CN110245972A - A kind of more electricity prices meterings of power grid and scheduling system - Google Patents
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Abstract
The present invention relates to dispatching of power netwoks technical fields, more particularly to a kind of more electricity price meterings of power grid and scheduling system, device is settled accounts including user's meter and area, one user's meter of each user installation, several users, which form an area and install an area, settles accounts device, user's meter of same district is connect with corresponding area clearing device connection, area's clearing device in several areas with generating set control centre.Substantial effect of the invention is: device is settled accounts by area and realizes a spot market balance between a plurality of users, in area, clearing device and generator control centre realize that secondary spot market balances, the equilibrium of supply and demand during power supply can be effectively increased, line loss is reduced and improves operation of power networks stability；Under multivalence lattice mechanism, user can be promoted to form better consumption habit, reduce electric system peak-valley difference.
Description
Technical field
The present invention relates to dispatching of power netwoks technical fields, and in particular to a kind of more electricity prices meterings of power grid and scheduling system.
Background technique
Power spot market mainly carry out a few days ago, in a few days, electric flux transaction in real time and the ancillary services such as spare, frequency modulation hand over
Easily.It is the important component of complete Power Market System, plays electricity commodity prices discovery jointly with Long-term Market
Effect.Power spot market provides marketized tools for the short-term equilibrium of supply and demand of electric power.Current electric system is pre- according to electricity consumption
It surveys with long-term contract in the signing of power generation side, and long-term unit plan in arrangement.But practical electricity consumption institute electricity demand may not be able to be with
Medium-term and long-term contract to upper, it is more it is few will go on spot market " replenishing " or " selling goods ", realize the short-term equilibrium of supply and demand of electric power.
Power spot market can be compatible with the features such as new energy fluctuation, randomness, be conducive to expand new energy consumption space.But at present
Power grid metering and scheduling system be not able to satisfy the flexibility demand of spot market, it is difficult to play the advantage of spot market.
Chinese patent CN108683192A, publication date on October 19th, 2018, a kind of power spot market go out clearing method,
By establishing DC power flow restricted model, the power output plan parameters for obtaining generating set are calculated according to DC power flow restricted model,
The PRELIMINARY RESULTS that power spot market optimizes clearly out is obtained, then is calculated by carrying out exchange Security Checking to power output plan parameters,
The trend value of each branch is obtained, and DC power flow restricted model is corrected according to each trend value, in the base of DC power flow restricted model
Solving precision is improved on plinth, and compared to directly applying AC power flow constraint to calculate, DC power flow constraint is calculated
It is more quick that power output plan parameters carry out exchange Security Checking calculating, therefore its method provided has taken into account solving precision and calculating
Speed.But its accuracy for not improving short-term forecast and development multivalence lattice mechanism, it is difficult to which the supply and demand for playing spot market is adjusted
Effect.
Summary of the invention
The technical problem to be solved by the present invention is the technology for lacking the scheduling scheme based on power spot market at present is asked
Topic.Propose the more electricity price meterings of power grid and the scheduling system of a kind of balance that can preferably balance supply with demand with multivalence lattice mechanism
System.
In order to solve the above technical problems, the technical solution used in the present invention are as follows: a kind of more electricity prices meterings of power grid and scheduling
System, including generating set control centre, including user's meter and area's clearing device, one user's meter of each user installation, if
Dry a user forms an area and simultaneously installs area's clearing device, and user's meter of same district is connected with corresponding area clearing device, several
Area's clearing device in a area is connect with generating set control centre,
Area's clearing device and user's meter execute following procedure: A) several cycle Ts will be divided into daily, it is opened in cycle T
Before beginning, the meter of user reports purchase of electricity q to area's clearing device, and area settles accounts device and declares purchase of electricity Q according to the determination of the user area amount of summarizing,
Generating set control centre arranges the unit plan in cycle T according to purchase of electricity Q, and electricity price is denoted as B1 at this time, and unit plan makes to transport
The capable product with spare maximum capacity and cycle T be greater than purchase of electricity Q and meet an urgent need electricity Q's ' and；B) user's meter is held in cycle T
Continuous prediction electricity consumption, and according to real-time electricity consumption, prediction electricity consumption and purchase of electricity q, purchase of electricity is reported to area's clearing device in real time
Qb or electricity sales amount qs, electricity price is calculated as B2, and B2 > B1 at this time；B) if the purchase of electricity qb that user's meter reports in cycle T continues △ t
Time does not strike a bargain, then settles accounts device by area with electricity price B3 and purchase electricity to generating set control centre, purchases electricity by answering urgent telegram
The corresponding unit plan of Q ' is measured to provide；D it) after cycle T, if area's clearing device applies to purchase electricity Q and has surplus electricity △ Q, generates electricity
Caused by factory deducts because of surplus after the cost of unit plan, by surplus electricity △ Q in terms of electricity price B0, and area's clearing device is moved back
Take, refund volume is △ Q × B0, and back zone clearing device is each there are the user of surplus electricity △ q progress refund, and refund volume is △
q×B0；E) circulation executes step A-D, completes daily scheduling.
Preferably, cost caused by the electricity price B1 executes unit plan according to power plant in cycle T determines, specifically
Are as follows:Wherein, ρwFor the target electricity price of Hydropower Unit, PwIt is whole Hydropower Units in week
Plan mean power, ρ in phase TrFor the target electricity price of wind, photoelectricity unit, PrPlan average function in cycle T for wind, photoelectricity unit
Rate, ρfFor the target electricity price of fired power generating unit, PfPlan mean power in cycle T for fired power generating unit, P is generating set in cycle T
The summation of mean power, the cost contain the target profit of unit quantity of electricity.Electricity price C1 cost according to caused by unit plan
It determines, electricity price C1 can be caused to increase in power shortage, i.e., when thermoelectricity participates in more, if being shown to user by moon bill,
Family can be used and know that the electricity price of which period is higher, to generate the wish actively avoided, certain customers are kept away
Peak times of power consumption are opened, reduce the peak-valley difference of power supply away from reduction line loss reduces peaking capacity.
Preferably, the meter of user reports purchase of electricity q to area's clearing device according to user's history same period electricity consumption in step A
Method, comprising the following steps: A1) in the history electricity consumption date find with the same day undergone the most similar n electricity consumption of cycle T
Day；A2) electricity consumption day that step A1 is obtained to n is used as after the electricity consumption in next cycle T is weighted and averaged reports power purchase
Measure q, wherein weight is distributed according to similarity.
Preferably, in step B user meter rolling forecast user power consumption wi∈FMethod the following steps are included:
B11) at the time of terminating remaining time t ' apart from current period t, it is real to obtain the user power utilization power recorded in current period
When curve；B12) the user power utilization power real-time curve obtained with step-length △ t partiting step B11 counts the power in step-length
The quantity m of step-length △ t of the maximum changing value p greater than threshold value △ p enters step B13 if m is greater than threshold value M, conversely, to work as
User power consumption w of the electricity consumption of preceding period t as rest period t in cycle Ti∈F；B13) obtain history electricity consumption day with to pre-
Period t is surveyed with the electricity consumption W of periodi, i ∈ E, E are that history electricity consumption day and period t to be predicted gather with the period of period, are established
Wi∈EFitting function, using fitting function acquired results as the user power consumption w of rest period t in cycle Ti∈F, and accordingly on
Report purchase of electricity qb or electricity sales amount qs to area's clearing device.The operation power of the electric appliance of non-process control is usually constant or stepping, i.e.,
User power utilization power curve can open or close generation Spline smoothing because of this electric appliances within the step-length △ t period, according to step
The power change values for changing front and back can both track electricity consumption period or duration rule of this electric appliances in daily,
According to the electricity consumption period of electric appliance or duration, so that it may predict when the electric appliances can be closed, carry out electricity consumption
Prediction.
Preferably, user's meter, which starts the area Qian Xiang clearing device in each period t, reports purchase of electricity qb's or electricity sales amount qs
Method are as follows: B21) user's meter be each user reserve minimum electricity q0；B22 before) each period t starts some fixation when
Carve, in user's meter predetermined period T in the remaining time user electricity consumption ∑i∈Fwi；B23) if the remaining purchase of electricity of user subtracts
Remove ∑i∈FwiQ0 will be less than, then user's meter reports purchase of electricity qb, if remaining purchase of electricity will be greater than 2*q0, reports electricity sales amount
After qs, the purchase of electricity qb of reporting of user or electricity sales amount qs successful matching, real time settlement.The consumption of current period t still remaining period
Electricity is determined with current time electric power.
Substantial effect of the invention is: device is settled accounts by area and realizes a spot market balance between a plurality of users,
In area, clearing device and generator control centre realize that secondary spot market balances, and can effectively increase the confession during power supply
It needs to balance, reduce line loss and improves operation of power networks stability；Under multivalence lattice mechanism, user can be promoted to form better electricity consumption
Habit reduces electric system peak-valley difference.
Detailed description of the invention
Fig. 1 is that system structure diagram is measured and dispatched to embodiment one.
Fig. 2 is power grid metering and dispatching method flow diagram.
Wherein: 100, generating set control centre, 200, area's clearing device, 300, user's meter.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, a specific embodiment of the invention is further described in detail.
Embodiment one:
A kind of more electricity prices meterings of power grid and scheduling system, as shown in Figure 1, the present embodiment includes generating set control centre 100, packet
User's meter 300 and area's clearing device 200, one user's meter 300 of each user installation are included, several users form an area simultaneously
One area's clearing device 200 is installed, user's meter 300 of same district is connected with corresponding area clearing device 200, area's clearing in several areas
Device 200 is connect with generating set control centre 100,
As shown in Fig. 2, area's clearing device 200 and user's meter 300 execute following procedure: A in the present embodiment) it will be divided into daily
Several cycle Ts, before cycle T starts, the meter of user reports purchase of electricity q to area's clearing device 200, and area settles accounts 200 basis of device
The user area amount of summarizing, which determines, declares purchase of electricity Q, and generating set control centre 100 arranges the unit meter in cycle T according to purchase of electricity Q
It draws, electricity price is denoted as B1 at this time, and unit plan makes operation and the product of spare maximum capacity and cycle T be greater than purchase of electricity Q and emergency
The sum of electricity Q '；B) 300 persistence forecasting electricity consumption of user's meter in cycle T, and according to real-time electricity consumption, prediction electricity consumption and
Purchase of electricity q reports purchase of electricity qb or electricity sales amount qs to area's clearing device 200 in real time, and electricity price is calculated as B2, and B2 > B1 at this time；B) if week
The purchase of electricity qb that user's meter 300 reports in phase T continues the △ t time and does not strike a bargain, then settles accounts device 200 to hair by area with electricity price B3
Electricity is purchased at motor group scheduling center 100, and increasing purchase electricity is provided by the corresponding unit plan of emergency electricity Q '；D) cycle T terminates
Afterwards, if area's clearing device 200 applies to purchase electricity Q and has a surplus electricity △ Q, the cost of unit plan caused by power plant is deducted because of surplus
Afterwards, by surplus electricity △ Q in terms of electricity price B0, and refund is carried out to area's clearing device 200, refund volume is △ Q × B0, and back zone is settled accounts
Device 200 is each there are the user of surplus electricity △ q progress refund, and refund volume is △ q × B0；E) circulation executes step A-D, complete
At daily scheduling.
Cost caused by electricity price B1 executes unit plan according to power plant in cycle T is determining, specifically:Wherein, ρwFor the target electricity price of Hydropower Unit, PwIt is whole Hydropower Units in cycle T
Interior plan mean power, ρrFor the target electricity price of wind, photoelectricity unit, PrPlan mean power in cycle T for wind, photoelectricity unit,
ρfFor the target electricity price of fired power generating unit, PfPlan mean power in cycle T for fired power generating unit, P is that generating set is flat in cycle T
The summation of equal power, cost contain the target profit of unit quantity of electricity.Electricity price C1 cost according to caused by unit plan is determining, can
In power shortage, i.e., when thermoelectricity participates in more, to cause electricity price C1 to increase, if being shown to user by moon bill, can make
User knows that the electricity price of which period is higher, to generate the wish actively avoided, certain customers is enabled to avoid electricity consumption
Peak period reduces the peak-valley difference of power supply away from reduction line loss reduces peaking capacity.
The meter of user reports the side of purchase of electricity q according to user's history same period electricity consumption to area's clearing device 200 in step A
Method, comprising the following steps: A1) it is found in the history electricity consumption date and had undergone cycle T the most similar n electricity consumption day with the same day；
A2) electricity consumption day that step A1 is obtained to n is used as after the electricity consumption in next cycle T is weighted and averaged reports purchase of electricity q,
Wherein, weight is distributed according to similarity.
The meter rolling forecast user power consumption w of user in step Bi∈FMethod the following steps are included: B11) work as in distance
At the time of preceding period t terminates remaining time t ', the user power utilization power real-time curve recorded in current period is obtained；B12) with
The user power utilization power real-time curve that step-length △ t partiting step B11 is obtained, the maximum changing value p for counting the power in step-length are big
In the quantity m of the step-length △ t of threshold value △ p, B13 is entered step if m is greater than threshold value M, conversely, with the electricity consumption of current period t
Measure the user power consumption w as rest period t in cycle Ti∈F；B13) obtain history electricity consumption day with the period t same period to be predicted
Electricity consumption Wi, i ∈ E, E are that history electricity consumption day and period t to be predicted gather with the period of period, establish Wi∈EFitting function,
Using fitting function acquired results as the user power consumption w of rest period t in cycle Ti∈F, and report purchase of electricity qb accordingly or sell
Electricity qs to area settle accounts device 200.The operation power of the electric appliance of non-process control is usually constant or stepping, i.e., in step-length △ t
User power utilization power curve can open or close generation Spline smoothing because of this electric appliances in section, according to the function before and after Spline smoothing
Rate changing value can both track electricity consumption period or duration rule of this electric appliances in daily, according to the use of electric appliance
Electric period or duration, so that it may predict when the electric appliances can be closed, carry out the prediction of electricity consumption.
User's meter 300 starts the method that the area Qian Xiang clearing device 200 reports purchase of electricity qb or electricity sales amount qs in each period t
Are as follows: B21) user's meter 300 be each user reserve minimum electricity q0；B22 some fixed time before) each period t starts,
In 300 predetermined period T of user's meter in the remaining time user electricity consumption ∑i∈Fwi；B23) if the remaining purchase of electricity of user subtracts
Remove ∑i∈FwiQ0 will be less than, then user's meter 300 reports purchase of electricity qb, if remaining purchase of electricity will be greater than 2*q0, reports sale of electricity
Qs is measured, after the purchase of electricity qb of reporting of user or electricity sales amount qs successful matching, real time settlement.The current period t still remaining period
Power consumption is determined with current time electric power.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (7)
1. a kind of more electricity prices of power grid are measured and scheduling system, including generating set control centre, which is characterized in that
Device, one user's meter of each user installation are settled accounts including user's meter and area, several users form a Qu Bingan
The area Zhuan Yige settles accounts device, and user's meter of same district is connected with corresponding area clearing device, area's clearing device and generator in several areas
The connection of group scheduling center,
Area's clearing device and user's meter execute following procedure:
A) several cycle Ts will be divided into daily, before cycle T starts, the meter of user reports purchase of electricity q to area's clearing device,
Area settles accounts device and declares purchase of electricity Q according to the user area amount of summarizing is determining, and generating set control centre arranges cycle T according to purchase of electricity Q
Interior unit plan, electricity price is denoted as B1 at this time, and unit plan makes operation and the product of spare maximum capacity and cycle T be greater than power purchase
Measure the sum of Q and the electricity Q ' that meets an urgent need；
B) user's meter persistence forecasting electricity consumption in cycle T, and according to real-time electricity consumption, prediction electricity consumption and purchase of electricity q, it is real
Shi Xiangqu clearing device reports purchase of electricity qb or electricity sales amount qs, and electricity price is calculated as B2, and B2 > B1 at this time；
B) if the purchase of electricity qb that user's meter reports in cycle T continues the △ t time and do not strike a bargain, device is settled accounts by area with electricity price B3
Electricity is purchased to generating set control centre, increasing purchase electricity is provided by the corresponding unit plan of emergency electricity Q '；
D) after cycle T, if area's clearing device applies to purchase electricity Q and has a surplus electricity △ Q, machine caused by power plant is deducted because of surplus
After the cost of group plan, by surplus electricity △ Q in terms of electricity price B0, and refund being carried out to area's clearing device, refund volume is △ Q × B0,
And back zone clearing device is each there are the user of surplus electricity △ q progress refund, refund volume is △ q × B0；
E) circulation executes step A-D, completes daily scheduling.
2. the more electricity prices of a kind of power grid according to claim 1 are measured and scheduling system, which is characterized in that
Cost caused by the electricity price B1 executes unit plan according to power plant in cycle T is determining, specifically:Wherein, ρwFor the target electricity price of Hydropower Unit, PwIt is whole Hydropower Units in cycle T
Interior plan mean power, ρrFor the target electricity price of wind, photoelectricity unit, PrPlan mean power in cycle T for wind, photoelectricity unit,
ρfFor the target electricity price of fired power generating unit, PfPlan mean power in cycle T for fired power generating unit, P is that generating set is flat in cycle T
The summation of equal power, the cost contain the target profit of unit quantity of electricity.
3. the more electricity prices of a kind of power grid according to claim 1 or 2 are measured and scheduling system, which is characterized in that
The method that the meter of user reports purchase of electricity q to area's clearing device according to user's history same period electricity consumption in step A, including with
Lower step:
A1 it) is found in the history electricity consumption date and had undergone cycle T the most similar n electricity consumption day with the same day；
A2) electricity consumption day that step A1 is obtained to n is used as after the electricity consumption in next cycle T is weighted and averaged reports power purchase
Measure q, wherein weight is distributed according to similarity.
4. the more electricity prices of a kind of power grid according to claim 1 or 2 are measured and scheduling system, which is characterized in that
The meter rolling forecast user power consumption w of user in step Bi∈FMethod the following steps are included:
B11) at the time of terminating remaining time t ' apart from current period t, the user power utilization function recorded in current period is obtained
Rate real-time curve；
B12) the user power utilization power real-time curve obtained with step-length △ t partiting step B11 counts the maximum of the power in step-length
The quantity m of step-length △ t of the changing value p greater than threshold value △ p enters step B13 if m is greater than threshold value M, conversely, with current week
User power consumption w of the electricity consumption of phase t as rest period t in cycle Ti∈F；
B13) obtain history electricity consumption day with period t to be predicted with the electricity consumption W of periodi, i ∈ E, E be history electricity consumption day with to pre-
The period that period t is surveyed with the period gathers, and establishes wi∈EFitting function, using fitting function acquired results as week remaining in cycle T
The user power consumption w of phase ti∈F, and report purchase of electricity qb or electricity sales amount qs to area's clearing device accordingly.
5. the more electricity prices of a kind of power grid according to claim 3 are measured and scheduling system, which is characterized in that
The meter rolling forecast user power consumption w of user in step Bi∈FMethod the following steps are included:
B11) at the time of terminating remaining time t ' apart from current period t, the user power utilization function recorded in current period is obtained
Rate real-time curve；
B12) the user power utilization power real-time curve obtained with step-length △ t partiting step B11 counts the maximum of the power in step-length
The quantity m of step-length △ t of the changing value p greater than threshold value △ p enters step B13 if m is greater than threshold value M, conversely, with current week
User power consumption w of the electricity consumption of phase t as rest period t in cycle Ti∈F；
B13) obtain history electricity consumption day with period t to be predicted with the electricity consumption W of periodi, i ∈ E, E be history electricity consumption day with to pre-
The period that period t is surveyed with the period gathers, and establishes Wi∈EFitting function, using fitting function acquired results as week remaining in cycle T
The user power consumption w of phase ti∈F, and report purchase of electricity qb or electricity sales amount qs to area's clearing device accordingly.
6. the more electricity prices of a kind of power grid according to claim 1 or 2 are measured and scheduling system, which is characterized in that
User's meter starts the method that the area Qian Xiang clearing device reports purchase of electricity qb or electricity sales amount qs in each period t are as follows:
B21) user's meter is that each user reserves minimum electricity q0；
B22 some fixed time before) each period t starts, in user's meter predetermined period T in the remaining time user use
Electricity ∑i∈Fwi；
B23) if the remaining purchase of electricity of user subtracts ∑i∈FwiQ0 will be less than, then user's meter reports purchase of electricity qb, if remaining purchase
Electricity will be greater than 2*q0, then reports electricity sales amount qs, after the purchase of electricity qb of reporting of user or electricity sales amount qs successful matching, tie in real time
It calculates.
7. the more electricity prices of a kind of power grid according to claim 3 are measured and scheduling system, which is characterized in that
User's meter starts the method that the area Qian Xiang clearing device reports purchase of electricity qb or electricity sales amount qs in each period t are as follows:
B21) user's meter is that each user reserves minimum electricity q0；
B22 some fixed time before) each period t starts, in user's meter predetermined period T in the remaining time user use
Electricity ∑i∈Fwi；
B23) if the remaining purchase of electricity of user subtracts ∑i∈FwiQ0 will be less than, then user's meter reports purchase of electricity qb, if remaining purchase
Electricity will be greater than 2*q0, then reports electricity sales amount qs, after the purchase of electricity qb of reporting of user or electricity sales amount qs successful matching, tie in real time
It calculates.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111275533A (en) * | 2020-02-21 | 2020-06-12 | 山东电力交易中心有限公司 | Electric power market trading method and system |
| CN111813832A (en) * | 2020-07-10 | 2020-10-23 | 广东电网有限责任公司计量中心 | Power data analysis method and device, electronic equipment and storage medium |
| CN112381433A (en) * | 2020-11-20 | 2021-02-19 | 昆明电力交易中心有限责任公司 | Practical electric quantity data processing method for spot market settlement |
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| CN112381433B (en) * | 2020-11-20 | 2023-08-11 | 昆明电力交易中心有限责任公司 | Electric quantity data processing method for spot market settlement |
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