operated by time zone And blade angle combinations are calculated and determined to provide theoretical support for pump station optimized operation.

It is a schematic diagram of the daily change rule curve of the head of a tidal pump station of the present invention, and the division point range of a time section. It is a solution process diagram of the 1-day optimized operation plan of a variable number and a variable angle of the pump station system of this invention. It is a curve diagram of the head change on a certain day of the tidal pump station which concerns on embodiment of this invention. It is a curve diagram of the system efficiency of a pump station at the same head and different flow rates according to Plan 1 to Plan 3 of the embodiment of the present invention. It is a comparative figure of the saving rate of the daily operation cost of the pump station system optimization operation plan based on the time interval optimization which concerns on embodiment of this invention, and other operation plans.

Hereinafter, the present invention will be further described by adopting the technical means of the present invention with reference to the drawings and examples, but the present embodiment should not be understood as a limitation of the present invention.

The optimized operation plan is calculated based on the head change curve of a certain tidal pump station group on a certain day. This pump station group consists of three pump stations, which are station 1, station 2, and station 3, respectively. Specific information on these pump stations is as shown in Tables 2 to 8. As shown in FIG. 3, the pump station lift change rule curve on one day requires a pump station pumping average flow rate of 400 m ³ / s, that is, a pumping volume of 3.456 × 10 ⁷ m ³ from 0:00 to 24:00. Ru.

Table 2: Pump unit performance parameters for stations 1, 2 and 3

Table 3: Main transformer parameters of stations 1, 2 and 3

Table 4: Transmission line cable parameters for stations 1, 2 and 3

Table 5: Auxiliary equipment parameters for stations 1, 2 and 3

In stations 1 and 3, two ventilators correspond to one unit, and in station 2, when the number of operating units is less than 5, only one ventilator is operated and the number is 5 or more. 2. Operate all two ventilators.

Table 6: Fitting equations for flow rate and pump head

Table 7: Pumping device efficiency and flow rate fitting equations

Table 8: Fitting equation for set motor efficiency curve

Step A: Calculation of total energy consumption in operation of large pump station system Step A is the energy consumption of the optimized operation plan of constant pump station flow rate, variable number and variable angle of pump station system at head for step B. The calculation range and method of the amount are specified, and the head is 7.8 m and the required flow rate of the pump station is 400 m ³ / s in step C as an example. Here, all the units of the station 1 and the station 3 are operated, and the two units of the station 2 are operated. According to equations (1) to (6), the energy consumption of each part of the pump station system, that is, the energy consumption of the main water pump system P _pm , the energy consumption of the transformer ΔP _b , and the energy consumption of the transmission line system. Calculate the energy consumption P _zn of ΔP _te and the auxiliary equipment system for the station. Here, the specific calculation of each energy consumption is shown in Table 9.

Table 9: Energy consumption of each part of the pump station system of stations 1, 2 and 3

Step B: Optimizing the variable number and variable angle of the pump station system at a constant flow rate and head of the pump station Determining the operation plan The optimization model equations (7) and (8) are the energy consumption of the pump station system per unit flow rate. When the pump station lift is 7.5 m and the pump station flow rate is 70 to 500 m ³ / s, the single pump flow rate of a large water pump is large, so it is exactly equal to the pumping flow rate requirement. Therefore, the operational efficiency of the pump system cannot be sacrificed. Based on the requested pumping station pumping flow rate _Qr , the actual pumping flow rate of the pump station is controlled within the range of _Qr to _Qr + q _max . In the equation, q _max is the maximum unit flow rate q _max . The pump station system is the most energy-saving, and the maximum unit flow rate of this tidal pump station group is q _max = 40 m ³ / s.

The system efficiencies of the three plans when the head of the pump station is constant, the flow rate of the pump station is slightly larger than the required flow rate, and the operating time is not divided are as shown in FIG. Of these, for Plan 1, when the blade angle β of the water pump is the design angle and is normally 0 °, the one with the higher pump device group efficiency η _z operates preferentially, and it is necessary to sequentially operate with the magnitude of η _z . Turn on the power until the flow rate is satisfied. In order to maintain the operation at the design angle, the pumping flow rate of the pump unit alone is constant, and considering the actual operation problem, select an integer for the number of operating units, and the actual pumping flow rate is slightly larger than the required pumping flow rate. The operation plan is the optimum operation plan. For Plan 2, the pump station system has the highest efficiency η _ps when each unit operates at a given device head _Hz so that the pump station pumping flow is exactly equal to the required pumping flow, ie the pump station system. The operation plan with the lowest energy consumption is the optimum operation plan. Plan 3 controls the actual pumping flow rate of the pump station proposed by the present invention in the range of _Qr to _QR + q _max (increasing the flow rate), and determines the energy consumption per unit flow rate of the pump station system per day. It is the optimal operation plan with the goal of minimizing it.

を得る。計画３と比較して、システムのエネルギー消費量とシステムの効率から見て、計画３は、計画２と計画１より優れ、特に流量が小さい場合に顕著である。従って、最終的に計画３を、ポンプステーション揚程７．５ｍ、異なるポンプステーション流量時の可変台数と可変角度の最適化運行計算計画とする。 System energy consumption per unit flow rate by dividing the total energy consumption of the system obtained in Plan 1 and Plan 2 by the pumping flow rate.

To get. Compared to Plan 3, Plan 3 is superior to Plan 2 and Plan 1 in terms of system energy consumption and system efficiency, especially when the flow rate is small. Therefore, finally, Plan 3 is an optimized operation calculation plan for a pump station lift of 7.5 m, a variable number of pump stations at different flow rates, and a variable angle.

From the materials of the pump station, it can be seen that the range of change in the operating head of the pump station is 3.5 m to 8.0 m, and the range of pumping flow rate of the pump station is 0 to 500 m ³ / s. Optimized operation plan for pump station flow rate, variable number of pump station systems and variable angle at head, which were determined differently by Plan 3 based on Step A at head 0.2m intervals and flow rate 50m ³ / s intervals, respectively. To calculate.

Step C: Determining the daily change rule of the water level on the tide side of the pump station and the pump station lift Figure 3 is the lift change rule curve of the tide pump station group on a certain day, and the high tide level is twice in a day. And two low tides appear, the heads of the two high tides are 5.84 m and 5.87 m, respectively, and the heads of the two low tides are 3.57 m and 3.60 m, of high tide and low tide. During that time, the fluctuation range of the water level is large.

Step D: Daily optimization of variable number and variable angle of pump station system Determination of time division number and limit range in variable operation status of operation plan The change of the water level on the tidal side of the pump station is twice a day. A high tide level and two low tide levels appear regularly, and the range of change in the water level is large. According to the change in the water level, the day is divided into four time zones and the optimized operation plan is determined for each. Taking the daily head change curve of FIG. 3 as an example in step C, when the required pump station flow rate is 400 m ³ / s, the optimum daily operation plan of the pump station is calculated.

According to the daily change rule of the lift, one time boundary point is generated between the high tide level and the low tide level for 24 hours, respectively, the first boundary point of the four time segments is set to 0h, and the other three boundary points are located. The range is 4.35 to 7.25 h, 7.25 to 16.65 h, and 16.65 to 19.75 h, respectively.

Step E: Quantitative calculation of component loss cost when turning on / off the pump station unit The on / off cost of the pump station mainly calculates the motor insulation deterioration loss. The dielectric strength at the time of on / off can be calculated by the equation (11). However, when the motor insulating material is polyester resin, _KT = _0.114 × ^10-6 , KEN = (30 to ₄₅ ) × ^10-6 , KV = (1.03 to 2.06) × 10. It is ^-6 , and it is calculated that the insulation life is reduced by 0.002 to 0.003 years in one on / off of one unit by substituting the formula (11). The insulation cost of the motor is 500,000 yuan, the life is 20 years, and the cost of turning on and off one unit is 50 to 75 yuan, which is 65 yuan.

最適化モデル制限条件は、以下である。

ここで、Ｆ_{ｏｎ＿ｏｆｆｊ}は、第ｊの時間帯のオンオフ費用であり、ｎ_ｍａｘ＝１６，１０，７。α_ｉｍｉｎ、α_ｉｍａｘについて、第ｉ（ｉ＝１，２，３）基のポンプステーションユニットの最小、最大ブレード角度であり、それぞれ［－４°，４°］、［－６°，４°］、［－６°，４°］である。Ｑ_ｉｍｉｎ、Ｑ_ｉｍａｘ（単位：ｍ^３／ｓ）は、第ｉ基のポンプステーションユニットの最小、最大の単機流量である。

（単位：ｍ^３）は、４つの時間帯の３つのポンプステーションの総揚水量である。Ｔ_ｊは、第ｊの時間帯の時間区画点範囲であり、Ｔ_{ｊｍａｘ（ｍｉｎ）}、Ｔ_{ｊｍｉｎ（ｍａｘ）}（単位：ｈ）は、それぞれ隣り合う高潮位、低潮位の時点である。Ｖ_ｘ（単位：ｍ^３）は、必要揚水量である。ｉ＝１，２，３。ｊ＝１，２，３，４。 Step F: 1-day optimized operation mathematical model of variable number and variable angle of pump station system based on time-optimized partition From step E, the cost of one unit on / off is 50-75 yuan, and F _{on_off} = 65 yuan is taken, and it is assumed that the current power price fe = 0.5968 yuan / (kW · h). Optimal of the same tide pump station with the goal of saving the most daily operating cost of the pump station system, assuming that the pump station's daily pumping volume requirements are met and the pump station operates safely. Establish a mathematical model for pumping.

The optimization model limiting conditions are as follows.

Here, F _{on_offj} is the on / off cost of the jth time zone, and n _max = 16,10,7. For α _imin and α _imax , the minimum and maximum blade angles of the pump station unit of the i (i = 1, 2, 3) group are [-4 °, 4 °] and [-6 °, 4 °], respectively. , [-6 °, 4 °]. Q _imin and Q _imax (unit: m ³ / s) are the minimum and maximum single-machine flow rates of the i-group pump station unit.

(Unit: m ³ ) is the total pumping amount of the three pump stations in the four time zones. T _j is a time zone point range of the jth time zone, and T _{jmax (min)} and T _{jmin (max)} (unit: h) are the time points of the adjacent high tide level and low tide level, respectively. V _x (unit: m ³ ) is the required pumping amount. i = 1, 2, 3. j = 1,2,3,4.

Step G: Calculation and determination of time-optimized compartment and compartment operation plan for one-day optimized operation of variable number and variable angle of pump station system based on time-optimized compartment The present invention is optimized using the improved mixed particle group algorithm. The algorithm is calculated and solved, and the algorithm is improved and adjusted for the characteristics of the optimized operation solution of the pump station before using the algorithm. After the experiment, when the population number is 400 and the number of iterations is 350, the stability of the algorithm convergence is good.

According to step G and the step of FIG. 2, the optimization calculation is performed for the pump station system optimization operation model of this embodiment, and the pump station system satisfies the daily average flow rate of 450 m ³ / s. It has been decided that the daily optimum operation optimization plan and the total operation cost Fo are _474,961 yuan, and the operation plan is shown in Table 10.

Table 10: Daily optimization operation plan of the pump station system based on the time optimization section that satisfies the daily average flow rate of 450 m ³ / s for one day of stations 1, 2 and 3.

At the same time, the required average flow rate of 450 m ³ / s for the same day of the same pump station group is calculated. According to Plan 1, if the pump station operates at a design angle of 0 ° all day and a fixed number of units, the _daily optimized operating cost F1 of the pump station system is 490147 yuan, and the operation plan is shown in Table 11. .. Plan 2 is a daily optimization operation plan of the pump station that divides the time of the day into four time zones on average, and the operation combination of the pump station system unit + the total daily optimization operation cost of the blade angle. F ₂ is determined to be 487,490 yuan, and the optimized operation plan is shown in Table 12. Plan 3 is an optimized operation plan that divides into four time zones by time optimization and the average flow rate in each time zone meets the constraint requirements, and the daily operation cost F3 of the system is ₄₈₆₅₁₈ yuan, which is optimal. Table 13 shows the conversion operation plan. As shown in FIG. 5, the tide pump station proposed by the present invention has a total operating cost of a daily optimized operation plan of a time section based on the total amount of pumped water per day + a unit operation combination + simultaneous optimization of the blade angle. F ₀ saves 3.10%, 2.57%, and 2.38% from the total operating cost F ₁ of Plan 1, the total operating cost F ₂ of Plan 2, and the total operating cost F ₃ of Plan 3, respectively. Saves 5% to 10% or more on operating costs compared to non-optimized operating plans (generally designed and operated blade angles).

Table 11: Daily operation plan of pump station system based on blade design angles of stations 1, 2 and 3

Table 12: Daily optimized operation plan of pump station system based on fixed time zones of stations 1, 2 and 3

Table 13: Daily optimization operation plan of pump station system based on optimization time zones of stations 1, 2 and 3

(Additional note)
(Appendix 1)
It is a one-day optimized operation method of variable number and variable angle of tidal pump station system based on time-optimized section.
A: Steps to calculate total energy consumption in the operation of a large pump station system,
B: Steps to determine the optimized operation plan for the variable number and variable angles of the pump station system at a constant flow rate and head of the pump station.
C: Steps to determine the daily change rule of the water level on the tidal side of the pump station and the head of the pump station,
D: One-day optimization of variable number of pump station systems and variable angles Steps to determine the number of time sections and limit range in the variable operation status of the operation plan,
E: A step to quantitatively calculate the cost of parts loss when turning the pump station unit on and off,
F: Steps to establish a one-day optimized operation mathematical model of variable number and variable angle pump station system based on time-optimized compartment,
G: Time optimization characterized by including a variable number of pump station systems based on a time-optimized section and a time-optimized section of a variable-angle daily-optimized operation and a step of calculating and determining a section operation plan. A day-optimized operation method for variable numbers and variable angles of tide pump station systems based on compartments.

（１）

（２）

（３）

（４）
Ｐ_ｚｎ＝Ｐ_ｚｎ′×Ｑ_ｚ （５）
式中、ρ（単位：ｋｇ／ｍ^３）は、水体密度であり、ｇ（単位：ｍ／ｓ^２）は、重力加速度であり、Ｑ_ｚ（単位：ｍ^３／ｓ）は、ポンプステーション流量であり、Ｈ_ｚ（単位：ｍ）は、ポンプステーション装置揚程であり、η_ｚは、ポンプ装置効率であり、η_ｄｒは、伝動機構効率であり、η_ｍｏｔは、モータ効率であり、Ｐ_０（単位：ｋＷ）は、変圧器の定格無負荷有効損失であり、即ち鉄損であり、ｋは、無効経済当量であり、電力網における変圧器の位置によって値をとり、一般的にはｋ＝０．１ｋＷ／ｋｖａｒを取り、Ｑ_０（単位：ｋＷ）は、変圧器定格励磁電力であり、Ｓ（単位：ｋＶＡ）は、変圧器容量であり、Ｓ_ｅ（単位：ｋＶＡ）は、変圧器定格容量であり、Ｐ_ｆ（単位：ｋＷ）は、変圧器定格負荷有効損失であり、すなわち銅損であり、Ｑ_ｆ（単位：ｋＷ）は、変圧器定格負荷漏洩磁気電力であり、Ｉ_０％（単位：％）は、変圧器無負荷電流であり、Ｕ_ｄ％（単位：％）は、変圧器インピーダンス電圧であり、ΔＰ_ｔｅ′（単位：ｋＷ）は、単一送電線損失であり、Ｉ_ｔｅ′（単位：Ａ）は、単一送電線電流であり、Ｐ（単位：ｋＷ）は、送電線接続設備の入力電力であり、Ｕ_ｅ（単位：ｋＶ）は、当該設備の定格電圧であり、ｃｏｓφは、電力要素であり、ｒ_０（単位：Ω／ｋｍ）は、送電線の単位長さ抵抗であり、ｌ（単位：ｋｍ）は、線路長であり、Ｐ_ｚｎ′（単位：ｋＷ／（ｍ^３／ｓ））は、単位流量あたりのステーション用補機の消費電力である。 (Appendix 2)
In step A, the calculation of the total energy consumption in the operation of the large pump station system is calculated as follows.
Taking a large axial pump station as an example, the total energy consumption of the system is the energy consumption _Ppm of the main water pump system, the energy consumption ΔP _b of the transformer, the energy consumption ΔP _te of the transmission line system and the station. A tide pump station system based on the time-optimized section described in Appendix 1, which consists of the energy consumption _Pzn of the auxiliary equipment system, and the solution equations for the energy consumption of each part are as follows. Variable number and variable angle daily optimized operation method.

(1)

(2)

(3)

(4)
P _zn = P _zn ′ × Q _z (5)
In the equation, ρ (unit: kg / m ³ ) is the water body density, g (unit: m / s ² ) is the gravity acceleration, and Q _z (unit: m ³ / s) is the pump station flow rate. H _z (unit: m) is the pump station device lift, η _z is the pump device efficiency, η _dr is the transmission mechanism efficiency, η _mot is the motor efficiency, and P ₀ . (Unit: kW) is the rated no-load effective loss of the transformer, that is, iron loss, and k is the invalid economic equivalent, which is valued according to the position of the transformer in the power network, and generally k =. Taking 0.1 kW / kvar, Q ₀ (unit: kW) is the transformer rated excitation power, S (unit: kVA) is the transformer capacity, and _Se (unit: kVA) is the transformer. It is the rated capacity, P _f (unit: kW) is the transformer rated load effective loss, that is, the copper loss, and Q _f (unit: kW) is the transformer rated load leakage magnetic power, I ₀ . % (Unit:%) is the transformer no-load current, _Ud % (unit:%) is the transformer impedance voltage, and ΔP _te ′ (unit: kW) is the single transmission line loss. , I _te '(unit: A) is the single transmission line current, P (unit: kW) is the input power of the transmission line connection equipment, and _Ue (unit: kV) is the rating of the equipment. It is a voltage, cosφ is a power element, r ₀ (unit: Ω / km) is a unit length resistance of a transmission line, l (unit: km) is a line length, and P _zn ′ ( Unit: kW / (m ³ / s)) is the power consumption of the station auxiliary machine per unit flow rate.

（ｋＷ／（ｍ^３／ｓ））の最小を目標としてポンプステーションの揚程一定時のポンプステーションシステムの可変台数と可変角度の最適化運行計画を決定し、数学モデルは、以下であり、

（６）
制限条件は、下記式（７）であることを特徴とする
付記１に記載の時間最適化区画に基づく感潮ポンプステーションシステムの可変台数と可変角度の１日最適化運行方法。

（７）
式中：ρ（単位：ｋｇ／ｍ^３）は、水体密度であり、ｇ（単位：ｍ／ｓ^２）は、重力加速度であり、Ｑ_ｉ（単位：ｍ^３／ｓ）は、第ｉ基ポンプステーションユニットの単機流量であり、Ｑ_{ｉ，ｍｉｎ}、Ｑ_{ｉ，ｍａｘ}（単位：ｍ^３／ｓ）は、それぞれ第ｉ基ポンプステーションの最小、最大単機流量であり、α_ｉ（単位：°）は、第ｉ基ポンプステーションのブレード角度であり、Ｑ_ｘ（単位：ｍ^３／ｓ）は、ポンプステーションの必要揚水流量であり、α_{ｉ，ｍｉｎ}、α_{ｉ，ｍａｘ}（単位：゜）は、それぞれ第ｉ基ポンプステーションの最小、最大ブレード角度であり、Ｈ_ｚｉ（単位：ｍ）は、第ｉ座ポンプステーション装置揚程であり、η_ｚｉは、第ｉ基ポンプステーション装置効率であり、η_ｄｒｉは、第ｉ基ポンプステーション伝動機構効率であり、η_ｍｏｔｉは、第ｉ基ポンプステーションモータ効率であり、ｎ_ｉは、第ｉ基ポンプステーション稼働台数であり、Ｍ_{ｉ，ｍａｘ}は、第ｉ基ポンプステーションの搭載台数であり、その値が正の整数であり、ΔＰ_ｂｉ（単位：ｋＷ）は、第ｉ基ポンプステーションの変圧器損失であり、ΔＰ_ｔｅｉ（単位：ｋＷ）は、第ｉ基ポンプステーションの送電システム損失であり、Ｐ_ｚｎｉ（単位：ｋＷ）は、第ｉ基ポンプステーションのステーション用補機システムのエネルギー消費量であり、ｋは、ポンプステーションの数であり、その値が正の整数であり、

は、ポンプステーションの流量である。 (Appendix 3)
In step B, the process of determining the optimization operation plan for the variable number and variable angle of the pump station system at the constant flow rate and head of the pump station is as follows.
System energy consumption per unit flow rate when each unit is operated within the range of 0 to maximum unit single machine flow rate q _max increase of the required pumping flow rate at the specified device head _Hz .

With the goal of minimizing (kW / (m ³ / s)), we decided on an optimized operation plan for the variable number of pump station systems and variable angles when the pump station lift is constant, and the mathematical model is as follows.

(6)
The limiting condition is a one-day optimized operation method of a variable number and a variable angle of a tidal pump station system based on the time-optimized section described in Appendix 1, which is characterized by the following formula (7).

(7)
In the formula: ρ (unit: kg / m ³ ) is the water body density, g (unit: m / s ² ) is the gravity acceleration, and Q _i (unit: m ³ / s) is the i-th group. The single machine flow rate of the pump station unit, Q _{i, min} , Q _{i, max} (unit: m ³ / s) is the minimum and maximum single machine flow rate of the i-type pump station, respectively, and α _i (unit: °). Is the blade angle of the i-group pump station, Q _x (unit: m ³ / s) is the required pumping flow rate of the pump station, and α _{i, min} , α _{i, max} (unit: °) are The minimum and maximum blade angles of the i-group pump station, respectively, H _zi (unit: m) is the i-seat pump station device lift, and η _zi is the i-group pump station device efficiency, η _dri. Is the i-group pump station transmission mechanism efficiency, η _moti is the i-group pump station motor efficiency, n _i is the number of the i-group pump station in operation, and Mi _{and max} are the i-group. The number of pump stations installed, the value of which is a positive integer, ΔP _bi (unit: kW) is the transformer loss of the i-th pump station, and ΔP _tei (unit: kW) is the i-th group. It is the transmission system loss of the pump station, P _zni (unit: kW) is the energy consumption of the auxiliary equipment system for the station of the i-group pump station, k is the number of pump stations, and its value is positive. Is an integer of

Is the flow rate of the pump station.

(Appendix 4)
In step D, the method for determining the number of time sections and the limit range in the variable operation status of the one-day optimization operation plan of the variable number of the pump station system and the variable angle is as follows.
According to the daily change rule of the lift, 24 hours a day is set as the boundary between the adjacent high tide level and low tide level, one time zone is determined for each range, and the day is divided into four time zones. The goal is to save the operating cost F of the pump station system most when the demand for pumping volume is met by responding to high tides twice a day and low tides twice a day. , The variable number and variable angle of the tide pump station system based on the time-optimized section described in Appendix 1, which is characterized by determining the combination of the unit operating number n and the blade angle α corresponding to each time zone. Optimized operation method.

（８）
式中、Ｋ_Ｔは、熱要素の劣化速度であり、Ｋ_Ｖは、電気要素の劣化速度であり、Ｋ_Ｎは、機械要素の機械化量速度であり、ｔ（単位：ｈ）は、ユニットの運行時間であり、Ｎは、オンオフの回数を示し、１計算周期内に時間ｔと共に変化し、

絶縁劣化が３０％になるとオーバーホールしなければならず、すなわちＵ_ｂ％＝７０％になるとユニットのオーバーホールをしなければならないと仮定し、
７０％＝（１－Ｋ_Ｔ・ｔ－Ｋ_Ｖ・ｔ－Ｋ_Ｎ・Ｎ（ｔ））×１００％
即ち、（Ｋ_Ｔ＋Ｋ_Ｖ）ｔ＋Ｋ_Ｎ・Ｎ（ｔ）＝３０％ （９）
Ｎ回、Ｎ＋１回のオンオフにおけるモータ絶縁寿命は、それぞれ以下であり、
ｔ_Ｎ＝（３０％－Ｋ_ＮＮ）／（Ｋ_Ｔ＋Ｋ_Ｖ）
ｔ_Ｎ＋１＝（３０％－Ｋ_Ｎ（Ｎ＋１））／（Ｋ_Ｔ＋Ｋ_Ｖ）
両式の減算によって、１回のオンオフにおけるモータの絶縁寿命短縮は、式（１０）となり、
Δｔ＝Ｋ_Ｎ／（Ｋ_Ｔ＋Ｋ_Ｖ） （１０）
式（１０）で、各劣化係数を最大値、最小値でそれぞれ同時に代入して１回のオンオフにおける絶縁寿命の短縮値を算出し、続いてこの絶縁寿命の短縮値が絶縁全寿命に占める割合及び絶縁費用によって、オンオフ１回の絶縁損失の費用を算出することを特徴とする
付記１に記載の時間最適化区画に基づく感潮ポンプステーションシステムの可変台数と可変角度の１日最適化運行方法。 (Appendix 5)
In step E, the quantitative calculation of the component loss cost when the pump station unit is turned on and off is performed by finding a solution for the amount of decrease in the operating life of the main component of the unit in one on / off method by the following method.

(8)
In the formula, K _T is the deterioration rate of the thermal element, K _V is the deterioration rate of the electric element, K _N is the mechanization rate of the mechanical element, and t (unit: h) is the deterioration rate of the unit. It is an operating time, N indicates the number of times of on / off, and changes with time t within one calculation cycle.

Assuming that the insulation deterioration must be overhauled at 30%, that is, the unit must be overhauled at _Ub % = 70%.
70% = (1- _KT・ t-K _V・ t-K _N・ N (t)) × 100%
That is, ( _{KT + KV} ) t + KNN (t) = 30% (9)
The motor insulation life for N times and N + 1 times on / off is as follows.
t _N = (30% -K _N N) / ( _KT + K _V )
t _{N + 1} = (30% -K _N (N + 1)) / ( _KT + _KV )
By subtracting both equations, the shortening of the insulation life of the motor in one on / off becomes equation (10).
Δt = K _N / ( _KT + K _V ) (10)
In equation (10), each deterioration coefficient is substituted at the maximum value and the minimum value at the same time to calculate the shortened value of the insulation life in one on / off, and then the ratio of the shortened value of the insulation life to the total life of the insulation. And the daily optimization operation method of the variable number and variable angle of the tidal pump station system based on the time-optimized section described in Appendix 1, which is characterized by calculating the cost of the insulation loss once on and off by the insulation cost. ..

（１１）
ここで、

（１２）
最適化モデル制限条件は、以下であることを特徴とする
付記１に記載の時間最適化区画に基づく感潮ポンプステーションシステムの可変台数と可変角度の１日最適化運行方法。

（１３）
式中、Ｐ_{ｐｍｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションのメインウォーターポンプシステムのエネルギー消費量であり、ΔＰ_{ｔｅｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションの送電システムの損失量であり、ΔＰ_ｂｉ，ｊ（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションの変圧器の損失量であり、ΔＰ_{ｚｎｉ，ｊ}（単位：ｋＷ）は、第ｊ時間帯の第ｉ基ポンプステーションのステーション用補機システムのエネルギー消費量であり、ΔＴ_ｊ（単位：ｈ）は、第ｊ時間帯の時間長であり、Ｆ_{ｏｎ＿ｏｆｆｊ}は、第ｊ時間帯のオンオフ費用であり、ｎ_ｉｍａｘは、第ｉ基ポンプステーションのユニット搭載台数であり、α_{ｉ，ｍｉｎ}、α_{ｉ，ｍａｘ}は、第ｉ基ポンプステーションユニットの最小、最大ブレード角度であり、Ｑ_ｉ，ｊ（単位：ｍ^３／ｓ）は、第ｉ基ポンプステーションの第ｊ時間帯の単機運行流量であり、Ｑ_ｉｍｉｎ、Ｑ_ｉｍａｘ（単位：ｍ^３／ｓ）は、それぞれ第ｉ基ポンプステーションユニットの最小、最大単機流量であり、

（単位：ｍ^３）は、ｌ個の時間帯のｋ個のポンプステーション総揚水量であり、Ｔ_ｊは、第ｊ時間帯の時間区画点であり、Ｔ_{ｍａｘ（ｍｉｎ）}、Ｔ_{ｍｉｎ（ｍａｘ）}（単位：ｈ）は、それぞれ隣り合う高（低）潮位、低（高）潮位が出現する時間であり、Ｖ_ｘ（単位：ｍ^３）は、ポンプステーションの１日の必要揚水量である。 (Appendix 6)
The one-day optimized operation mathematical model of the variable number and variable angle of the pump station system based on the time-optimized section in step F is as follows.

(11)
here,

(12)
The optimization model limiting condition is a one-day optimized operation method of a variable number and a variable angle of a tidal pump station system based on the time optimization section described in Appendix 1.

(13)
In the equation, P _{pmi, j} (unit: kW) is the energy consumption of the main water pump system of the i-group pump station in the j-time zone, and ΔP _{tei, j} (unit: kW) is the j-hour. The loss amount of the transmission system of the i-group pump station in the band, ΔP _{bi, j} (unit: kW) is the loss amount of the transformer of the i-group pump station in the j-time zone, ΔP _{zni, j.} (Unit: kW) is the energy consumption of the station auxiliary equipment system of the i-th pump station in the _jth time zone, and ΔTj (unit: h) is the time length in the jth time zone, F. _{on_offj} is the on / off cost of the jth time zone, _nimax is the number of units installed in the i-group pump station, and α _{i, min} , α _{i, max} are the minimum and maximum of the i-group pump station unit. The blade angle, Q _{i, j} (unit: m ³ / s) is the single machine operating flow rate in the j time zone of the i-group pump station, and Q _imin , Q _imax (unit: m ³ / s) is. , The minimum and maximum single-machine flow rate of the i-group pump station unit, respectively.

(Unit: m ³ ) is the total pumping amount of k pump stations in one time zone, T _j is a time interval point in the jth time zone, and T _{max (min)} and T _{min (max} ). ₎ (Unit: h) is the time when the adjacent high (low) tide level and low (high) tide level appear, respectively, and V _x (unit: m ³ ) is the daily required pumping amount of the pump station. ..

(Appendix 7)
Finding the solution of the time-optimized section and section operation plan of the variable number and variable angle daily optimized operation of the pump station system based on the time-optimized section in step G is a complicated non-linear combination problem, and it is an improved mixture. The variable number and variable of the tide pump station system based on the time-optimized section described in Appendix 1 is characterized in that the process of calculating and finding the solution using the particle group algorithm and then calculating and finding the solution is as follows. One-day optimized operation method for angles.
(1) In step D, based on the water level change rule of the high tide twice a day and the low tide twice a day of the tide pump station, the high tide level and the low tide level adjacent to each other 24 hours a day according to the daily change rule of the lift. One time zone is determined for each range, and the day is divided into four time zones. If the plan is optimized, i.e., in step A, based on the energy consumption of the pump station system, it is decided to meet the pumping water volume requirement, the number of operating units in which the operating energy consumption of the pump station system is most saved. The combination of energy and blade angle is the optimum operation plan.
(2) The on / off status of all time zones of each time slot plan is determined, the total on / off cost of each time slot plan is accurately calculated by step E, and the pump station system based on the time optimization section proposed in step F is used. Based on the daily optimized operation mathematical model of variable number and variable angle, calculate the total operating cost of the corresponding pump station system for each time zone plan, and plan when the total operating cost of the pump station system is saved most. , The initial plan of the daily optimization operation optimization plan of the variable number and variable angle of the pump station system.
(3) The total operating cost of the pump station system of the m-type new time-division plan is calculated by updating the m-type new time-division plan by the improved mixed particle group algorithm update formula, and the m-type new plan is calculated by the above steps. If the minimum value of the total operating cost of the pump station system in the initial plan is smaller than the minimum operating cost of the pump station system in m types of new plans, the minimum value of the total operating cost of the pump station system is determined and compared with the initial plan cost. Update the optimal daily operation plan for the variable number and variable angle of the pump station system, and conversely suspend the original plan.
(4) The time interval plan is constantly updated according to the algorithm, the algorithm converges until the minimum total operating cost of the pump station system approaches a stable value, the time interval plan update iteration is stopped, and the current plan is stopped. Is the optimal daily operation plan for the variable number and variable angle of the pump station system unit, and the total operating cost of the pump station system of the corresponding plan is determined.

Claims (7)

It is a one-day optimized operation method of variable number and variable angle of tidal pump station system based on time-optimized section.
A: Steps to calculate total energy consumption in the operation of a large pump station system,
B: Steps to determine the optimized operation plan for the variable number and variable angles of the pump station system at a constant flow rate and head of the pump station.
C: Steps to determine the daily change rule of the water level on the tidal side of the pump station and the head of the pump station,
D: One-day optimization of variable number of pump station systems and variable angles Steps to determine the number of time sections and limit range in the variable operation status of the operation plan,
E: A step to quantitatively calculate the cost of parts loss when turning the pump station unit on and off,
F: Steps to establish a one-day optimized operation mathematical model of variable number and variable angle pump station system based on time-optimized compartment,
G: Time optimization characterized by including a variable number of pump station systems based on a time-optimized section and a time-optimized section of a variable-angle daily-optimized operation and a step of calculating and determining a section operation plan. A day-optimized operation method for variable numbers and variable angles of tide pump station systems based on compartments. In step A, the calculation of the total energy consumption in the operation of the large pump station system is calculated as follows.
Taking a large axial pump station as an example, the total energy consumption of the system is the energy consumption _Ppm of the main water pump system, the energy consumption ΔP _b of the transformer, the energy consumption ΔP _te of the transmission line system and the station. The tide pump station based on the time-optimized section according to claim 1, wherein the energy consumption of the auxiliary equipment system is _Pzn , and the solution formula of the energy consumption of each part is as follows. Daily optimized operation method for variable number of systems and variable angles.

(1)

(2)

(3)

(4)
P _zn = P _zn ′ × Q _z (5)
In the equation, ρ (unit: kg / m ³ ) is the water body density, g (unit: m / s ² ) is the gravity acceleration, and Q _z (unit: m ³ / s) is the pump station flow rate. H _z (unit: m) is the pump station device lift, η _z is the pump device efficiency, η _dr is the transmission mechanism efficiency, η _mot is the motor efficiency, and P ₀ . (Unit: kW) is the rated no-load effective loss of the transformer, that is, iron loss, and k is the invalid economic equivalent, which is valued according to the position of the transformer in the power network, and generally k =. Taking 0.1 kW / kvar, Q ₀ (unit: kW) is the transformer rated excitation power, S (unit: kVA) is the transformer capacity, and _Se (unit: kVA) is the transformer. It is the rated capacity, P _f (unit: kW) is the transformer rated load effective loss, that is, the copper loss, and Q _f (unit: kW) is the transformer rated load leakage magnetic power, I ₀ . % (Unit:%) is the transformer no-load current, _Ud % (unit:%) is the transformer impedance voltage, and ΔP _te ′ (unit: kW) is the single transmission line loss. , I _te '(unit: A) is the single transmission line current, P (unit: kW) is the input power of the transmission line connection equipment, and _Ue (unit: kV) is the rating of the equipment. It is a voltage, cosφ is a power element, r ₀ (unit: Ω / km) is a unit length resistance of a transmission line, l (unit: km) is a line length, and P _zn ′ ( Unit: kW / (m ³ / s)) is the power consumption of the station auxiliary machine per unit flow rate. In step B, the process of determining the optimization operation plan for the variable number and variable angle of the pump station system at the constant flow rate and head of the pump station is as follows.
System energy consumption per unit flow rate when each unit is operated within the range of 0 to maximum unit single machine flow rate q _max increase of the required pumping flow rate at the specified device head _Hz .

With the goal of minimizing (kW / (m ³ / s)), we decided on an optimized operation plan for the variable number of pump station systems and variable angles when the pump station lift is constant, and the mathematical model is as follows.

(6)
The limiting condition is a one-day optimized operation method of a variable number and a variable angle of a tidal pump station system based on the time-optimized section according to claim 1, wherein the limiting condition is the following formula (7).

(7)
In the formula: ρ (unit: kg / m ³ ) is the water body density, g (unit: m / s ² ) is the gravity acceleration, and Q _i (unit: m ³ / s) is the i-th group. The single machine flow rate of the pump station unit, Q _{i, min} , Q _{i, max} (unit: m ³ / s) is the minimum and maximum single machine flow rate of the i-type pump station, respectively, and α _i (unit: °). Is the blade angle of the i-group pump station, Q _x (unit: m ³ / s) is the required pumping flow rate of the pump station, and α _{i, min} , α _{i, max} (unit: °) are The minimum and maximum blade angles of the i-group pump station, respectively, H _zi (unit: m) is the i-seat pump station device lift, and η _zi is the i-group pump station device efficiency, η _dri. Is the i-group pump station transmission mechanism efficiency, η _moti is the i-group pump station motor efficiency, n _i is the number of the i-group pump station in operation, and Mi _{and max} are the i-group. The number of pump stations installed, the value of which is a positive integer, ΔP _bi (unit: kW) is the transformer loss of the i-th pump station, and ΔP _tei (unit: kW) is the i-th group. It is the transmission system loss of the pump station, P _zni (unit: kW) is the energy consumption of the auxiliary equipment system for the station of the i-group pump station, k is the number of pump stations, and its value is positive. Is an integer of

Is the flow rate of the pump station. In step D, the method for determining the number of time sections and the limit range in the variable operation status of the one-day optimization operation plan of the variable number of the pump station system and the variable angle is as follows.
According to the daily change rule of the lift, 24 hours a day is set as the boundary between the adjacent high tide level and low tide level, one time zone is determined for each range, and the day is divided into four time zones. The goal is to save the operating cost F of the pump station system most when the demand for pumping volume is met by responding to high tides twice a day and low tides twice a day. 1. A variable number and a variable angle of the tide pump station system based on the time-optimized section according to claim 1, wherein the combination of the unit operating number n corresponding to each time zone and the blade angle α is determined. Daily optimized operation method. In step E, the quantitative calculation of the component loss cost when the pump station unit is turned on and off is performed by finding a solution for the amount of decrease in the operating life of the main component of the unit in one on / off method by the following method.

(8)
In the formula, K _T is the deterioration rate of the thermal element, K _V is the deterioration rate of the electric element, K _N is the mechanization rate of the mechanical element, and t (unit: h) is the deterioration rate of the unit. It is an operating time, N indicates the number of times of on / off, and changes with time t within one calculation cycle.

Assuming that the insulation deterioration must be overhauled at 30%, that is, the unit must be overhauled at _Ub % = 70%.
70% = (1- _KT・ t-K _V・ t-K _N・ N (t)) × 100%
That is, ( _{KT + KV} ) t + KNN (t) = 30% (9)
The motor insulation life for N times and N + 1 times on / off is as follows.
t _N = (30% -K _N N) / ( _KT + K _V )
t _{N + 1} = (30% -K _N (N + 1)) / ( _KT + _KV )
By subtracting both equations, the shortening of the insulation life of the motor in one on / off becomes equation (10).
Δt = K _N / ( _KT + K _V ) (10)
In equation (10), each deterioration coefficient is substituted at the maximum value and the minimum value at the same time to calculate the shortened value of the insulation life in one on / off, and then the ratio of the shortened value of the insulation life to the total life of the insulation. The variable number and variable angle of the tidal pump station system based on the time-optimized section according to claim 1, wherein the cost of the insulation loss for one on / off operation is calculated based on the insulation cost. Method. The one-day optimized operation mathematical model of the variable number and variable angle of the pump station system based on the time-optimized section in step F is as follows.

(11)
here,

(12)
The optimization model limiting condition is a one-day optimized operation method of a variable number and a variable angle of a tidal pump station system based on the time-optimized section according to claim 1.

(13)
In the equation, P _{pmi, j} (unit: kW) is the energy consumption of the main water pump system of the i-group pump station in the j-time zone, and ΔP _{tei, j} (unit: kW) is the j-hour. The loss amount of the transmission system of the i-group pump station in the band, ΔP _{bi, j} (unit: kW) is the loss amount of the transformer of the i-group pump station in the j-time zone, ΔP _{zni, j.} (Unit: kW) is the energy consumption of the station auxiliary equipment system of the i-th pump station in the _jth time zone, and ΔTj (unit: h) is the time length in the jth time zone, F. _{on_offj} is the on / off cost of the jth time zone, _nimax is the number of units installed in the i-group pump station, and α _{i, min} , α _{i, max} are the minimum and maximum of the i-group pump station unit. The blade angle, Q _{i, j} (unit: m ³ / s) is the single machine operating flow rate in the j time zone of the i-group pump station, and Q _imin , Q _imax (unit: m ³ / s) is. , The minimum and maximum single-machine flow rate of the i-group pump station unit, respectively.

(Unit: m ³ ) is the total pumping amount of k pump stations in one time zone, T _j is a time interval point in the jth time zone, and T _{max (min)} and T _{min (max} ). ₎ (Unit: h) is the time when the adjacent high (low) tide level and low (high) tide level appear, respectively, and V _x (unit: m ³ ) is the daily required pumping amount of the pump station. .. Finding the solution of the time-optimized section and section operation plan of the variable number and variable angle daily optimized operation of the pump station system based on the time-optimized section in step G is a complicated nonlinear combination problem, and it is an improved mixture. The variable number of tide pump station systems based on the time-optimized section according to claim 1, wherein the process of calculating and finding a solution using a particle group algorithm and then calculating and finding a solution is as follows. Variable angle daily optimized operation method.
(1) In step D, based on the water level change rule of the high tide twice a day and the low tide twice a day of the tide pump station, the high tide level and the low tide level adjacent to each other 24 hours a day according to the daily change rule of the lift. One time zone is determined for each range, and the day is divided into four time zones. If the plan is optimized, i.e., in step A, based on the energy consumption of the pump station system, it is decided to meet the pumping water volume requirement, the number of operating units in which the operating energy consumption of the pump station system is most saved. The combination of energy and blade angle is the optimum operation plan.
(2) The on / off status of all time zones of each time slot plan is determined, the total on / off cost of each time slot plan is accurately calculated by step E, and the pump station system based on the time optimization section proposed in step F is used. Based on the daily optimized operation mathematical model of variable number and variable angle, calculate the total operating cost of the corresponding pump station system for each time zone plan, and plan when the total operating cost of the pump station system is saved most. , The initial plan of the daily optimization operation optimization plan of the variable number and variable angle of the pump station system.
(3) The total operating cost of the pump station system of the m-type new time-division plan is calculated by updating the m-type new time-division plan by the improved mixed particle group algorithm update formula, and the m-type new plan is calculated by the above steps. If the minimum value of the total operating cost of the pump station system in the initial plan is smaller than the minimum operating cost of the pump station system in m types of new plans, the minimum value of the total operating cost of the pump station system is determined and compared with the initial plan cost. Update the optimal daily operation plan for the variable number and variable angle of the pump station system, and conversely suspend the original plan.
(4) The time interval plan is constantly updated according to the algorithm, the algorithm converges until the minimum total operating cost of the pump station system approaches a stable value, the time interval plan update iteration is stopped, and the current plan is stopped. Is the optimal daily operation plan for the variable number and variable angle of the pump station system unit, and the total operating cost of the pump station system of the corresponding plan is determined.

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