CЭС Акыртобе Солар

CЭС Акыртобе Солар2019-07-18T09:01:26+00:00

Project Description

19 MW DC Akyrtobe Solar Project
Renewable energy project ready for autumn auctions

LocationSoghetti village, 40 East of Taraz, Zhambyl Region, South Kazakhstan
Land50 hectare plot of land secured under 49 years lease
Power Capacity19 000 000 W DC
Grid ConnectionIt is planned to connect the SPP Akyrtobe Solar according to the tap-off scheme from the 110 kV overhead line ZhGRES-Akyr Tube (L-138) with the construction of:
• single-circuit HVL 110 kV by AC-120 wire with a length of 0.05 km;
• SS 110/10 kV according to the typical scheme 110-3Н "block, line transformer with a switch", with the installation of one 110/10 kV transformer with a capacity of 25 MVA.
Technical conditions could be seen here>>>
Solar Technology250 Wp multi-crystalline silicon modules on fixed support structures
Performance Ratio82.6%
Production Yield1495 kWh/kWp (independent internet resource assessment, simulated by PVSyst, P50)
Electricity Generation28 400 000 kWh (Year 1)
PPAShould be acquired through autumn auctions. The tariff won at auctions will be guaranteed through 15 year PPA with Renewable Energy Financial Settlement Centre. Wholly-owned subsidiary of national state-owned grid operator KEGOC
PPA Tariff at auctionsStarting at 34.61 tenge/kWh excluding VAT
RevenuesTo be calculated with the results of the tariff won at auctions
Investment~ 16.7 Mil US dollars plus financing costs
Project IRRShall be calculated applying different tariff scenarios starting at 34,61 kzt/kWh
Project SPV CompanyAkyrtobe Solar LLP - dedicated SPV registered in Kazakhstan and 100% Private sector
Project StatusReady for autumn auctions.
Technical conditions could be seen here>>>

Project location

Soghetti in Zhambyl region, South Kazakhstan. 40 km East of Taraz
50 hectares good quality land. Secured by long-term lease

Attraction of the project

Attraction of our Akyrtobe solar project
— Our Akyrtobe project represents an excellent opportunity to

  • Invest in Kazakhstan, a strong and stable Central Asian economy.
  • Promote and finance sustainable development infrastructure for Kazakhstan.
  • Develop and diversify the Kazakhstan economy through renewable energy.

— Opportunity to promote a Flagship project and blueprint for Solar energy in Kazakhstan.
— Opportunity to invest in and showcase a real live solar project after Kazakhstan’s Expo-2017.
— Strong investment returns through the life of the PPA, and thereafter with a fully-amortized asset.
— Sponsored by Developer’s dedicated project company, Akyrtobe Solar, registered in Kazakhstan.

Strengths of our Akyrtobe solar project
— Our project has the firm commitment and support of the public administrations in Kazakhstan.
— Good climatic conditions in the Akyrtobe area for high plant performance.
— Extremely low uncertainty on electricity generation assumptions thanks to independent reports.
— Expert design and engineering by Developer’s internationally recognized team of solar experts.
— Low risk operation and production through the use of proven solar technology and tier 1 suppliers.
— Low-risk simple construction and short construction period.
— Secured grid connection, already approved by REC, KEGOC and Ministry of Energy.
— Ready-to-build in 2019.

Project schedule and timelines

According to the plan, the project could be completed and given into commissioning in 2019 subject to the following deadlines:

√ Autumn auctions → to be held on 17.10.2018, registration period 01.08.2018-09.10.2018
√ The signing of the PPA → in 60 days after winning the auctions
√ Land allocation → registered in name of SPV (land lease 49 years), the status of the land plot to be changed in 2 months after winning the auctions
√ Obtaining technical conditions for connection to the power grid → June 2018 (completed)
√ Detailed design and cost estimates → November 2018 — February 2019
√ Private expertise approval (for solar park side) → 20 calendar days, after submitting
√ State expertise approval (for grid connection part) → 45 business days, after submitting
√ Notification on start of construction works (Construction permit) → 3 days after receiving the expertise approval
√ The beginning of construction → if all overgiven points are successfully realized 2nd quarter of 2019
√ Commissioning of a 19 MW SES – 4th quarter 2019

Please see the development chart

Site photos

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[:ru]APPROVED by

____________A.B. Dzharbulov                                         

Director General,                                                             

ZhES Ltd.

 

 

TECHNICAL CONDITIONS

for Connection of a Solar Electric Plant (SEP) Owned by Akyrtobe Solar Ltd.

Being Designed and Located at the Territory of Kokaryk, T.Ryskulovsky District,

Zhambyl Oblast

 

Output Capacity - 19 MW

  1. Primary Scheme:

1.1. OHL 110 kV

1.1.1. To construct 110 kV OHL from the substation of Akyrtobe Solar SEP to the spur line of 110 kV OHL L-138 ZhGRES - Akyrtyube substation (support for OHL connection point is to be specified in the Project and agreed with ZhES Ltd.).

1.1.2. Technical specifications of 110 kV OHL are to be specified in the Project.

1.2. Akyrtobe Solar SEP 110 kV Substation

1.2.1. To construct a typical 110-3H circuit Akyrtobe Solar 110 kV substation with a 110 kV step-up transformer with switching devices and relay protection and automatic equipment at a specially designated site.

  1. 3 Akyrtyube Substation:

1.3.1. To replace a breaker+short circuitor with a 110 kV SF 6 circuit-breaker on the T-1 side.

1.3.2. To install a current transformer on the T-1 side.

1.3.3. To install a disconnecting switch on the T-1 side.

1.3.4. To install a current transformer on the L-138 side.

1.3.5. Choice of equipment for the Akyrtobe Solar SEP 110 kV substation being designed, ZhGRES and Zapchast substation is to be agreed with ZhES Ltd.

  1. Relay Protection and Automatic Equipment:

2.1 Akyrtobe Solar SEP 110 kV Substation

2.1.1 To protect 110 kV transformer and 110 kV OHL provisions are to be made for DC control powered digital relay protection and automatic devices.  Specifications of devices, communication protocols, and communication interface are to comply with the International Electrotechnical Commission standards and standards of the Republic of Kazakhstan. The protection should guarantee reliability, selectivity and rapid response imposed by the Electrical Installation Standard of the Republic of Kazakhstan. The warranty period for security modules should be not less than a year since commissioning.

2.1.2 The protection devices being installed are to comply with all the standards for electromagnetic compatibility.

2.1.3 The 110 kV transformer tripping is to comply with the manufacturer’s operating instructions.

2.1.4 To protect the 110 kV transmission line on the side of Akyrtobe Solar SEP Substation a provision should be made for a separate protection module containing:

- Stepped directional current protection against phase-to-phase faults

- Stepped directional zero-sequence protection against short-circuit to earth

- Circuit breaker failure protection device

- Device for automatic restart of the 110 kV switch with synchronism control and presence (absence) of voltage on the line.

- Transmit earth fault protection and breaker fail protection signals to ZhGRES and Akyr-Tyube substation for 110 kV circuit breaker opening.

2.1.5 Cells for on-site 10-35 kV mains are to be equipped with arc barriers.

2.1.3. Choice of equipment for the Akyrtobe Solar SEP 110 kV substation being designed, ZhGRES and Akyr-Tyube substation is to be agreed with ZhES Ltd. and JSC ZhGRES.

  1. Dispatcher Operation Control System:

3.1 Provide for the organization of dispatch communication channels with SES Akyrtobe Solar at the ACC branch of KEGOC Southern MES branch along two independent paths.

3.2 To provide for the transfer of data from the automated system for commercial accounting of electricity from the SES Akyrtobe Solar to the NDC SO (Astana) via two independent paths via the Internet.

  1. To fulfill the requirements of the Grid Operator (KEGOC JSC) to ensure the integration of the SEP into the national electric grid in accordance with Appendix 1.
  2. The validity of the Technical Conditions is 3 years.
  3. Technical conditions No. 819-27-18 dated June 29, 2018 – canceled.

 

 

Head of GPTU:                                                       Ye.U. Urazaliyev

                             Tel.: 90-11-34

 

 

Note: When fulfilling the technical conditions, it is necessary to comply with the requirements of Paragraphs 2 and 3 of The Rules on Electric Power Usage approved by Order No. 143 of the Minister of Energy of the Republic of Kazakhstan dated 25.02.2015.

 

 

 

 

 

Agreed by:

 

Deputy Director General

of Technical Issues of Production Support Units

ZhES Ltd.

_________________ D.A. Aralbayev

  

 

 

of Technical Issues of Distribution Zones

ZhES Ltd.

_______________ T.U. Serzhanov           

 

 

 

 

Appendix 1.

 

Requirements of the Grid Operator for SEP Integration into the National Grid

  1. With regard to ensuring the sustainable operation of the solar energy plant (hereinafter - SEP):
  2. 1 The SEP is to be sustainably operated (without automatic disconnection from the grid) in the event of a frequency deviation from the nominal value in the grid within the frequency ranges and time periods specified in Table 1.

Table1.

Frequency Range, Hz Minimum Operating Time
45.0 1 sec
46.0 2 sec
47-49 120 minutes
49-51 not limited
51-51.5 90 minutes

 

  1. 2 The SEP is to be equipped with automatic control of active power generation ensuring participation in the primary frequency control (in case of frequency deviation in the grid, both for increase and decrease relative to the nominal value). The dead band of automation is 0.15 Hz; the frequency droop is to be within the range of 4.5-6.0%.
  2. 3 The SEP is to be equipped with automation enabling control of the rate of generated active power ascension.
  3. 4 The SEP is to remain connected to the grid in case of line (phase-to-phase) voltage drops at the grid connection point caused by asynchronous mode in the adjacent grid or by close short circuits (symmetrical or asymmetrical). At the same time, the corresponding required conditions for sustainable operation of the SEP are determined by the "voltage-time" characteristic indicated in Fig.1

Figure1.

Notes to Fig.1:

"A" area - the SEP is to remain connected to the grid and function steadily;

"B" area - the SEP is to remain connected to the grid and provide maximum voltage support by generating a controlled volume of reactive power;

"C" area - the SEP is allowed to be disconnected from the grid.

 

  1. 5 The SEP is supposed to be equipped with automation system that provides control of reactive power generation:
  2. a) in the voltage control mode;
  3. b) in the reactive power control mode;
  4. c) in the power factor control mode.

Reasonability of any of these specified control modes will be decided by the Grid Operator. Upon commissioning the plant is to operate in voltage control mode with a preset value of 115 kV.

  1. 6   The SEP is to provide a range of reactive power control within the limits indicated in Figures 2 and 3. When the voltage at the connection point decreases (or increases) beyond the limits indicated in Fig. 3, the SEP operation is to be ensured in the mode of maximum generation (or maximum consumption) of reactive power.

 

Figure 2. The dependence of the SEP reactive power adjustment range on its actual generation.

Figure 3. The dependence of the SEP reactive power adjustment range on the actual voltage at the connection point to the 115 kV grid.

 

  1. 7 The SEP is to be equipped with an automatic control system that enables limiting the value of the SEP generated active power upon a signal from a dispatcher or by the process control system.

The SEP is to enable reducing the generated active power to 20% of the rated power with the rate of change of at least 20% Rn per minute.

  1. 8 Compliance with the requirements for regulation of active and reactive power are to be confirmed by field tests during the commissioning phase based on a separate test program submitted by the manufacturer of the SEP equipment and approved by the Grid Operator.
  2. 9 At the design stage the need to equip the SEP with power storage devices is to be considered. The power and capacity of energy storage devices are to be considered and justified in the project due to ensuring compliance with the SEP daily power generation schedule with an allowable deviation of not more than +/- 10%
  3. 10 Submit to KEGOC at the stage of detailed engineering:

- SEP calculation model for modeling in modes calculation software (PSSE, DigSILENT).

- detailed SEP technical characteristics in accordance with Clause 14, Annex 3 of the National Grid Rules of the Republic of Kazakhstan approved by Order of the Minister of Energy dated December 18, 2014 No. 210 (hereinafter - NGR): SEP technical characteristics including detailed technical data on the SEP (power curves, efficiency and energy depending on the sun - in tabular and graphical forms - and other technical characteristics), data on the SEP configuration, data for the station modeling in software for calculating the modes of the electrical grid, it is required to specify operating ranges for frequency, voltage, ambient temperature, the dependence of the ability to regulate reactive power on frequency and voltage as well as on other technical characteristics.

- justifying documents (the certificate of the SEP equipment manufacturer or by an international certification organization) confirming that the selected SEP equipment ensures meeting the Grid Operator's requirements regarding the sustainable operation of the SEP.

 

 

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