CN108229764A - Simulating analysis and device are controlled for the coordination of polymorphic type power supply cooperation - Google Patents

Simulating analysis and device are controlled for the coordination of polymorphic type power supply cooperation Download PDF

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CN108229764A
CN108229764A CN201611125869.4A CN201611125869A CN108229764A CN 108229764 A CN108229764 A CN 108229764A CN 201611125869 A CN201611125869 A CN 201611125869A CN 108229764 A CN108229764 A CN 108229764A
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power supply
base
supply base
grid
polymorphic type
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CN108229764B (en
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丁剑
吕熹
梅文明
张光亚
赵莉莉
牛栓宝
柯贤波
霍超
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STATE GRID NORTHWEST CHINA GRID Co Ltd
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Shuozhou Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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STATE GRID NORTHWEST CHINA GRID Co Ltd
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Shuozhou Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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Abstract

The present invention provides a kind of coordinations for polymorphic type power supply cooperation to control simulating analysis, and the method includes defining polymorphic type power supply base set；Define the object function and relational matrix between polymorphic type power supply base；Power grid security verifies；Determine the power supply base changing factor of influence polymorphic type power supply cooperation；According to the threshold interval of the power supply base off-grid volume change of setting, Coordinated Control Scheme is determined.Technical solution provided by the invention can comprehensively reflect the relationship that influences each other between each power supply base, disclose the potential problems during operation of power networks, according to off-grid capacity threshold section, effectively determine to reduce the control measure of off-grid capacity or evade the Parameters variation for the increase off-grid capacity for reducing off-grid capacity.

Description

Simulating analysis and device are controlled for the coordination of polymorphic type power supply cooperation
Technical field
The invention belongs to power system security and stablize field, and in particular to a kind of for polymorphic type power supply cooperation Coordinate control simulating analysis and device.
Background technology
In recent years, gradually reducing with fossil energy, the continuous improvement of environmental consciousness are clear headed by wind-powered electricity generation and photovoltaic Clean energy source utilizing electricity generating techn is developed rapidly, and wind-powered electricity generation and photovoltaic permeability rise year by year, and some areas energy resource structure produces Larger variation.For example, the scale installed 1 year of 2 some local wind power bases more than 12,000,000 kilowatts, solar power generation it is near 6000000 kilowatts.It is contemplated that installed capacity of wind-driven power is bound to further increase.
After extensive clean energy resource is grid-connected, partial electric grid forms the field of the polymorphic types power supply cooperations such as wind, fire, light, water Scape, when clean energy resource permeability rises, negative effect that all kinds of power supply characteristic differences generate power network safety operation Increase therewith.The cleaner power sources such as wind-powered electricity generation and photovoltaic have the characteristics that fluctuation, randomness and intermittent, when cleaner power sources contribute with When load variations are inconsistent, load peak-valley difference may be made to become larger, increase the scheduling pressure of system operation；The failure of cleaner power sources is worn More property difference also brings very big uncertainty to the safety and stability of power grid.The normal power supplies such as thermoelectricity and water power are to adjusting load Peak-valley difference and promotion power network safety operation have great role.It is limited by conditions such as boiler, steam turbine minimum technology outputs System, fired power generating unit adjustable range are smaller；And the equipment such as boiler, steam turbine governing speed is also relatively slow, and general condensing-type unit is every The 1%~2% of minute only adjustable installed capacity.And water power is a kind of cheap, clean primary energy, operating cost is low, Environmental pollution is small, and adjusting range is big, regulates the speed fast, therefore under the premise of ensureing to make full use of, should transport power station as possible The capable peak location in load provides the services such as peak regulation, frequency modulation, emergency duty for system.
Fluctuation, randomness and the intermittent feature of clean energy resource bring huge pressure to power network safety operation Power, also the coordination control to polymorphic type power supply stable state, transient state, Protection parameters bring great challenge.It is extensive clear to ensure The clean energy it is grid-connected after power grid can safe and stable and efficient operation, prevent stability disruption and large area under related accidents from stopping Electricity needs deeply and carefully to carry out correlative study work, grasps the safety and stability characteristic of the grid-connected rear power grid of extensive clean energy resource, Again from the relevant suggested measures of power generating source angle research.Therefore it provides a kind of association suitable for polymorphic type power supply cooperation Regulation and control simulating analysis processed is horizontal to promote the safety and stability of power grid.
Invention content
The present invention provides a kind of coordination for polymorphic type power supply cooperation and controls simulating analysis, the method packet Include following steps：
Step 1：Define polymorphic type power supply base set；
Step 2：Define the object function and relational matrix between polymorphic type power supply base；
Step 3：Electric network security verifies；
Step 4：Determine the power supply base changing factor of influence polymorphic type power supply cooperation；
Step 5：According to the threshold interval of the power supply base off-grid volume change of setting, Coordinated Control Scheme is determined.
The step 1 defines polymorphic type power supply base set and includes：
According to the different electrical power characteristic of normal power supplies and cleaner power sources, all power supplys of partial electric grid are divided into m routine Power supply base and n cleaner power sources base, polymorphic type power supply base set G are shown below：
G={ g1,…,gm,gm+1,…,gm+n}
Wherein, subset { g1,…,gmRepresent the set in normal power supplies bases, subset { gm+1,…,gm+nRepresent cleaner power sources The set in base.
The step 2 includes：
For the relationship between each power supply base in reflection set G, interactional object function between each power supply base is defined：
yij=Fj(fi,si,ti,pi)
Wherein, yijRepresent power supply base g in set GjBy power supply base giChanging factor influence off-grid capacity, fi For power supply base giInternal or its neighbouring line fault, si、ti、piRespectively power supply base giSteady-state Parameters, transient state parameter, protect Protect parameter.
Relational matrix Y between polymorphic type power supply base is shown below：
Wherein, Y1Represent the relationship that influences each other between m normal power supplies base, Y2Represent m normal power supplies base to n The influence relationship in cleaner power sources base, Y3Represent n cleaner power sources base to the influence relationship in m normal power supplies base, Y4It represents The relationship that influences each other between n cleaner power sources base, each element represents variable in Y.
The step 3 power grid security verification includes：
In the case that power supply base stable state, transient state, Protection parameters are constant, to inside each power supply base or its neighbouring circuit into Row Fault traversal records each power supply base off-grid capacity, forms polymorphic type power supply base off-grid capacity matrix of initial value A：
Wherein, A1Interactional off-grid capacity between m normal power supplies base of expression, A2Represent m normal power supplies base shadow Ring the off-grid capacity in n cleaner power sources base, A3Represent that n cleaner power sources base influences the off-grid appearance in m normal power supplies base Amount, A4Represent interactional off-grid capacity between n cleaner power sources base, each element represents constant in A.Due to conventional electricity Source is not easy off-grid in power grid security checking procedure, therefore A1And A3In element be essentially 0.
The step 4 includes：
Each variable y in relational matrix Y between polymorphic type power supply baseijIt is traversed, and is carried out by subscript line number i Taxonomic discussion, if i<M+1 is then influence of the normal power supplies base changing factor to polymorphic type power supply cooperation, is otherwise clear Influence of the clean power supply base changing factor to polymorphic type power supply cooperation.
Power supply base changing factor can influence the safe and stable operation in power supply base, increase or decrease the off-grid in power supply base Capacity, and then influence the safe and stable operation of power grid.Cleaner power sources base more holds because it is by natural resources and self-condition restriction It is vulnerable to influence.According to influence of the power supply base changing factor to power supply base off-grid capacity, it may be determined that reduce off-grid capacity Control measure and avoid increase off-grid capacity parameter adjustment.
The step 5 includes：
Steady-state Parameters s in object function between analysis polymorphic type power supply base on the basis of power grid security verificationiChange Change to yijInfluence, setting power supply base Steady-state Parameters siThreshold values the section [- c of the lower off-grid volume change of variations1,cs2], if- cs1≤yij-aij≤cs2, then stable state control measure are not taken；If yij-aij≤-cs1, then the stable state control for reducing off-grid capacity is formed Measure processed；If yij-aij≥cs2, then evade the Steady-state Parameters adjustment for increasing off-grid capacity；Wherein, yijFor power supply base in set G gjBy power supply base giChanging factor influence off-grid capacity, aijFor power supply base g in set GjBy power supply base gi's The off-grid capacity initial value that changing factor influences.
Above-mentioned threshold values section can be set by operational management personnel according to power grid actual conditions.
The step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle transient state parameter tiVariation to yijInfluence, setting Threshold values the section [- c of the lower off-grid volume change of power supply base variationt1,ct2], if-ct1≤yij-aij≤ct2, then transient state is not taken Control measure；If yij-aij≤-ct1, then the transient state control measure for reducing off-grid capacity are formed；If yij-aij≥ct2, then evade increasing Add the transient state parameter adjustment of off-grid capacity；Wherein, aijFor power supply base off-grid capacity initial value.
Above-mentioned threshold values section can be set by operational management personnel according to power grid actual conditions.
The step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle Protection parameters piVariation to yijInfluence, setting Power supply base Protection parameters piThreshold values the section [- c of the lower off-grid volume change of variationp1,cp2], if-cp1≤yij-aij≤cp2, then Stable state control measure are not taken；If yij-aij≤-cp1, then the protection control measure for reducing off-grid capacity are formed；If yij-aij≥ cp2, then evade the Protection parameters adjustment of increase off-grid capacity wherein；aijFor power supply base off-grid capacity initial value.
Above-mentioned threshold values section can be set by operational management personnel according to power grid actual conditions.
The Steady-state Parameters in normal power supplies base include thermoelectricity start-up mode, spinning reserve capacity, and transient state parameter includes thermoelectricity Excitation parameter, Protection parameters include thermoelectricity OPC parameters；
The Steady-state Parameters in cleaner power sources base include the fluctuation that goes out of wind-powered electricity generation, and transient state parameter includes wind-powered electricity generation reactive-load compensation, protects Shield parameter passes through protection including wind-powered electricity generation high-low voltage.
A kind of coordination for polymorphic type power supply cooperation controls simulation analysis device, and described device includes：
Collection modules：Define polymorphic type power supply base set；
Computing module：For calculating the relational matrix between polymorphic type power supply base；
Correction verification module：It is verified for electric network security；
Changing factor determining module：For determining to influence the power supply base changing factor of polymorphic type power supply cooperation；
Comparison module：According to yij-aijThe comparison of the threshold interval of power supply base off-grid volume change with setting, determines Coordinated Control Scheme, wherein yijPower supply base g in gathering for power supply basejBy power supply base giChanging factor influence it is de- Network capacity amount, aijFor power supply base gjBy power supply base giChanging factor influence off-grid capacity initial value.
Compared with the latest prior art, technical solution provided by the invention has following excellent effect：
A kind of coordination for polymorphic type power supply cooperation provided by the invention controls simulating analysis, in power grid reality On the basis of border and emulation data, cleaner power sources and normal power supplies characteristic are considered, effectively assess comprehensively between each power supply base The relationship that influences each other, find operation of power networks during potential problems, be actual electric network polymorphic type power supply cooperation association Regulation and control system provide a kind of analysis process of specific operability for standardizing and combining closely with power grid actual conditions and demand and Method.
The present invention effectively determines to reduce the control measure of off-grid capacity or evade increase to take off according to off-grid capacity threshold section The Parameters variation of network capacity amount.
Description of the drawings
Fig. 1 is a kind of flow chart of coordination control simulating analysis for polymorphic type power supply cooperation of the present invention；
Fig. 2 is specific embodiment of the invention attached drawing.
Specific embodiment
Stream for a kind of coordination control simulating analysis for polymorphic type power supply cooperation of the present invention as shown in Figure 1 Cheng Tu, described method includes following steps：
Step 1：Define polymorphic type power supply base set；
Step 2：Define the object function and relational matrix between polymorphic type power supply base；
Step 3：Electric network security verifies；
Step 4：Determine the power supply base changing factor of influence polymorphic type power supply cooperation；
Step 5：The threshold interval of power supply base off-grid volume change is set, determines Coordinated Control Scheme.
Below in conjunction with the accompanying drawings 2, the present invention will be further described in detail：
The step 1 defines polymorphic type power supply base set and includes：
According to the different electrical power characteristic of normal power supplies and cleaner power sources, all power supplys of partial electric grid are divided into m routine Power supply base and n cleaner power sources base, represent as follows with set G：
G={ g1,…,gm,gm+1,…,gm+n}
Wherein, subset { g1,…,gmRepresent m normal power supplies base, subset { gm+1,…,gm+nRepresent n cleaner power sources Base.
The step 2 includes：
For the relationship between each power supply base in reflection set G, interactional object function between each power supply base is defined：
yij=Fj(fi,si,ti,pi)
Wherein, yijRepresent power supply base g in set GjBy power supply base giChanging factor influence off-grid capacity, fi For power supply base giInternal or its neighbouring line fault, si、ti、piRespectively power supply base giSteady-state Parameters, transient state parameter, protect Protect parameter.
Relational matrix Y between polymorphic type power supply base is shown below：
Wherein, Y1Represent the relationship that influences each other between m normal power supplies base, Y2Represent m normal power supplies base to n The influence relationship in cleaner power sources base, Y3Represent n cleaner power sources base to the influence relationship in m normal power supplies base, Y4It represents The relationship that influences each other between n cleaner power sources base, each element represents variable in Y.
The step 3 power grid security verification includes：
In the case where each power supply base stable state, transient state, Protection parameters are constant, to each power supply base inside or its neighbouring line Road carries out Fault traversal, records each power supply base off-grid capacity, forms polymorphic type power supply base off-grid capacity matrix of initial value A：
Wherein, A1Interactional off-grid capacity between m normal power supplies base of expression, A2Represent m normal power supplies base shadow Ring the off-grid capacity in n cleaner power sources base, A3Represent that n cleaner power sources base influences the off-grid appearance in m normal power supplies base Amount, A4Represent interactional off-grid capacity between n cleaner power sources base, each element represents constant in A.And due to routine Power supply is not easy off-grid in power grid security checking procedure, therefore A1And A3In element be essentially 0.
The step 4 includes：
Each variable y in relational matrix Y between polymorphic type power supply baseijIt is traversed, and is carried out by subscript line number i Taxonomic discussion, if i<M+1 is then influence of the normal power supplies base changing factor to polymorphic type power supply cooperation, is otherwise clear Influence of the clean power supply base changing factor to polymorphic type power supply cooperation.
Power supply base changing factor can influence the safe and stable operation in power supply base, increase or decrease the off-grid in power supply base Capacity, and then influence the safe and stable operation of power grid.Cleaner power sources base more holds because it is by natural resources and self-condition restriction It is vulnerable to influence.According to influence of the power supply base changing factor to power supply base off-grid capacity, it may be determined that reduce off-grid capacity Control measure and avoid increase off-grid capacity parameter adjustment.
The step 5 includes：
Steady-state Parameters s in object function between analysis polymorphic type power supply base on the basis of power grid security verificationiChange Change to yijInfluence, setting power supply base Steady-state Parameters siThreshold values the section [- c of the lower off-grid volume change of variations1,cs2], if- cs1≤yij-aij≤cs2, then stable state control measure are not taken；If yij-aij≤-cs1, then the stable state control for reducing off-grid capacity is formed Measure processed；If yij-aij≥cs2, then evade the Steady-state Parameters adjustment for increasing off-grid capacity；Wherein, yijFor power supply base in set G gjBy power supply base giChanging factor influence off-grid capacity, aijFor power supply base g in set GjBy power supply base gi's The off-grid capacity initial value that changing factor influences.Above-mentioned threshold values section can be set by operational management personnel according to power grid actual conditions It is fixed.
The step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle transient state parameter tiVariation to yijInfluence, setting Threshold values the section [- c of the lower off-grid volume change of power supply base variationt1,ct2], if-ct1≤yij-aij≤ct2, then transient state is not taken Control measure；If yij-aij≤-ct1, then the transient state control measure for reducing off-grid capacity are formed；If yij-aij≥ct2, then evade increasing Add the transient state parameter adjustment of off-grid capacity；Wherein, aijFor power supply base off-grid capacity initial value.Above-mentioned threshold values section can be managed by operation Reason personnel are set according to power grid actual conditions.
The step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle Protection parameters piVariation to yijInfluence, setting Power supply base Protection parameters piThreshold values the section [- c of the lower off-grid volume change of variationp1,cp2], if-cp1≤yij-aij≤cp2, then Stable state control measure are not taken；If yij-aij≤-cp1, then the protection control measure for reducing off-grid capacity are formed；If yij-aij≥ cp2, then evade the Protection parameters adjustment of increase off-grid capacity wherein；aijFor power supply base off-grid capacity initial value.Above-mentioned threshold values area Between can be set by operational management personnel according to power grid actual conditions.
The Steady-state Parameters in normal power supplies base include thermoelectricity start-up mode, spinning reserve capacity, and transient state parameter includes thermoelectricity Excitation parameter, Protection parameters include thermoelectricity OPC parameters；
The Steady-state Parameters in cleaner power sources base include the fluctuation that goes out of wind-powered electricity generation, and transient state parameter includes wind-powered electricity generation reactive-load compensation, protects Shield parameter passes through protection including wind-powered electricity generation high-low voltage.
Finally it should be noted that：Above example is merely to illustrate technical scheme of the present invention rather than to its protection domain Limitation, although the application is described in detail with reference to above-described embodiment, those of ordinary skill in the art should Understand：Those skilled in the art read the specific embodiment of application can be still carried out after the application various changes, modification or Person's equivalent replacement, but these changes, modification or equivalent replacement, are applying within pending claims.

Claims (11)

1. a kind of coordination for polymorphic type power supply cooperation controls simulating analysis, which is characterized in that the method packet Include following steps：
Step 1：Define polymorphic type power supply base set；
Step 2：Define the object function and relational matrix between polymorphic type power supply base；
Step 3：Electric network security verifies；
Step 4：Determine the power supply base changing factor of influence polymorphic type power supply cooperation；
Step 5：According to the threshold interval of the power supply base off-grid volume change of setting, Coordinated Control Scheme is determined.
2. simulating analysis as described in claim 1, which is characterized in that the step 1 defines polymorphic type power supply base collection Conjunction includes：
The polymorphic type power supply base set G is shown below：
G={ g1,…,gm,gm+1,…,gm+n}
Wherein, subset { g1,…,gmRepresent the set in normal power supplies bases, subset { gm+1,…,gm+nRepresent cleaner power sources base Set.
3. simulating analysis as described in claim 1, which is characterized in that the step 2 includes：
For the relationship between each power supply base in reflection set G, interactional object function between each power supply base is defined：
yij=Fj(fi,si,ti,pi)
Wherein, yijRepresent power supply base g in set GjBy power supply base giChanging factor influence off-grid capacity, fiFor electricity Source base giInternal or its neighbouring line fault, si、ti、piRespectively power supply base giSteady-state Parameters, transient state parameter, protection ginseng Number.
4. simulating analysis as claimed in claim 3, which is characterized in that the relational matrix Y between polymorphic type power supply base is such as Shown in following formula：
Wherein, Y1Represent the relationship that influences each other between m normal power supplies base, Y2Represent that m normal power supplies base cleans n The influence relationship in power supply base, Y3Represent n cleaner power sources base to the influence relationship in m normal power supplies base, Y4Represent n The relationship that influences each other between cleaner power sources base, each element represents variable in Y.
5. simulating analysis as described in claim 1, which is characterized in that the step 3 power grid security verification includes：
In the case that power supply base stable state, transient state, Protection parameters are constant, event is carried out to each power supply base inside or its neighbouring circuit Barrier traversal, records each power supply base off-grid capacity, forms polymorphic type power supply base off-grid capacity matrix of initial value A：
Wherein, A1Interactional off-grid capacity between m normal power supplies base of expression, A2Represent that m normal power supplies base influences n The off-grid capacity in a cleaner power sources base, A3Represent that n cleaner power sources base influences the off-grid capacity in m normal power supplies base, A4 Represent interactional off-grid capacity between n cleaner power sources base, each element represents constant in A.
6. simulating analysis as described in claim 1, which is characterized in that the step 4 includes：
Each variable y in relational matrix Y between polymorphic type power supply baseijIt is traversed, and is classified by subscript line number i It discusses, if i<M+1 is then influence of the normal power supplies base changing factor to polymorphic type power supply cooperation, is otherwise cleaning electricity Influence of the source base changing factor to polymorphic type power supply cooperation.
7. simulating analysis as described in claim 1, which is characterized in that the step 5 includes：
Steady-state Parameters s in object function between analysis polymorphic type power supply base on the basis of power grid security verificationiVariation pair yijInfluence, setting power supply base Steady-state Parameters siThreshold values the section [- c of the lower off-grid volume change of variations1,cs2], if-cs1≤ yij-aij≤cs2, then stable state control measure are not taken；If yij-aij≤-cs1, then formed reduce off-grid capacity stable state control arrange It applies；If yij-aij≥cs2, then evade the Steady-state Parameters adjustment for increasing off-grid capacity；Wherein, yijFor power supply base g in set GjBy To power supply base giChanging factor influence off-grid capacity, aijFor power supply base g in set GjBy power supply base giVariation The off-grid capacity initial value that factor influences.
8. simulating analysis as described in claim 1, which is characterized in that the step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle transient state parameter tiVariation to yijInfluence, set power supply Threshold values the section [- c of the lower off-grid volume change of base variationt1,ct2], if-ct1≤yij-aij≤ct2, then transient state control is not taken Measure；If yij-aij≤-ct1, then the transient state control measure for reducing off-grid capacity are formed；If yij-aij≥ct2, then it is de- to evade increase The transient state parameter adjustment of network capacity amount；Wherein, aijFor power supply base off-grid capacity initial value.
9. simulating analysis as described in claim 1, which is characterized in that the step 5 includes：
The analysis object function y on the basis of power grid security verificationijMiddle Protection parameters piVariation to yijInfluence, set power supply Base Protection parameters piThreshold values the section [- c of the lower off-grid volume change of variationp1,cp2], if-cp1≤yij-aij≤cp2, then do not adopt Take stable state control measure；If yij-aij≤-cp1, then the protection control measure for reducing off-grid capacity are formed；If yij-aij≥cp2, then Evade the Protection parameters adjustment of increase off-grid capacity wherein；aijFor power supply base off-grid capacity initial value.
10. simulating analysis as claimed in claim 3, which is characterized in that the Steady-state Parameters in normal power supplies base include fire Electric start-up mode, spinning reserve capacity, transient state parameter include thermoelectricity excitation parameter, and Protection parameters include thermoelectricity OPC parameters；
The Steady-state Parameters in cleaner power sources base include the fluctuation that goes out of wind-powered electricity generation, and transient state parameter includes wind-powered electricity generation reactive-load compensation, protection ginseng Number includes wind-powered electricity generation high-low voltage and passes through protection.
11. a kind of coordination for polymorphic type power supply cooperation controls simulation analysis device, which is characterized in that described device packet It includes：
Collection modules：Define polymorphic type power supply base set；
Computing module：For calculating the relational matrix between polymorphic type power supply base；
Correction verification module：It is verified for electric network security；
Changing factor determining module：For determining to influence the power supply base changing factor of polymorphic type power supply cooperation；
Comparison module：According to yij-aijWith the comparison of the threshold interval of power supply base off-grid volume change set, determine to coordinate Control program, wherein yijPower supply base g in gathering for power supply basejBy power supply base giChanging factor influence off-grid hold Amount, aijFor power supply base gjBy power supply base giChanging factor influence off-grid capacity initial value.
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